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+ "substrate-prometheus-endpoint",
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+ "sp-api",
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+ "sp-blockchain",
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+ "sp-keystore",
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+ "substrate-prometheus-endpoint",
+ "thiserror",
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+ "sp-block-builder",
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+ "sc-chain-spec",
+ "sc-client-api",
+ "sc-consensus",
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+ "sc-network-common",
+ "sc-network-gossip",
+ "sc-network-sync",
+ "sc-telemetry",
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+ "sc-client-api",
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+ "sc-consensus-aura",
+ "sc-consensus-babe",
+ "sc-consensus-epochs",
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+ "sc-transaction-pool-api",
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+ "sp-api",
+ "sp-blockchain",
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+ "sp-consensus-aura",
+ "sp-consensus-babe",
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+ "sp-keystore",
+ "sp-runtime",
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+ "thiserror",
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+ "sc-telemetry",
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+ "sp-blockchain",
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+ "log",
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+ "sc-network-sync",
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+ "sp-api",
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+ "substrate-prometheus-endpoint",
+ "thiserror",
+ "tokio",
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+ "wasm-timer",
+ "zeroize",
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+ "sp-runtime",
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+ "sc-network-sync",
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+ "substrate-prometheus-endpoint",
+ "tracing",
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+ "sp-blockchain",
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+ "substrate-prometheus-endpoint",
+ "thiserror",
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+ "tokio-stream",
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+ "substrate-prometheus-endpoint",
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+ "sc-informant",
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+ "sc-network-bitswap",
+ "sc-network-common",
+ "sc-network-light",
+ "sc-network-sync",
+ "sc-network-transactions",
+ "sc-rpc",
+ "sc-rpc-server",
+ "sc-rpc-spec-v2",
+ "sc-sysinfo",
+ "sc-telemetry",
+ "sc-tracing",
+ "sc-transaction-pool",
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+ "substrate-prometheus-endpoint",
+ "tempfile",
+ "thiserror",
+ "tokio",
+ "tracing",
+ "tracing-futures",
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new file mode 100644
index 0000000..ef8b42b
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+
+# Substrate Client
+sc-basic-authorship = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-block-builder = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-chain-spec = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-cli = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sc-client-api = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-client-db = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sc-consensus = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-consensus-aura = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-consensus-grandpa = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-consensus-manual-seal = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-executor = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-keystore = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-network = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-network-common = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-network-sync = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-offchain = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-rpc = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-rpc-api = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-service = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sc-telemetry = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-transaction-pool = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-transaction-pool-api = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sc-utils = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+# Substrate Primitive
+sp-api = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-block-builder = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-blockchain = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sp-consensus = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sp-consensus-aura = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-consensus-grandpa = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-core = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-crypto-hashing = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-database = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sp-externalities = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-genesis-builder = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-inherents = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-io = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-keyring = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+sp-offchain = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-runtime = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-runtime-interface = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-session = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-staking = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-state-machine = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-std = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-storage = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-timestamp = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-transaction-pool = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-version = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+sp-weights = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+# Substrate FRAME
+frame-benchmarking = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+frame-executive = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+frame-support = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+frame-system = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+frame-system-benchmarking = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+frame-system-rpc-runtime-api = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-aura = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-balances = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-grandpa = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-sudo = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-timestamp = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-transaction-payment = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-transaction-payment-rpc = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+pallet-transaction-payment-rpc-runtime-api = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-utility = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-contracts = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-parameters = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-insecure-randomness-collective-flip = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-assets = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-indices = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-multisig = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-node-authorization = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-recovery = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-session = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false, features = ["historical"] }
+pallet-session-benchmarking = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-authorship = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-uniques = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+pallet-im-online = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+#validator-set = { package = 'substrate-validator-set', branch = "master", git = 'https://github.com/gautamdhameja/substrate-validator-set.git', default-features = false }
+substrate-validator-set = { path = "pallets/substrate-validator-set", default-features = false }
+# Substrate Utility
+frame-benchmarking-cli = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+prometheus-endpoint = { package = "substrate-prometheus-endpoint", git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+substrate-build-script-utils = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+substrate-frame-rpc-system = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+substrate-test-runtime-client = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+substrate-wasm-builder = { git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0" }
+
+# XCM
+xcm = { package = "staging-xcm", git = "https://github.com/paritytech/polkadot-sdk", branch = "release-polkadot-v1.9.0", default-features = false }
+
+# Arkworks
+ark-bls12-377 = { version = "0.4.0", default-features = false, features = ["curve"] }
+ark-bls12-381 = { version = "0.4.0", default-features = false, features = ["curve"] }
+ark-bw6-761 = { version = "0.4.0", default-features = false }
+ark-ec = { version = "0.4.0", default-features = false }
+ark-ff = { version = "0.4.0", default-features = false }
+ark-std = { version = "0.4.0", default-features = false }
+
+# Frontier Client
+fc-api = { git = "https://github.com/polkadot-evm/frontier", branch = "master" }
+fc-cli = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fc-consensus = { git = "https://github.com/polkadot-evm/frontier", branch = "master" }
+fc-db = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fc-mapping-sync = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fc-rpc = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fc-rpc-core = { git = "https://github.com/polkadot-evm/frontier", branch = "master" }
+fc-storage = { git = "https://github.com/polkadot-evm/frontier", branch = "master" }
+# Frontier Primitive
+fp-account = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fp-consensus = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fp-dynamic-fee = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fp-ethereum = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fp-evm = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fp-rpc = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fp-self-contained = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+fp-storage = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+# Frontier FRAME
+pallet-base-fee = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+pallet-dynamic-fee = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+pallet-ethereum = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+pallet-evm = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+pallet-evm-chain-id = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+pallet-evm-precompile-modexp = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+pallet-evm-precompile-sha3fips = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+pallet-evm-precompile-simple = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+pallet-evm-test-vector-support = { git = "https://github.com/polkadot-evm/frontier", branch = "master" }
+pallet-hotfix-sufficients = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+# Frontier Utility
+precompile-utils = { git = "https://github.com/polkadot-evm/frontier", branch = "master", default-features = false }
+# Frontier Template
+aya-runtime = { path = "runtime", default-features = false }
+
+[profile.release]
+# Substrate runtime requires unwinding.
+panic = "unwind"
+
+[profile.production]
+inherits = "release"
+# Sacrifice compile speed for execution speed by using optimization flags:
+# https://doc.rust-lang.org/rustc/linker-plugin-lto.html
+lto = true
+# https://doc.rust-lang.org/rustc/codegen-options/index.html#codegen-units
+codegen-units = 1
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..a09d265
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,36 @@
+# Note: This is currently designed to simplify development
+# To get a smaller docker image, there should be 2 images generated, in 2 stages.
+
+FROM rustlang/rust:nightly
+
+
+ARG PROFILE=release
+WORKDIR /aya
+
+# Upcd dates core parts
+RUN apt-get update -y && \
+	apt-get install -y cmake pkg-config libssl-dev git gcc build-essential clang libclang-dev protobuf-compiler
+
+# Install rust wasm. Needed for substrate wasm engine
+RUN rustup target add wasm32-unknown-unknown
+
+# Download Frontier repo
+RUN git clone https://github.com/worldmobilegroup/aya-node /aya
+RUN cd /aya && git submodule init && git submodule update
+
+# Download rust dependencies and build the rust binary
+RUN cargo build "--$PROFILE"
+
+# 30333 for p2p traffic
+# 9933 for RPC call
+# 9944 for Websocket
+# 9615 for Prometheus (metrics)
+EXPOSE 30333 9933 9944 9615
+
+
+ENV PROFILE ${PROFILE}
+
+# The execution will re-compile the project to run it
+# This allows to modify the code and not have to re-compile the
+# dependencies.
+CMD cargo run --bin aya-node "--$PROFILE" -- --dev
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
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+
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diff --git a/README.md b/README.md
new file mode 100644
index 0000000..ef8ba04
--- /dev/null
+++ b/README.md
@@ -0,0 +1,211 @@
+# Substrate AyA Node Template
+
+A [FRAME](https://docs.substrate.io/v3/runtime/frame)-based [Substrate](https://substrate.io) node with the Ethereum RPC
+support, ready for hacking
+:rocket:
+
+## Generation
+
+This template was originally forked from the
+[Frontier Node Template](https://github.com/polkadot-evm/frontier/tree/master/template). You
+can find more information on features on this template there, and more detailed usage on the
+[Substrate Developer Hub Tutorials](https://docs.substrate.io/tutorials/v3/) that use this heavily.
+
+## Build & Run
+
+To build the chain, execute the following commands from the project root:
+
+```
+$ cargo build --release
+```
+
+To execute the chain, run:
+
+```
+$ ./target/release/aya-node --dev
+```
+
+The node also supports to use manual seal (to produce block manually through RPC).  
+This is also used by the ts-tests:
+
+```
+$ ./target/release/aya-node --dev --sealing=manual
+# Or
+$ ./target/release/aya-node --dev --sealing=instant
+```
+
+### Docker Based Development
+
+Optionally, you can build and run the AyA node within Docker directly.  
+The Dockerfile is optimized for development speed.  
+(Running the `docker run...` command will recompile the binaries but not the dependencies)
+
+Building (takes 5-10 min):
+
+```bash
+docker build -t aya-node .
+```
+
+Running (takes 1 min to rebuild binaries):
+
+```bash
+docker run -t aya-node-dev
+```
+
+## Genesis Configuration
+
+The development [chain spec](node/src/chain_spec.rs) included with this project defines a genesis
+block that has been pre-configured with an EVM account for
+[Alice](https://docs.substrate.io/v3/tools/subkey#well-known-keys). When
+[a development chain is started](https://github.com/substrate-developer-hub/substrate-node-template#run),
+Alice's EVM account will be funded with a large amount of Ether. The
+[Polkadot UI](https://polkadot.js.org/apps/#?rpc=ws://127.0.0.1:9944) can be used to see the details
+of Alice's EVM account. In order to view an EVM account, use the `Developer` tab of the Polkadot UI
+`Settings` app to define the EVM `Account` type as below. It is also necessary to define the
+`Address` and `LookupSource` to send transaction, and `Transaction` and `Signature` to be able to
+inspect blocks:
+
+```json
+{
+	"Address": "MultiAddress",
+	"LookupSource": "MultiAddress",
+	"Account": {
+		"nonce": "U256",
+		"balance": "U256"
+	},
+	"Transaction": {
+		"nonce": "U256",
+		"action": "String",
+		"gas_price": "u64",
+		"gas_limit": "u64",
+		"value": "U256",
+		"input": "Vec<u8>",
+		"signature": "Signature"
+	},
+	"Signature": {
+		"v": "u64",
+		"r": "H256",
+		"s": "H256"
+	}
+}
+```
+
+Use the `Developer` app's `RPC calls` tab to query `eth > getBalance(address, number)` with Alice's
+EVM account ID (`0xd43593c715fdd31c61141abd04a99fd6822c8558`); the value that is returned should be:
+
+```text
+x: eth.getBalance
+340,282,366,920,938,463,463,374,607,431,768,211,455
+```
+
+> Further reading:
+> [EVM accounts](https://github.com/danforbes/danforbes/blob/master/writings/eth-dev.md#Accounts)
+
+Alice's EVM account ID was calculated using
+[an included utility script](utils/README.md#--evm-address-address).
+
+## Example 1: ERC20 Contract Deployment using EVM dispatchable
+
+The following steps are also available as a [Typescript script](examples/contract-erc20) using
+Polkadot JS SDK
+
+### Step 1: Contract creation
+
+The [`truffle`](examples/contract-erc20/truffle) directory contains a
+[Truffle](https://www.trufflesuite.com/truffle) project that defines
+[an ERC-20 token](examples/contract-erc20/truffle/contracts/MyToken.sol). For convenience, this
+repository also contains
+[the compiled bytecode of this token contract](examples/contract-erc20/truffle/contracts/MyToken.json#L259),
+which can be used to deploy it to the Substrate blockchain.
+
+> Further reading:
+> [the ERC-20 token standard](https://github.com/danforbes/danforbes/blob/master/writings/eth-dev.md#EIP-20-ERC-20-Token-Standard)
+
+Use the Polkadot UI `Extrinsics` app to deploy the contract from Alice's account (submit the
+extrinsic as a signed transaction) using `evm > create` with the following parameters:
+
+```
+source: 0xd43593c715fdd31c61141abd04a99fd6822c8558
+init: <raw contract bytecode, a very long hex value>
+value: 0
+gas_limit: 4294967295
+gas_price: 1
+nonce: <empty> {None}
+```
+
+The values for `gas_limit` and `gas_price` were chosen for convenience and have little inherent or
+special meaning. Note that `None` for the nonce will increment the known nonce for the source
+account, starting from `0x0`, you may manually set this but will get an "evm.InvalidNonce" error if
+not set correctly.
+
+Once the extrinsic is in a block, navigate to the `Network` -> `Explorer` tab in the UI, or open up
+the browser console to see that the EVM pallet has fired a `Created` event with an `address` field
+that provides the address of the newly-created contract:
+
+```bash
+# console:
+... {"phase":{"applyExtrinsic":2},"event":{"index":"0x0901","data":["0x8a50db1e0f9452cfd91be8dc004ceb11cb08832f"]} ...
+
+# UI:
+evm.Created
+A contract has been created at given [address]
+   H160: 0x8a50db1e0f9452cfd91be8dc004ceb11cb08832f
+```
+
+In this case, however, it is trivial to
+[calculate this value](https://ethereum.stackexchange.com/a/46960):
+`0x8a50db1e0f9452cfd91be8dc004ceb11cb08832f`. That is because EVM contract account IDs are
+determined solely by the ID and nonce of the contract creator's account and, in this case, both of
+those values are well-known (`0xd43593c715fdd31c61141abd04a99fd6822c8558` and `0x0`, respectively).
+
+### Step 2: Check Contract Storage
+
+Use the `Chain State` UI tab to query`evm > accountCodes` for both Alice's and the contract's
+account IDs; notice that Alice's account code is empty and the contract's is equal to the bytecode
+of the Solidity contract.
+
+The ERC-20 contract that was deployed inherits from
+[the OpenZeppelin ERC-20 implementation](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol)
+and extends its capabilities by adding
+[a constructor that mints a maximum amount of tokens to the contract creator](examples/contract-erc20/truffle/contracts/MyToken.sol#L8).
+Use the `Chain State` app to query `evm > accountStorage` and view the value associated with Alice's
+account in the `_balances` map of the ERC-20 contract; use the ERC-20 contract address
+(`0x8a50db1e0f9452cfd91be8dc004ceb11cb08832f`) as the first parameter and the storage slot to read
+as the second parameter (`0x045c0350b9cf0df39c4b40400c965118df2dca5ce0fbcf0de4aafc099aea4a14`). The
+value that is returned should be
+`0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff`.
+
+The storage slot was calculated using
+[a provided utility](utils/README.md#--erc20-slot-slot-address). (Slot 0 and alice address:
+`0xd43593c715fdd31c61141abd04a99fd6822c8558`)
+
+> Further reading:
+> [EVM layout of state variables in storage](https://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage)
+
+### Step 3: Contract Usage
+
+Use the `Developer` -> `Extrinsics` tab to invoke the `transfer(address, uint256)` function on the
+ERC-20 contract with `evm > call` and transfer some of the ERC-20 tokens from Alice to Bob.
+
+```text
+target: 0x8a50db1e0f9452cfd91be8dc004ceb11cb08832f
+source: 0xd43593c715fdd31c61141abd04a99fd6822c8558
+input: 0xa9059cbb0000000000000000000000008eaf04151687736326c9fea17e25fc528761369300000000000000000000000000000000000000000000000000000000000000dd
+value: 0
+gas_limit: 4294967295
+gas_price: 1
+```
+
+The value of the `input` parameter is an EVM ABI-encoded function call that was calculated using
+[the Remix web IDE](http://remix.ethereum.org); it consists of a function selector (`0xa9059cbb`)
+and the arguments to be used for the function invocation. In this case, the arguments correspond to
+Bob's EVM account ID (`0x8eaf04151687736326c9fea17e25fc5287613693`) and the number of tokens to be
+transferred (`0xdd`, or 221 in hex).
+
+> Further reading:
+> [the EVM ABI specification](https://solidity.readthedocs.io/en/latest/abi-spec.html)
+
+### Step 4: Check Bob Contract Storage
+
+After the extrinsic has finalized, use the `Chain State` app to query `evm > accountStorage` to see
+the ERC-20 balances for both Alice and Bob.
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diff --git a/docs/guide_custom_account.md b/docs/guide_custom_account.md
new file mode 100644
index 0000000..a74d4e3
--- /dev/null
+++ b/docs/guide_custom_account.md
@@ -0,0 +1,103 @@
+# Custom Accounts
+
+This guide shows how to create and configure a wallet to interact with a local AyA Blockchain. For that purpose you should have a local network running already. You can do this by starting a `--dev` instance of the node or by following the [Local Chain Setup Guide](/guide_local_chain_setup.md).
+
+It is possible to use MetaMask for transfering funds but it is not possible to interact with polkadotjs and the more complex chain functions using MetaMask. For that purpose we use the Talisman wallet. 
+
+## MetaMask
+
+AyA works with usual Ethereum accounts and there is nothing special needed beside configuring a network on MetaMask. 
+We recommend you to create a new account in metamask for testing Aya. 
+
+### Install MetaMask
+
+To install the MetaMask browser extension please follow the instructions on metamask.io:
+[MetaMask Download](`https://metamask.io/download/`)
+
+We assume you are familiar with crypto wallets, please create yourself a new account for testing with AyA and note down the recovery phrase, so you can reuse this account. 
+
+#### Configure RPC Endpoints
+
+Interacting with AyA from a wallet requires to configure the network in MetaMask. 
+
+Open MetaMask and go to `Settings`:
+
+Go to `Networks` in the menu on the left and then click on the blue Button `Add a network` on the right side:
+
+![Network Settings](assets/settings.png)
+
+This will show you a list of available networks but we need to `Add a network manually`:
+
+![Add Network](assets/add_network.png)
+
+Enter the values below and click save: 
+
+![AyA Local Testnet](assets/aya_local_testnet.png)
+
+Select the network via the selector in the top left corner: 
+![Network Selector](assets/network_selector.png)
+
+Congratulations you successfully connected your MetaMask wallet to AyA. Copy your address go to the [polkadotjs web interface](https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A9944#/accounts) and send some funds from one of the development accounts. 
+
+
+## Talisman
+
+To be able to interact with AyA's advanced functionallty, a wallet able to connect to polkadotjs is needed. MetaMask is not able to do this out of the box, we recommend to use the Talisman wallet for now.
+
+For this tutorial we will restore the same wallet you created in MetaMask so we assume you have your recovery keys from the first part available. 
+
+**We will use the well known mnemonic from Alice for this tutorial, this mnemonic is publicly known and should only be used for demonstration purposes:**
+
+```
+bottom drive obey lake curtain smoke basket hold race lonely fit walk
+```
+
+### Install the Talisman Browser Extension
+
+Go to the [Talisman Website](https://www.talisman.xyz/) and follow the instructions to install the talisman wallet extension.
+
+#### Restore MetaMask Wallet in Talisman 
+
+As mentioned above we want to restore the same account we used in MetaMask. Open the browser extension and click on the three dots `...` in the bottom right corner, click `Add Account`.
+
+Select `Import` and choose `Import via Recovery Phrase`:
+
+![Talisman Import](assets/talisman_import.png)
+
+In the following dialog we need to select the account type, choose `Ethereum`, give your wallet a name and enter your mnemonic: 
+
+![Account Type](assets/account_type.png)
+
+Click `Import`. 
+
+We successfully added the account to the Talisman Wallet but we also need to configure the network to be able to connect with the AyA blockchain. 
+
+Go to `Settings` -> `Network & Tokens` -> `Manage Networks`:
+
+![Talisman Manage Networks](assets/talis_mng_networks.png)
+
+In the following dialog first select `Polkadot` and then click `+ Add network`:
+
+![Talisman Add Network](assets/talis_add_network.png)
+
+Make sure the node you connect to is started with the flag `--unsafe-rpc-external` as RPC websockets are disabled for validator nodes by default. In a production environment, the RPC endpoints of a validator should never be exposed!
+You can also configure a full node conected to the network with TLS termination on the RPC socket (the proper way to connect to a blockchain node, but we assume here a local devnet).
+
+Enter the following information for the network and save: 
+
+![Talisman Network Data](assets/talisman_net.png)
+
+#### Connect to polkadotjs
+
+Go to [polkadotjs web interface](https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A9944#/accounts) 
+
+When entering the web interface, the Talisman wallet should pop up and ask you to connect to the website: 
+
+![Talisman Connect](assets/polkajs_talis_con.png)
+
+Choose the AyA Test Account you restored before and click `Connect 1`
+
+Congratulations, you are now able to interact with the AyA chain using your own wallet. Your connected accounts are displayed under `extension`.
+
+![Final Polkadotjs View](assets/polkajs_fin.png)
+
diff --git a/docs/guide_local_chain_setup.md b/docs/guide_local_chain_setup.md
new file mode 100644
index 0000000..f011351
--- /dev/null
+++ b/docs/guide_local_chain_setup.md
@@ -0,0 +1,70 @@
+# Local Chain Setup
+This guide shows how to setup a blockchain network locally using the well-known accounts. 
+
+
+## Build
+
+To build the chain, execute the following commands from the project root:
+
+```
+$ cargo build --release
+```
+
+## Purge existing chains
+If you created a network before and you want to start over again you need to delete existing chain data.
+
+Purge Alice: 
+```
+$ ./target/release/aya-node purge-chain --base-path /tmp/alice --chain local
+```
+
+Purge Bob: 
+```
+$ ./target/release/aya-node purge-chain --base-path /tmp/bob --chain local
+```
+
+## Run the first Node
+
+To execute the first node (Alith/Alice), open a new terminal and run:
+
+```
+$ ./target/release/aya-node \
+--base-path /tmp/alice \
+--chain local \
+--alice \
+--port 30333 \
+--rpc-port 9944 \
+--unsafe-rpc-external
+--node-key 0000000000000000000000000000000000000000000000000000000000000001 \
+--validator
+```
+
+In the terminal window you will find the following line:
+![alt text](assets/node_identity_alice.png)
+
+Copy the node key and paste it into the startup command for the second node at`--bootnodes /ip4/127.0.0.1/tcp/30333/p2p/<REPLACE ME WITH NODE KEY FROM ALICE>`
+
+## Run the second
+
+To execute the second node (Baltathar/Bob), open a new terminal and run:
+
+```
+$ ./target/release/aya-node \
+--base-path /tmp/bob \
+--chain local \
+--bob \
+--port 30334 \
+--rpc-port 9946 \
+--validator \
+--bootnodes /ip4/127.0.0.1/tcp/30333/p2p/<REPLACE ME WITH NODE KEY FROM ALICE>
+```
+
+## Connect to the local network using polkadot-js
+
+Open your browser and go to: `https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A9944#/explorer`
+
+Your should see something similar to: 
+
+![polkadotjs image](assets/polkadotjs_explorer.png)
+
+Congratulations you setup a local aya blockchain for development and testing. 
\ No newline at end of file
diff --git a/examples/contract-erc20/.gitignore b/examples/contract-erc20/.gitignore
new file mode 100644
index 0000000..34b23da
--- /dev/null
+++ b/examples/contract-erc20/.gitignore
@@ -0,0 +1,2 @@
+/build/
+/node_modules/
diff --git a/examples/contract-erc20/README.md b/examples/contract-erc20/README.md
new file mode 100644
index 0000000..d3a3ca5
--- /dev/null
+++ b/examples/contract-erc20/README.md
@@ -0,0 +1,76 @@
+# ERC20 contract creation
+
+This directory contains typescript script describing the different
+topics presented by the frontier node template.
+
+## Basic
+
+### Installation and Usage
+
+Use `npm i` to install dependencies. To create an ERC20 contract,
+execute `node_modules/.bin/ts-node create-erc20.ts` while your
+template node is running in `--dev` mode.
+
+### Expected output
+
+The ouput of the command should look similar to this:
+
+```
+└────╼ ts-node create-erc20.ts
+Initiating the API (ignore message "Unable to resolve type B..." and "Unknown types found...")
+Unable to resolve type B, it will fail on construction
+Unknown types found, no types for B, Receipt, Transaction
+Initialiation done
+Genesis at block: 0x8455be17576e759feb9f027d79185d4e51fe91113185ef9a315614a35f0f86d8
+Alice Substrate Account: 5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY
+Alice Substrate Account (nonce: 0) balance, free: 0x00000000000000001000000000000000
+Alice EVM Account: 0x57d213d0927ccc7596044c6ba013dd05522aacba
+Alice EVM Account (nonce: 0) balance: 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
+
+Step 1: Creating Smart Contract
+Contract creation is Ready
+Contract creation is {"InBlock":"0xb7f31941812cfddede61918a219d472d3b953e05b619a6baa2bd6847a6140bad"}
+Contract included at blockHash 0xb7f31941812cfddede61918a219d472d3b953e05b619a6baa2bd6847a6140bad
+Waiting for finalization... (can take a minute)
+Contract creation is {"Finalized":"0xb7f31941812cfddede61918a219d472d3b953e05b619a6baa2bd6847a6140bad"}
+Contract finalized at blockHash 0xb7f31941812cfddede61918a219d472d3b953e05b619a6baa2bd6847a6140bad
+Contract address: 0x11650d764feb44f78810ef08700c2284f7e81dcb
+
+Step 2: Retrieving Contract from evm address: 0x11650d764feb44f78810ef08700c2284f7e81dcb
+Alice Substrate Account (nonce: 1) balance, free: 1152921500186875190
+Contract account code: 0x60806040523480...6c63430005100032
+Alice Contract storage key: 0xa7473b24b6fd8e15602cfb2f15c6a2e2770a692290d0c5097b77dd334132b7ce
+Alice Contract account storage: 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
+
+Step 3: Transfering Tokens to Bob EVM Account: 0x8bc395119f39603402d0c85bc9eda5dfc5ae2160
+Preparing transfer of 0xdd
+Sending call input: 0xa9059cbb0000000000000000000000008bc395119f39603402d0c85bc9eda5dfc5ae216000000000000000000000000000000000000000000000000000000000000000dd
+Transfer is Ready
+Transfer is {"InBlock":"0x22dcfc5b497bd1ea42ef38a33ebaee959a9fbd4337389c8a6a0961fc0af4910b"}
+Transfer included at blockHash 0x22dcfc5b497bd1ea42ef38a33ebaee959a9fbd4337389c8a6a0961fc0af4910b
+Waiting for finalization... (can take a minute)
+Transfer is {"Finalized":"0x22dcfc5b497bd1ea42ef38a33ebaee959a9fbd4337389c8a6a0961fc0af4910b"}
+Transfer finalized at blockHash 0x22dcfc5b497bd1ea42ef38a33ebaee959a9fbd4337389c8a6a0961fc0af4910b
+
+Step 4: Retrieving Bob tokens
+Bob Substrate Account (nonce: 0) balance, free: 1152921504606846976
+Bob EVM Account: 0x8bc395119f39603402d0c85bc9eda5dfc5ae2160
+Bob EVM Account (nonce: 0) balance: 0x0000000000000000000000000000000000000000000000000000000000000000
+Bob Contract storage key: 0x0e4b5229940f8e2bf475520e854b789139893f70ee7b5ec9006de746028449fe
+Bob Contract account storage: 0x00000000000000000000000000000000000000000000000000000000000000dd
+```
+
+## RPC
+
+This section describes how to use the web3.js SDK to interact with
+Frontier.
+
+## Installation and Usage
+
+Use `npm i` to install dependencies. To create an ERC20 contract,
+execute `node_modules/.bin/ts-node create-erc20.ts` while your
+template node is running in `--dev` mode.
+
+## Expected output
+
+WIP
diff --git a/examples/contract-erc20/create-erc20-rpc.ts b/examples/contract-erc20/create-erc20-rpc.ts
new file mode 100755
index 0000000..8a383a5
--- /dev/null
+++ b/examples/contract-erc20/create-erc20-rpc.ts
@@ -0,0 +1,83 @@
+import Web3 from "web3";
+import * as web3Utils from 'web3-utils';
+
+const web3 = new Web3("http://127.0.0.1:9933");
+const ERC20_BYTECODE = require("./truffle/contracts/MyToken.json").bytecode;
+const STORAGE_SLOT = "0";
+
+const createAccount = () => {
+	const account = web3.eth.accounts.create();
+	const mapStorageSlot = STORAGE_SLOT.padStart(64, '0');
+	const mapKey = account.address.toString().substring(2).padStart(64, '0');
+	const storageKey = web3Utils.sha3('0x'.concat(mapKey.concat(mapStorageSlot)));
+	return {...account, storageKey};
+}
+
+const main = async () => {
+
+	console.log("Generating accounts...");
+	const alice = createAccount();
+	const bob = createAccount();
+
+	// Step 1: Creating the contract.
+	console.log(`Alice account: ${alice.address}\n		storageKey [slot ${STORAGE_SLOT}]: ${alice.storageKey}`);
+	console.log(`Bob account: ${bob.address}\n	  storageKey [slot ${STORAGE_SLOT}]: ${bob.storageKey}`);
+
+	console.log(`\nCreating contract using Eth RPC "sendTransaction" from alice`);
+	const createTransaction = await alice.signTransaction(
+		{
+			data: ERC20_BYTECODE,
+			value: "0x00",
+			gasPrice: "0x00",
+			gas: "0x100000",
+		});
+	console.log("Transaction", {
+		...createTransaction,
+		rawTransaction: `${createTransaction.rawTransaction.substring(
+			0,
+			32
+		)}... (${createTransaction.rawTransaction.length} length)`,
+	});
+
+	const createReceipt = await web3.eth.sendSignedTransaction(
+		createTransaction.rawTransaction
+	);
+	console.log(
+		`Contract deployed at address ${createReceipt.contractAddress}`
+	);
+
+	// Step 2: Sending contract tokens to bob
+	console.log(`\nSending 221 Contract tokens from alice to bob`);
+	const transferFnCode = `a9059cbb000000000000000000000000`;
+	const tokensToTransfer = `00000000000000000000000000000000000000000000000000000000000000dd`;
+	const inputCode = `0x${transferFnCode}${bob.address.substring(
+		2
+	)}${tokensToTransfer}`;
+
+	const transferTransaction = await alice.signTransaction(
+		{
+			to: createReceipt.contractAddress,
+			data: inputCode,
+			value: "0x00",
+			gasPrice: "0x00",
+			gas: "0x100000",
+		});
+	console.log("Transaction", {
+		...transferTransaction,
+		rawTransaction: `${transferTransaction.rawTransaction.substring(
+			0,
+			32
+		)}... (${transferTransaction.rawTransaction.length} length)`,
+	});
+
+	const transferReceipt = await web3.eth.sendSignedTransaction(
+		transferTransaction.rawTransaction
+	);
+	console.log(
+		`Transfer executed to ${transferReceipt.to} (H: ${transferReceipt.transactionHash})`
+	);
+};
+
+main().catch((err) => {
+	console.log("Error", err);
+});
diff --git a/examples/contract-erc20/create-erc20.ts b/examples/contract-erc20/create-erc20.ts
new file mode 100644
index 0000000..1f79e3d
--- /dev/null
+++ b/examples/contract-erc20/create-erc20.ts
@@ -0,0 +1,203 @@
+import { ApiPromise, WsProvider, Keyring } from "@polkadot/api";
+import { KeyringPair } from '@polkadot/keyring/types';
+import { U8aFixed } from '@polkadot/types/codec';
+import * as web3Utils from 'web3-utils';
+import * as crypto from '@polkadot/util-crypto';
+
+// Provider is set to 127.0.0.1 for development
+const wsProvider = new WsProvider("ws://127.0.0.1:9944");
+
+// Keyring needed to sign using Alice account
+const keyring = new Keyring({ type: 'sr25519' });
+
+// ByteCode of our ERC20 exemple: copied from ./truffle/contracts/MyToken.json
+const ERC20_BYTECODES = require("./truffle/contracts/MyToken.json").bytecode;
+
+// Setup the API and Alice Account
+async function init() {
+	console.log(`Initiating the API (ignore message "Unable to resolve type B..." and "Unknown types found...")`);
+
+	// Initiate the polkadot API.
+	const api = await ApiPromise.create({
+		provider: wsProvider,
+		types: {
+			// mapping the actual specified address format
+			Address: "AccountId",
+			// mapping the lookup
+			LookupSource: "AccountId",
+			Account: {
+				nonce: "U256",
+				balance: "U256"
+			},
+			Transaction: {
+				nonce: "U256",
+				action: "String",
+				gas_price: "u64",
+				gas_limit: "u64",
+				value: "U256",
+				input: "Vec<u8>",
+				signature: "Signature"
+			},
+			Signature: {
+				v: "u64",
+				r: "H256",
+				s: "H256"
+			}
+		}
+	});
+	console.log(`Initialiation done`);
+	console.log(`Genesis at block: ${api.genesisHash.toHex()}`);
+
+	const alice = keyring.addFromUri('//Alice', { name: 'Alice default' });
+	const bob = keyring.addFromUri('//Bob', { name: 'Bob default' });
+
+	const { nonce, data: balance } = await api.query.system.account(alice.address);
+	console.log(`Alice Substrate Account: ${alice.address}`);
+	console.log(`Alice Substrate Account (nonce: ${nonce}) balance, free: ${balance.free.toHex()}`);
+
+	const aliceEvmAccount = `0x${crypto.blake2AsHex(crypto.decodeAddress(alice.address), 256).substring(26)}`;
+
+	console.log(`Alice EVM Account: ${aliceEvmAccount}`);
+	const evmData = (await api.query.evm.accounts(aliceEvmAccount)) as any;
+	console.log(`Alice EVM Account (nonce: ${evmData.nonce}) balance: ${evmData.balance.toHex()}`);
+
+	return { api, alice, bob };
+}
+
+// Create the ERC20 contract from ALICE
+async function step1(api: ApiPromise, alice: KeyringPair) {
+
+	console.log(`\nStep 1: Creating Smart Contract`);
+
+	// params: [bytecode, initialBalance, gasLimit, gasPrice],
+	// tx: api.tx.evm.create
+
+	const transaction = await api.tx.evm.create(ERC20_BYTECODES, 0, 4294967295, 1, null);
+
+	const contract = new Promise<{ block: string, address: string }>(async (resolve, reject) => {
+		const unsub = await transaction.signAndSend(alice, (result) => {
+			console.log(`Contract creation is ${result.status}`);
+			if (result.status.isInBlock) {
+				console.log(`Contract included at blockHash ${result.status.asInBlock}`);
+				console.log(`Waiting for finalization... (can take a minute)`);
+			} else if (result.status.isFinalized) {
+				const contractAddress = (
+					result.events?.find(
+						event => event?.event?.index.toHex() == "0x0500"
+					)?.event.data[0] as any
+				).address as string;
+				console.log(`Contract finalized at blockHash ${result.status.asFinalized}`);
+				console.log(`Contract address: ${contractAddress}`);
+				unsub();
+				resolve({
+					block: result.status.asFinalized.toString(),
+					address: contractAddress
+				});
+			}
+		});
+	});
+	return contract;
+}
+
+// Retrieve Alice & Contract Storage
+async function step2(api: ApiPromise, alice: KeyringPair, contractAddress: string) {
+
+	console.log(`\nStep 2: Retrieving Contract from evm address: ${contractAddress}`);
+
+	// Retrieve Alice account with new nonce value
+	const { nonce, data: balance } = await api.query.system.account(alice.address);
+	console.log(`Alice Substrate Account (nonce: ${nonce}) balance, free: ${balance.free}`);
+
+	const accountCode = (await api.query.evm.accountCodes(contractAddress)).toString();
+	console.log(`Contract account code: ${accountCode.substring(0, 16)}...${accountCode.substring(accountCode.length - 16)}`);
+
+	// Computing Contract Storage Slot, using slot 0 and alice EVM account
+	const aliceEvmAccount = `0x${crypto.blake2AsHex(crypto.decodeAddress(alice.address), 256).substring(26)}`;
+	const slot = "0";
+	const mapStorageSlot = slot.padStart(64, '0');
+	const mapKey = aliceEvmAccount.toString().substring(2).padStart(64, '0');
+
+	const storageKey = web3Utils.sha3('0x'.concat(mapKey.concat(mapStorageSlot)));
+	console.log(`Alice Contract storage key: ${storageKey}`);
+
+	const accountStorage = (await api.query.evm.accountStorages(contractAddress, storageKey)).toString();
+	console.log(`Alice Contract account storage: ${accountStorage}`);
+	return;
+}
+
+
+// Transfer tokens to Bob
+async function step3(api: ApiPromise, alice: KeyringPair, bob: KeyringPair, contractAddress: string) {
+
+	const bobEvmAccount = `0x${crypto.blake2AsHex(crypto.decodeAddress(bob.address), 256).substring(26)}`;
+	console.log(`\nStep 3: Transfering Tokens to Bob EVM Account: ${bobEvmAccount}`);
+
+	console.log(`Preparing transfer of 0xdd`);
+	// params: [contractAddress, inputCode, value,m gasLimit, gasPrice],
+	// tx: api.tx.evm.create
+	const transferFnCode = `a9059cbb000000000000000000000000`;
+	const tokensToTransfer = `00000000000000000000000000000000000000000000000000000000000000dd`;
+	const inputCode = `0x${transferFnCode}${bobEvmAccount.substring(2)}${tokensToTransfer}`;
+	console.log(`Sending call input: ${inputCode}`);
+	const transaction = await api.tx.evm.call(contractAddress, inputCode, 0, 4294967295, 1, null);
+
+	const data = new Promise<{ block: string, address: string }>(async (resolve, reject) => {
+		const unsub = await transaction.signAndSend(alice, (result) => {
+			console.log(`Transfer is ${result.status}`);
+			if (result.status.isInBlock) {
+				console.log(`Transfer included at blockHash ${result.status.asInBlock}`);
+				console.log(`Waiting for finalization... (can take a minute)`);
+			} else if (result.status.isFinalized) {
+				console.log(`Transfer finalized at blockHash ${result.status.asFinalized}`);
+				unsub();
+				resolve();
+			}
+		});
+	});
+	return data;
+}
+
+// Retrieve Bob
+async function step4(api: ApiPromise, bob: KeyringPair, contractAddress: string) {
+
+	console.log(`\nStep 4: Retrieving Bob tokens`);
+
+	// Retrieve Bob account with new nonce value
+	const { nonce, data: balance } = await api.query.system.account(bob.address);
+	console.log(`Bob Substrate Account (nonce: ${nonce}) balance, free: ${balance.free}`);
+	const bobEvmAccount = `0x${crypto.blake2AsHex(crypto.decodeAddress(bob.address), 256).substring(26)}`;
+
+	console.log(`Bob EVM Account: ${bobEvmAccount}`);
+	const evmData = (await api.query.evm.accounts(bobEvmAccount)) as any;
+	console.log(`Bob EVM Account (nonce: ${evmData.nonce}) balance: ${evmData.balance.toHex()}`);
+
+	const slot = "0";
+	const mapStorageSlot = slot.padStart(64, '0');
+	const mapKey = bobEvmAccount.toString().substring(2).padStart(64, '0');
+
+	const storageKey = web3Utils.sha3('0x'.concat(mapKey.concat(mapStorageSlot)));
+	console.log(`Bob Contract storage key: ${storageKey}`);
+
+	const accountStorage = (await api.query.evm.accountStorages(contractAddress, storageKey)).toString();
+	console.log(`Bob Contract account storage: ${accountStorage}`);
+
+	return;
+}
+
+async function main() {
+	const { api, alice, bob } = await init();
+
+	// step 1: Creating the contract from ALICE
+	const contractAccount = await step1(api, alice)
+
+	// step 2: Retrieving Alice and Contract information
+	await step2(api, alice, contractAccount.address);
+
+	// step 3: Transfering Smart Contract tokens from Alice to Bob
+	await step3(api, alice, bob, contractAccount.address);
+
+	// step 3: Retrieving Bob information
+	await step4(api, bob, contractAccount.address);
+}
+
+main().catch(console.error).then(() => process.exit(0));
diff --git a/examples/contract-erc20/package-lock.json b/examples/contract-erc20/package-lock.json
new file mode 100644
index 0000000..397190e
--- /dev/null
+++ b/examples/contract-erc20/package-lock.json
@@ -0,0 +1,2483 @@
+{
+	"name": "frontier-tutorials",
+	"version": "0.0.0",
+	"lockfileVersion": 1,
+	"requires": true,
+	"dependencies": {
+		"@babel/runtime": {
+			"version": "7.9.6",
+			"resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.9.6.tgz",
+			"integrity": "sha512-64AF1xY3OAkFHqOb9s4jpgk1Mm5vDZ4L3acHvAml+53nO1XbXLuDodsVpO4OIUsmemlUHMxNdYMNJmsvOwLrvQ==",
+			"requires": {
+				"regenerator-runtime": "^0.13.4"
+			}
+		},
+		"@polkadot/api": {
+			"version": "1.16.0-beta.2",
+			"resolved": "https://registry.npmjs.org/@polkadot/api/-/api-1.16.0-beta.2.tgz",
+			"integrity": "sha512-2+5DxhnN94qVjUxTiF50gamgQe4ss59ZP9SYPcheZGgPwGA69Ly9NsHKdgNB1IVA9o3UljwwUy53gRjuE6uTpQ==",
+			"requires": {
+				"@babel/runtime": "^7.9.6",
+				"@polkadot/api-derive": "1.16.0-beta.2",
+				"@polkadot/keyring": "^2.10.1",
+				"@polkadot/metadata": "1.16.0-beta.2",
+				"@polkadot/rpc-core": "1.16.0-beta.2",
+				"@polkadot/rpc-provider": "1.16.0-beta.2",
+				"@polkadot/types": "1.16.0-beta.2",
+				"@polkadot/types-known": "1.16.0-beta.2",
+				"@polkadot/util": "^2.10.1",
+				"@polkadot/util-crypto": "^2.10.1",
+				"bn.js": "^5.1.2",
+				"eventemitter3": "^4.0.4",
+				"rxjs": "^6.5.5"
+			}
+		},
+		"@polkadot/api-derive": {
+			"version": "1.16.0-beta.2",
+			"resolved": "https://registry.npmjs.org/@polkadot/api-derive/-/api-derive-1.16.0-beta.2.tgz",
+			"integrity": "sha512-jaXeAKMiFhC1/fHnTb37xqTk0dIs2WRfoaNPeT4f3EGJuXkdeeQKeTTEsR+8sG8xBd9naBJ8vWfPpKKjapWa0g==",
+			"requires": {
+				"@babel/runtime": "^7.9.6",
+				"@polkadot/api": "1.16.0-beta.2",
+				"@polkadot/rpc-core": "1.16.0-beta.2",
+				"@polkadot/rpc-provider": "1.16.0-beta.2",
+				"@polkadot/types": "1.16.0-beta.2",
+				"@polkadot/util": "^2.10.1",
+				"@polkadot/util-crypto": "^2.10.1",
+				"bn.js": "^5.1.2",
+				"memoizee": "^0.4.14",
+				"rxjs": "^6.5.5"
+			}
+		},
+		"@polkadot/keyring": {
+			"version": "2.10.1",
+			"resolved": "https://registry.npmjs.org/@polkadot/keyring/-/keyring-2.10.1.tgz",
+			"integrity": "sha512-6Wbft7MtxbnWaHZpvg3yT8l4oQNp5xTwbqVkdaRfXmPsmhJ1YJcprFWLuKsWZE4x59cYyK7eKhnKcAvFny4HTQ==",
+			"requires": {
+				"@babel/runtime": "^7.9.6",
+				"@polkadot/util": "2.10.1",
+				"@polkadot/util-crypto": "2.10.1"
+			}
+		},
+		"@polkadot/metadata": {
+			"version": "1.16.0-beta.2",
+			"resolved": "https://registry.npmjs.org/@polkadot/metadata/-/metadata-1.16.0-beta.2.tgz",
+			"integrity": "sha512-PliHr0JSWKPmXL4VRlL4MldPW0CuMcur9XrkFmIEV+cvXxMu2J3cvZC+LASFLCbtyrpQesKeOaGk3kIm2YL4kA==",
+			"requires": {
+				"@babel/runtime": "^7.9.6",
+				"@polkadot/types": "1.16.0-beta.2",
+				"@polkadot/types-known": "1.16.0-beta.2",
+				"@polkadot/util": "^2.10.1",
+				"@polkadot/util-crypto": "^2.10.1",
+				"bn.js": "^5.1.2"
+			}
+		},
+		"@polkadot/rpc-core": {
+			"version": "1.16.0-beta.2",
+			"resolved": "https://registry.npmjs.org/@polkadot/rpc-core/-/rpc-core-1.16.0-beta.2.tgz",
+			"integrity": "sha512-GLObXxHqnoyqVBgUUgsq1ag8iJI1AlTgH3vqEEzQy8YkIQVB5XaBSH7Q+NJiauLpEVnS7eXSEKk9vITAdUwx0A==",
+			"requires": {
+				"@babel/runtime": "^7.9.6",
+				"@polkadot/metadata": "1.16.0-beta.2",
+				"@polkadot/rpc-provider": "1.16.0-beta.2",
+				"@polkadot/types": "1.16.0-beta.2",
+				"@polkadot/util": "^2.10.1",
+				"memoizee": "^0.4.14",
+				"rxjs": "^6.5.5"
+			}
+		},
+		"@polkadot/rpc-provider": {
+			"version": "1.16.0-beta.2",
+			"resolved": "https://registry.npmjs.org/@polkadot/rpc-provider/-/rpc-provider-1.16.0-beta.2.tgz",
+			"integrity": "sha512-V+hC/lx5zfQcOoB6ZM+Zc/mn6PxgIqh3Mmm7zQD8F0pE6Co+TFMP+hGUgKW/xGeNKQWUCSaRwrBvDC2cyB6Mjw==",
+			"requires": {
+				"@babel/runtime": "^7.9.6",
+				"@polkadot/metadata": "1.16.0-beta.2",
+				"@polkadot/types": "1.16.0-beta.2",
+				"@polkadot/util": "^2.10.1",
+				"@polkadot/util-crypto": "^2.10.1",
+				"bn.js": "^5.1.2",
+				"eventemitter3": "^4.0.4",
+				"isomorphic-fetch": "^2.2.1",
+				"websocket": "^1.0.31"
+			}
+		},
+		"@polkadot/types": {
+			"version": "1.16.0-beta.2",
+			"resolved": "https://registry.npmjs.org/@polkadot/types/-/types-1.16.0-beta.2.tgz",
+			"integrity": "sha512-6FU9S0m4oCFuKqVXZ+Il5Xw78DCZxBFCNTwQweRNfmNjTaKT6VxEYREk58DSajLQhn6IjjCMtZ49NdzUv2o7Jw==",
+			"requires": {
+				"@babel/runtime": "^7.9.6",
+				"@polkadot/metadata": "1.16.0-beta.2",
+				"@polkadot/util": "^2.10.1",
+				"@polkadot/util-crypto": "^2.10.1",
+				"@types/bn.js": "^4.11.6",
+				"bn.js": "^5.1.2",
+				"memoizee": "^0.4.14",
+				"rxjs": "^6.5.5"
+			}
+		},
+		"@polkadot/types-known": {
+			"version": "1.16.0-beta.2",
+			"resolved": "https://registry.npmjs.org/@polkadot/types-known/-/types-known-1.16.0-beta.2.tgz",
+			"integrity": "sha512-dEIntLkX0k2Qo+lVCu14TiC9oZVHQtHfvog6jhYY7Sn0dfpFYdN9q/1XfmR+j24noJtazh1iOtE44Ro1KeKtzQ==",
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+}
diff --git a/examples/contract-erc20/package.json b/examples/contract-erc20/package.json
new file mode 100644
index 0000000..1a142af
--- /dev/null
+++ b/examples/contract-erc20/package.json
@@ -0,0 +1,11 @@
+{
+	"name": "frontier-template-contract-erc20",
+	"version": "0.0.0",
+	"dependencies": {
+		"@polkadot/api": "^1.16.0-beta.2",
+		"@polkadot/util-crypto": "^2.10.1",
+		"ts-node": "^8.10.1",
+		"typescript": "^3.9.3",
+		"web3x": "^4.0.6"
+	}
+}
diff --git a/examples/contract-erc20/truffle/.gitignore b/examples/contract-erc20/truffle/.gitignore
new file mode 100644
index 0000000..34b23da
--- /dev/null
+++ b/examples/contract-erc20/truffle/.gitignore
@@ -0,0 +1,2 @@
+/build/
+/node_modules/
diff --git a/examples/contract-erc20/truffle/contracts/MyToken.json b/examples/contract-erc20/truffle/contracts/MyToken.json
new file mode 100644
index 0000000..d443d3d
--- /dev/null
+++ b/examples/contract-erc20/truffle/contracts/MyToken.json
@@ -0,0 +1,857 @@
+{
+  "contractName": "MyToken",
+  "abi": [
+    {
+      "inputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "constructor"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "owner",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "spender",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint256",
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "Approval",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "from",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "to",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint256",
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "Transfer",
+      "type": "event"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "owner",
+          "type": "address"
+        },
+        {
+          "internalType": "address",
+          "name": "spender",
+          "type": "address"
+        }
+      ],
+      "name": "allowance",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "spender",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "amount",
+          "type": "uint256"
+        }
+      ],
+      "name": "approve",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "account",
+          "type": "address"
+        }
+      ],
+      "name": "balanceOf",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "spender",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "subtractedValue",
+          "type": "uint256"
+        }
+      ],
+      "name": "decreaseAllowance",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "spender",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "addedValue",
+          "type": "uint256"
+        }
+      ],
+      "name": "increaseAllowance",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "totalSupply",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "recipient",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "amount",
+          "type": "uint256"
+        }
+      ],
+      "name": "transfer",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "sender",
+          "type": "address"
+        },
+        {
+          "internalType": "address",
+          "name": "recipient",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "amount",
+          "type": "uint256"
+        }
+      ],
+      "name": "transferFrom",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    }
+  ],
+  "metadata": "{\"compiler\":{\"version\":\"0.5.16+commit.9c3226ce\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{\"allowance(address,address)\":{\"details\":\"See {IERC20-allowance}.\"},\"approve(address,uint256)\":{\"details\":\"See {IERC20-approve}.     * Requirements:     * - `spender` cannot be the zero address.\"},\"balanceOf(address)\":{\"details\":\"See {IERC20-balanceOf}.\"},\"decreaseAllowance(address,uint256)\":{\"details\":\"Atomically decreases the allowance granted to `spender` by the caller.     * This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}.     * Emits an {Approval} event indicating the updated allowance.     * Requirements:     * - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`.\"},\"increaseAllowance(address,uint256)\":{\"details\":\"Atomically increases the allowance granted to `spender` by the caller.     * This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}.     * Emits an {Approval} event indicating the updated allowance.     * Requirements:     * - `spender` cannot be the zero address.\"},\"totalSupply()\":{\"details\":\"See {IERC20-totalSupply}.\"},\"transfer(address,uint256)\":{\"details\":\"See {IERC20-transfer}.     * Requirements:     * - `recipient` cannot be the zero address. - the caller must have a balance of at least `amount`.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See {IERC20-transferFrom}.     * Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. 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+                            "kind": "number",
+                            "lValueRequested": false,
+                            "nodeType": "Literal",
+                            "src": "244:3:0",
+                            "subdenomination": null,
+                            "typeDescriptions": {
+                              "typeIdentifier": "t_rational_256_by_1",
+                              "typeString": "int_const 256"
+                            },
+                            "value": "256"
+                          },
+                          "src": "241:6:0",
+                          "typeDescriptions": {
+                            "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639936_by_1",
+                            "typeString": "int_const 1157...(70 digits omitted)...9936"
+                          }
+                        },
+                        "nodeType": "BinaryOperation",
+                        "operator": "-",
+                        "rightExpression": {
+                          "argumentTypes": null,
+                          "hexValue": "31",
+                          "id": 13,
+                          "isConstant": false,
+                          "isLValue": false,
+                          "isPure": true,
+                          "kind": "number",
+                          "lValueRequested": false,
+                          "nodeType": "Literal",
+                          "src": "250:1:0",
+                          "subdenomination": null,
+                          "typeDescriptions": {
+                            "typeIdentifier": "t_rational_1_by_1",
+                            "typeString": "int_const 1"
+                          },
+                          "value": "1"
+                        },
+                        "src": "241:10:0",
+                        "typeDescriptions": {
+                          "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639935_by_1",
+                          "typeString": "int_const 1157...(70 digits omitted)...9935"
+                        }
+                      }
+                    ],
+                    "expression": {
+                      "argumentTypes": [
+                        {
+                          "typeIdentifier": "t_address_payable",
+                          "typeString": "address payable"
+                        },
+                        {
+                          "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639935_by_1",
+                          "typeString": "int_const 1157...(70 digits omitted)...9935"
+                        }
+                      ],
+                      "id": 7,
+                      "name": "_mint",
+                      "nodeType": "Identifier",
+                      "overloadedDeclarations": [],
+                      "referencedDeclaration": 522,
+                      "src": "223:5:0",
+                      "typeDescriptions": {
+                        "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$",
+                        "typeString": "function (address,uint256)"
+                      }
+                    },
+                    "id": 15,
+                    "isConstant": false,
+                    "isLValue": false,
+                    "isPure": false,
+                    "kind": "functionCall",
+                    "lValueRequested": false,
+                    "names": [],
+                    "nodeType": "FunctionCall",
+                    "src": "223:29:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_tuple$__$",
+                      "typeString": "tuple()"
+                    }
+                  },
+                  "id": 16,
+                  "nodeType": "ExpressionStatement",
+                  "src": "223:29:0"
+                }
+              ]
+            },
+            "documentation": null,
+            "id": 18,
+            "implemented": true,
+            "kind": "constructor",
+            "modifiers": [],
+            "name": "",
+            "nodeType": "FunctionDefinition",
+            "parameters": {
+              "id": 5,
+              "nodeType": "ParameterList",
+              "parameters": [],
+              "src": "207:2:0"
+            },
+            "returnParameters": {
+              "id": 6,
+              "nodeType": "ParameterList",
+              "parameters": [],
+              "src": "217:0:0"
+            },
+            "scope": 19,
+            "src": "196:61:0",
+            "stateMutability": "nonpayable",
+            "superFunction": null,
+            "visibility": "public"
+          }
+        ],
+        "scope": 20,
+        "src": "166:93:0"
+      }
+    ],
+    "src": "0:260:0"
+  },
+  "compiler": {
+    "name": "solc",
+    "version": "0.5.16+commit.9c3226ce.Emscripten.clang"
+  },
+  "networks": {},
+  "schemaVersion": "3.0.23",
+  "updatedAt": "2020-02-14T16:09:00.260Z",
+  "devdoc": {
+    "methods": {
+      "allowance(address,address)": {
+        "details": "See {IERC20-allowance}."
+      },
+      "approve(address,uint256)": {
+        "details": "See {IERC20-approve}.     * Requirements:     * - `spender` cannot be the zero address."
+      },
+      "balanceOf(address)": {
+        "details": "See {IERC20-balanceOf}."
+      },
+      "decreaseAllowance(address,uint256)": {
+        "details": "Atomically decreases the allowance granted to `spender` by the caller.     * This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}.     * Emits an {Approval} event indicating the updated allowance.     * Requirements:     * - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`."
+      },
+      "increaseAllowance(address,uint256)": {
+        "details": "Atomically increases the allowance granted to `spender` by the caller.     * This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}.     * Emits an {Approval} event indicating the updated allowance.     * Requirements:     * - `spender` cannot be the zero address."
+      },
+      "totalSupply()": {
+        "details": "See {IERC20-totalSupply}."
+      },
+      "transfer(address,uint256)": {
+        "details": "See {IERC20-transfer}.     * Requirements:     * - `recipient` cannot be the zero address. - the caller must have a balance of at least `amount`."
+      },
+      "transferFrom(address,address,uint256)": {
+        "details": "See {IERC20-transferFrom}.     * Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20};     * Requirements: - `sender` and `recipient` cannot be the zero address. - `sender` must have a balance of at least `amount`. - the caller must have allowance for `sender`'s tokens of at least `amount`."
+      }
+    }
+  },
+  "userdoc": {
+    "methods": {}
+  }
+}
\ No newline at end of file
diff --git a/examples/contract-erc20/truffle/contracts/MyToken.sol b/examples/contract-erc20/truffle/contracts/MyToken.sol
new file mode 100644
index 0000000..d8c3004
--- /dev/null
+++ b/examples/contract-erc20/truffle/contracts/MyToken.sol
@@ -0,0 +1,10 @@
+pragma solidity ^0.5.0;
+
+import '@openzeppelin/contracts/token/ERC20/ERC20.sol';
+
+// This ERC-20 contract mints the maximum amount of tokens to the contract creator.
+contract MyToken is ERC20 {
+  constructor() public {
+    _mint(msg.sender, 2**256 - 1);
+  }
+}
diff --git a/examples/contract-erc20/truffle/package-lock.json b/examples/contract-erc20/truffle/package-lock.json
new file mode 100644
index 0000000..19a4321
--- /dev/null
+++ b/examples/contract-erc20/truffle/package-lock.json
@@ -0,0 +1,7107 @@
+{
+  "name": "substrate-evm-contracts",
+  "version": "0.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
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+        "@protobufjs/fetch": "^1.1.0",
+        "@protobufjs/float": "^1.0.2",
+        "@protobufjs/inquire": "^1.1.0",
+        "@protobufjs/path": "^1.1.2",
+        "@protobufjs/pool": "^1.1.0",
+        "@protobufjs/utf8": "^1.1.0",
+        "@types/long": "^4.0.0",
+        "long": "^4.0.0"
+      }
+    },
+    "@apollo/usage-reporting-protobuf": {
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+      "resolved": "https://registry.npmjs.org/@apollo/usage-reporting-protobuf/-/usage-reporting-protobuf-4.1.1.tgz",
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+  }
+}
diff --git a/examples/contract-erc20/truffle/package.json b/examples/contract-erc20/truffle/package.json
new file mode 100644
index 0000000..e3288a3
--- /dev/null
+++ b/examples/contract-erc20/truffle/package.json
@@ -0,0 +1,8 @@
+{
+  "name": "substrate-evm-contracts",
+  "version": "0.0.0",
+  "dependencies": {
+    "@openzeppelin/contracts": "^4.9.6",
+    "truffle": "^5.10.2"
+  }
+}
diff --git a/examples/contract-erc20/truffle/truffle-config.js b/examples/contract-erc20/truffle/truffle-config.js
new file mode 100644
index 0000000..3865690
--- /dev/null
+++ b/examples/contract-erc20/truffle/truffle-config.js
@@ -0,0 +1,99 @@
+/**
+ * Use this file to configure your truffle project. It's seeded with some
+ * common settings for different networks and features like migrations,
+ * compilation and testing. Uncomment the ones you need or modify
+ * them to suit your project as necessary.
+ *
+ * More information about configuration can be found at:
+ *
+ * truffleframework.com/docs/advanced/configuration
+ *
+ * To deploy via Infura you'll need a wallet provider (like truffle-hdwallet-provider)
+ * to sign your transactions before they're sent to a remote public node. Infura accounts
+ * are available for free at: infura.io/register.
+ *
+ * You'll also need a mnemonic - the twelve word phrase the wallet uses to generate
+ * public/private key pairs. If you're publishing your code to GitHub make sure you load this
+ * phrase from a file you've .gitignored so it doesn't accidentally become public.
+ *
+ */
+
+// const HDWalletProvider = require('truffle-hdwallet-provider');
+// const infuraKey = "fj4jll3k.....";
+//
+// const fs = require('fs');
+// const mnemonic = fs.readFileSync(".secret").toString().trim();
+
+module.exports = {
+  /**
+   * Networks define how you connect to your ethereum client and let you set the
+   * defaults web3 uses to send transactions. If you don't specify one truffle
+   * will spin up a development blockchain for you on port 9545 when you
+   * run `develop` or `test`. You can ask a truffle command to use a specific
+   * network from the command line, e.g
+   *
+   * $ truffle test --network <network-name>
+   */
+
+  networks: {
+    // Useful for testing. The `development` name is special - truffle uses it by default
+    // if it's defined here and no other network is specified at the command line.
+    // You should run a client (like ganache-cli, geth or parity) in a separate terminal
+    // tab if you use this network and you must also set the `host`, `port` and `network_id`
+    // options below to some value.
+    //
+    // development: {
+    //  host: "127.0.0.1",     // Localhost (default: none)
+    //  port: 8545,            // Standard Ethereum port (default: none)
+    //  network_id: "*",       // Any network (default: none)
+    // },
+
+    // Another network with more advanced options...
+    // advanced: {
+      // port: 8777,             // Custom port
+      // network_id: 1342,       // Custom network
+      // gas: 8500000,           // Gas sent with each transaction (default: ~6700000)
+      // gasPrice: 20000000000,  // 20 gwei (in wei) (default: 100 gwei)
+      // from: <address>,        // Account to send txs from (default: accounts[0])
+      // websockets: true        // Enable EventEmitter interface for web3 (default: false)
+    // },
+
+    // Useful for deploying to a public network.
+    // NB: It's important to wrap the provider as a function.
+    // ropsten: {
+      // provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/YOUR-PROJECT-ID`),
+      // network_id: 3,       // Ropsten's id
+      // gas: 5500000,        // Ropsten has a lower block limit than mainnet
+      // confirmations: 2,    // # of confs to wait between deployments. (default: 0)
+      // timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
+      // skipDryRun: true     // Skip dry run before migrations? (default: false for public nets )
+    // },
+
+    // Useful for private networks
+    // private: {
+      // provider: () => new HDWalletProvider(mnemonic, `https://network.io`),
+      // network_id: 2111,   // This network is yours, in the cloud.
+      // production: true    // Treats this network as if it was a public net. (default: false)
+    // }
+  },
+
+  // Set default mocha options here, use special reporters etc.
+  mocha: {
+    // timeout: 100000
+  },
+
+  // Configure your compilers
+  compilers: {
+    solc: {
+      // version: "0.5.1",    // Fetch exact version from solc-bin (default: truffle's version)
+      // docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
+      // settings: {          // See the solidity docs for advice about optimization and evmVersion
+      //  optimizer: {
+      //    enabled: false,
+      //    runs: 200
+      //  },
+      //  evmVersion: "byzantium"
+      // }
+    }
+  }
+}
diff --git a/examples/contract-erc20/tsconfig.json b/examples/contract-erc20/tsconfig.json
new file mode 100644
index 0000000..c546112
--- /dev/null
+++ b/examples/contract-erc20/tsconfig.json
@@ -0,0 +1,5 @@
+{
+	"compilerOptions": {
+		"esModuleInterop": true
+	}
+}
diff --git a/examples/contract-hello/.gitignore b/examples/contract-hello/.gitignore
new file mode 100644
index 0000000..c2658d7
--- /dev/null
+++ b/examples/contract-hello/.gitignore
@@ -0,0 +1 @@
+node_modules/
diff --git a/examples/contract-hello/Hello.sol b/examples/contract-hello/Hello.sol
new file mode 100644
index 0000000..0c43439
--- /dev/null
+++ b/examples/contract-hello/Hello.sol
@@ -0,0 +1,11 @@
+pragma solidity =0.5.15;
+
+contract Hello {
+	event Said(string message);
+	address public owner;
+
+	constructor() public {
+		owner = msg.sender;
+		emit Said("Hello, world!");
+	}
+}
diff --git a/examples/contract-hello/index.js b/examples/contract-hello/index.js
new file mode 100644
index 0000000..4983f7d
--- /dev/null
+++ b/examples/contract-hello/index.js
@@ -0,0 +1,23 @@
+const Web3 = require('web3');
+const web3 = new Web3('http://127.0.0.1:8545');
+
+const ABI = [{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"message","type":"string"}],"name":"Said","type":"event"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"}];
+const BYTECODE = "0x608060405234801561001057600080fd5b50336000806101000a81548173ffffffffffffffffffffffffffffffffffffffff021916908373ffffffffffffffffffffffffffffffffffffffff1602179055507fc68045c3c562488255b55aa2c4c7849de001859ff0d8a36a75c2d5ed80100fb660405180806020018281038252600d8152602001807f48656c6c6f2c20776f726c64210000000000000000000000000000000000000081525060200191505060405180910390a160cf806100c76000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c80638da5cb5b14602d575b600080fd5b60336075565b604051808273ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200191505060405180910390f35b6000809054906101000a900473ffffffffffffffffffffffffffffffffffffffff168156fea265627a7a72315820fae816ad954005c42bea7bc7cb5b19f7fd5d3a250715ca2023275c9ca7ce644064736f6c634300050f0032";
+
+const main = async () => {
+	const devAccount = web3.eth.accounts.create();
+
+	const createTransaction = await web3.eth.accounts.signTransaction({
+		from: devAccount.address,
+		data: BYTECODE,
+		value: "0x00",
+		gasPrice: "0x00",
+		gas: "0x100000",
+	}, devAccount.privateKey);
+	console.log(createTransaction);
+
+	const createReceipt = await web3.eth.sendSignedTransaction(createTransaction.rawTransaction);
+	console.log("Contract deployed at address", createReceipt.contractAddress);
+};
+
+main();
diff --git a/examples/contract-hello/package-lock.json b/examples/contract-hello/package-lock.json
new file mode 100644
index 0000000..5cdc1a3
--- /dev/null
+++ b/examples/contract-hello/package-lock.json
@@ -0,0 +1,805 @@
+{
+  "name": "frontier-example-contract-hello",
+  "version": "0.1.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@adraffy/ens-normalize": {
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/@adraffy/ens-normalize/-/ens-normalize-1.9.2.tgz",
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+    },
+    "@ethereumjs/rlp": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/@ethereumjs/rlp/-/rlp-4.0.1.tgz",
+      "integrity": "sha512-tqsQiBQDQdmPWE1xkkBq4rlSW5QZpLOUJ5RJh2/9fug+q9tnUhuZoVLk7s0scUIKTOzEtR72DFBXI4WiZcMpvw=="
+    },
+    "@ethersproject/abi": {
+      "version": "5.7.0",
+      "resolved": "https://registry.npmjs.org/@ethersproject/abi/-/abi-5.7.0.tgz",
+      "integrity": "sha512-351ktp42TiRcYB3H1OP8yajPeAQstMW/yCFokj/AthP9bLHzQFPlOrxOcwYEDkUAICmOHljvN4K39OMTMUa9RA==",
+      "requires": {
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+        "@ethersproject/bignumber": "^5.7.0",
+        "@ethersproject/bytes": "^5.7.0",
+        "@ethersproject/constants": "^5.7.0",
+        "@ethersproject/hash": "^5.7.0",
+        "@ethersproject/keccak256": "^5.7.0",
+        "@ethersproject/logger": "^5.7.0",
+        "@ethersproject/properties": "^5.7.0",
+        "@ethersproject/strings": "^5.7.0"
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+      "requires": {
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+        "@ethersproject/transactions": "^5.7.0",
+        "@ethersproject/web": "^5.7.0"
+      }
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diff --git a/examples/contract-hello/package.json b/examples/contract-hello/package.json
new file mode 100644
index 0000000..07ef240
--- /dev/null
+++ b/examples/contract-hello/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "frontier-example-contract-hello",
+  "version": "0.1.0",
+  "description": "Hello contract example for Frontier project",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/paritytech/frontier.git"
+  },
+  "keywords": [
+    "ethereum",
+    "substrate"
+  ],
+  "author": "Parity Technologies <admin@parity.io>",
+  "license": "GPL-3.0",
+  "bugs": {
+    "url": "https://github.com/paritytech/frontier/issues"
+  },
+  "homepage": "https://github.com/paritytech/frontier",
+  "dependencies": {
+    "web3": "^4.0.2"
+  }
+}
diff --git a/node/Cargo.toml b/node/Cargo.toml
new file mode 100644
index 0000000..c73e57c
--- /dev/null
+++ b/node/Cargo.toml
@@ -0,0 +1,117 @@
+[package]
+name = "aya-node"
+version = "0.1.0"
+license = "Unlicense"
+build = "build.rs"
+description = "A fresh FRAME-based Substrate node."
+publish = false
+authors = { workspace = true }
+edition = { workspace = true }
+repository = { workspace = true }
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+async-trait = { workspace = true }
+clap = { workspace = true }
+futures = { workspace = true }
+hex-literal = { workspace = true }
+jsonrpsee = { workspace = true, features = ["server", "macros"] }
+log = { workspace = true }
+scale-codec = { workspace = true }
+serde_json = { workspace = true, features = ["arbitrary_precision"] }
+
+# Substrate
+prometheus-endpoint = { workspace = true }
+sc-basic-authorship = { workspace = true }
+sc-chain-spec = { workspace = true }
+sc-cli = { workspace = true }
+sc-client-api = { workspace = true }
+sc-consensus = { workspace = true }
+sc-consensus-aura = { workspace = true }
+sc-consensus-grandpa = { workspace = true }
+sc-consensus-manual-seal = { workspace = true }
+sc-executor = { workspace = true }
+sc-network = { workspace = true }
+sc-network-sync = { workspace = true }
+sc-offchain = { workspace = true }
+sc-rpc = { workspace = true }
+sc-rpc-api = { workspace = true }
+sc-service = { workspace = true }
+sc-telemetry = { workspace = true }
+sc-transaction-pool = { workspace = true }
+sc-transaction-pool-api = { workspace = true }
+sp-api = { workspace = true, features = ["default"] }
+sp-block-builder = { workspace = true }
+sp-blockchain = { workspace = true }
+sp-consensus-aura = { workspace = true, features = ["default"] }
+sp-consensus-grandpa = { workspace = true, features = ["default"] }
+sp-core = { workspace = true, features = ["default"] }
+sp-inherents = { workspace = true, features = ["default"] }
+sp-offchain = { workspace = true, features = ["default"] }
+sp-runtime = { workspace = true, features = ["default"] }
+sp-session = { workspace = true, features = ["default"] }
+sp-timestamp = { workspace = true, features = ["default"] }
+sp-transaction-pool = { workspace = true, features = ["default"] }
+# These dependencies are used for RPC
+frame-system-rpc-runtime-api = { workspace = true }
+pallet-transaction-payment-rpc = { workspace = true }
+pallet-transaction-payment-rpc-runtime-api = { workspace = true }
+substrate-frame-rpc-system = { workspace = true }
+# These dependencies are used for runtime benchmarking
+frame-benchmarking = { workspace = true, optional = true }
+frame-benchmarking-cli = { workspace = true, optional = true }
+frame-system = { workspace = true }
+pallet-transaction-payment = { workspace = true }
+pallet-im-online = { workspace = true }
+
+# Frontier
+fc-api = { workspace = true }
+fc-cli = { workspace = true }
+fc-consensus = { workspace = true }
+fc-db = { workspace = true }
+fc-mapping-sync = { workspace = true }
+fc-rpc = { workspace = true }
+fc-rpc-core = { workspace = true }
+fc-storage = { workspace = true }
+fp-account = { workspace = true }
+fp-dynamic-fee = { workspace = true, features = ["default"] }
+fp-evm = { workspace = true, features = ["default"] }
+fp-rpc = { workspace = true, features = ["default"] }
+aya-runtime = { workspace = true, features = ["std"] }
+
+[build-dependencies]
+substrate-build-script-utils = { workspace = true }
+
+[features]
+default = [
+	"rocksdb",
+	"sql",
+	"txpool",
+	"rpc-binary-search-estimate",
+]
+rocksdb = [
+	"sc-cli/rocksdb",
+	"sc-service/rocksdb",
+	"fc-cli/rocksdb",
+	"fc-db/rocksdb",
+	"fc-mapping-sync/rocksdb",
+	"fc-rpc/rocksdb",
+	"aya-runtime/with-rocksdb-weights",
+]
+paritydb = [
+	"aya-runtime/with-paritydb-weights",
+]
+sql = [
+	"fc-db/sql",
+	"fc-mapping-sync/sql",
+]
+txpool = ["fc-rpc/txpool"]
+rpc-binary-search-estimate = ["fc-rpc/rpc-binary-search-estimate"]
+runtime-benchmarks = [
+	"frame-benchmarking/runtime-benchmarks",
+	"frame-benchmarking-cli/runtime-benchmarks",
+	"sc-service/runtime-benchmarks",
+	"aya-runtime/runtime-benchmarks",
+]
diff --git a/node/build.rs b/node/build.rs
new file mode 100644
index 0000000..e3bfe31
--- /dev/null
+++ b/node/build.rs
@@ -0,0 +1,7 @@
+use substrate_build_script_utils::{generate_cargo_keys, rerun_if_git_head_changed};
+
+fn main() {
+	generate_cargo_keys();
+
+	rerun_if_git_head_changed();
+}
diff --git a/node/src/benchmarking.rs b/node/src/benchmarking.rs
new file mode 100644
index 0000000..6b273e6
--- /dev/null
+++ b/node/src/benchmarking.rs
@@ -0,0 +1,191 @@
+// This file is part of Substrate.
+
+// Copyright (C) 2022 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+//! Contains code to setup the command invocations in [`super::command`] which would
+//! otherwise bloat that module.
+
+use std::{sync::Arc, time::Duration};
+
+use scale_codec::Encode;
+// Substrate
+use sc_cli::Result;
+use sc_client_api::BlockBackend;
+use sp_core::{ecdsa, Pair};
+use sp_inherents::{InherentData, InherentDataProvider};
+use sp_runtime::{generic::Era, OpaqueExtrinsic, SaturatedConversion};
+// Frontier
+use fp_account::AccountId20;
+use aya_runtime::{self as runtime, AccountId, Balance, BalancesCall, SystemCall};
+
+use crate::client::Client;
+
+/// Generates extrinsics for the `benchmark overhead` command.
+///
+/// Note: Should only be used for benchmarking.
+pub struct RemarkBuilder {
+	client: Arc<Client>,
+}
+
+impl RemarkBuilder {
+	/// Creates a new [`Self`] from the given client.
+	pub fn new(client: Arc<Client>) -> Self {
+		Self { client }
+	}
+}
+
+impl frame_benchmarking_cli::ExtrinsicBuilder for RemarkBuilder {
+	fn pallet(&self) -> &str {
+		"system"
+	}
+
+	fn extrinsic(&self) -> &str {
+		"remark"
+	}
+
+	fn build(&self, nonce: u32) -> std::result::Result<OpaqueExtrinsic, &'static str> {
+		let acc = ecdsa::Pair::from_string("//Bob", None).expect("static values are valid; qed");
+		let extrinsic: OpaqueExtrinsic = create_benchmark_extrinsic(
+			self.client.as_ref(),
+			acc,
+			SystemCall::remark { remark: vec![] }.into(),
+			nonce,
+		)
+		.into();
+
+		Ok(extrinsic)
+	}
+}
+
+/// Generates `Balances::TransferKeepAlive` extrinsics for the benchmarks.
+///
+/// Note: Should only be used for benchmarking.
+pub struct TransferKeepAliveBuilder {
+	client: Arc<Client>,
+	dest: AccountId,
+	value: Balance,
+}
+
+impl TransferKeepAliveBuilder {
+	/// Creates a new [`Self`] from the given client.
+	pub fn new(client: Arc<Client>, dest: AccountId, value: Balance) -> Self {
+		Self {
+			client,
+			dest,
+			value,
+		}
+	}
+}
+
+impl frame_benchmarking_cli::ExtrinsicBuilder for TransferKeepAliveBuilder {
+	fn pallet(&self) -> &str {
+		"balances"
+	}
+
+	fn extrinsic(&self) -> &str {
+		"transfer_keep_alive"
+	}
+
+	fn build(&self, nonce: u32) -> std::result::Result<OpaqueExtrinsic, &'static str> {
+		let acc = ecdsa::Pair::from_string("//Bob", None).expect("static values are valid; qed");
+		let extrinsic: OpaqueExtrinsic = create_benchmark_extrinsic(
+			self.client.as_ref(),
+			acc,
+			BalancesCall::transfer_keep_alive {
+				dest: self.dest,
+				value: self.value,
+			}
+			.into(),
+			nonce,
+		)
+		.into();
+
+		Ok(extrinsic)
+	}
+}
+
+/// Create a transaction using the given `call`.
+///
+/// Note: Should only be used for benchmarking.
+pub fn create_benchmark_extrinsic(
+	client: &Client,
+	sender: ecdsa::Pair,
+	call: runtime::RuntimeCall,
+	nonce: u32,
+) -> runtime::UncheckedExtrinsic {
+	let genesis_hash = client
+		.block_hash(0)
+		.ok()
+		.flatten()
+		.expect("Genesis block exists; qed");
+	let best_hash = client.chain_info().best_hash;
+	let best_block = client.chain_info().best_number;
+
+	let period = runtime::BlockHashCount::get()
+		.checked_next_power_of_two()
+		.map(|c| c / 2)
+		.unwrap_or(2) as u64;
+	let extra: runtime::SignedExtra = (
+		frame_system::CheckNonZeroSender::<runtime::Runtime>::new(),
+		frame_system::CheckSpecVersion::<runtime::Runtime>::new(),
+		frame_system::CheckTxVersion::<runtime::Runtime>::new(),
+		frame_system::CheckGenesis::<runtime::Runtime>::new(),
+		frame_system::CheckMortality::<runtime::Runtime>::from(Era::mortal(
+			period,
+			best_block.saturated_into(),
+		)),
+		frame_system::CheckNonce::<runtime::Runtime>::from(nonce),
+		frame_system::CheckWeight::<runtime::Runtime>::new(),
+		pallet_transaction_payment::ChargeTransactionPayment::<runtime::Runtime>::from(0),
+	);
+
+	let raw_payload = runtime::SignedPayload::from_raw(
+		call.clone(),
+		extra.clone(),
+		(
+			(),
+			runtime::VERSION.spec_version,
+			runtime::VERSION.transaction_version,
+			genesis_hash,
+			best_hash,
+			(),
+			(),
+			(),
+		),
+	);
+	let signature = raw_payload.using_encoded(|e| sender.sign(e));
+
+	runtime::UncheckedExtrinsic::new_signed(
+		call,
+		AccountId20::from(sender.public()),
+		runtime::Signature::new(signature),
+		extra,
+	)
+}
+
+/// Generates inherent data for the `benchmark overhead` command.
+///
+/// Note: Should only be used for benchmarking.
+pub fn inherent_benchmark_data() -> Result<InherentData> {
+	let mut inherent_data = InherentData::new();
+	let d = Duration::from_millis(0);
+	let timestamp = sp_timestamp::InherentDataProvider::new(d.into());
+
+	futures::executor::block_on(timestamp.provide_inherent_data(&mut inherent_data))
+		.map_err(|e| format!("creating inherent data: {:?}", e))?;
+	Ok(inherent_data)
+}
diff --git a/node/src/chain_spec.rs b/node/src/chain_spec.rs
new file mode 100644
index 0000000..48aceba
--- /dev/null
+++ b/node/src/chain_spec.rs
@@ -0,0 +1,215 @@
+use std::{collections::BTreeMap, str::FromStr};
+
+use hex_literal::hex;
+use pallet_im_online::sr25519::AuthorityId as ImOnlineId;
+// Substrate
+use sc_chain_spec::{ChainType, Properties};
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+use sp_consensus_grandpa::AuthorityId as GrandpaId;
+use sp_core::{H160, Pair, Public, U256};
+#[allow(unused_imports)]
+use sp_core::ecdsa;
+use sp_runtime::traits::{IdentifyAccount, Verify};
+
+// Frontier
+use aya_runtime::{
+    AccountId, Balance, opaque::SessionKeys, RuntimeGenesisConfig, Signature, SS58Prefix,
+    WASM_BINARY,
+};
+
+// The URL for the telemetry server.
+// const STAGING_TELEMETRY_URL: &str = "wss://telemetry.polkadot.io/submit/";
+
+/// Specialized `ChainSpec`. This is a specialization of the general Substrate ChainSpec type.
+pub type ChainSpec = sc_service::GenericChainSpec<RuntimeGenesisConfig>;
+
+const PROTOCOL_ID: &str = "aya";
+const TOKEN_SYMBOL: &str = "FERN";
+
+/// Generate a crypto pair from seed.
+pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {
+    TPublic::Pair::from_string(&format!("//{}", seed), None)
+        .expect("static values are valid; qed")
+        .public()
+}
+
+#[allow(dead_code)]
+type AccountPublic = <Signature as Verify>::Signer;
+
+/// Generate an account ID from seed.
+/// For use with `AccountId32`, `dead_code` if `AccountId20`.
+#[allow(dead_code)]
+pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId
+where
+    AccountPublic: From<<TPublic::Pair as Pair>::Public>,
+{
+    AccountPublic::from(get_from_seed::<TPublic>(seed)).into_account()
+}
+
+fn session_keys(aura: AuraId, grandpa: GrandpaId, im_online: ImOnlineId) -> SessionKeys {
+    SessionKeys {
+        aura,
+        grandpa,
+        im_online,
+    }
+}
+
+pub fn authority_keys_from_seed(s: &str, a: AccountId) -> (AccountId, AuraId, GrandpaId, ImOnlineId) {
+    (
+        a,
+        get_from_seed::<AuraId>(s),
+        get_from_seed::<GrandpaId>(s),
+        get_from_seed::<ImOnlineId>(s),
+    )
+}
+
+fn properties() -> Properties {
+    let mut properties = Properties::new();
+    properties.insert("isEthereum".into(), true.into());
+    properties.insert("tokenDecimals".into(), 18.into());
+    properties.insert("ss58Format".into(), SS58Prefix::get().into());
+    properties.insert("tokenSymbol".to_string(), TOKEN_SYMBOL.into());
+    properties
+}
+
+const UNITS: Balance = 1_000_000_000_000_000_000;
+
+pub fn development_config(enable_manual_seal: bool) -> ChainSpec {
+    ChainSpec::builder(WASM_BINARY.expect("WASM not available"), Default::default())
+        .with_name("Development")
+        .with_id("dev")
+        .with_chain_type(ChainType::Development)
+        .with_properties(properties())
+        .with_genesis_config_patch(testnet_genesis(
+            // Sudo account (Alith)
+            AccountId::from(hex!("f24FF3a9CF04c71Dbc94D0b566f7A27B94566cac")),
+            // Pre-funded accounts
+            vec![
+                AccountId::from(hex!("f24FF3a9CF04c71Dbc94D0b566f7A27B94566cac")), // Alith
+                AccountId::from(hex!("3Cd0A705a2DC65e5b1E1205896BaA2be8A07c6e0")), // Baltathar
+                AccountId::from(hex!("798d4Ba9baf0064Ec19eB4F0a1a45785ae9D6DFc")), // Charleth
+                AccountId::from(hex!("773539d4Ac0e786233D90A233654ccEE26a613D9")), // Dorothy
+                AccountId::from(hex!("Ff64d3F6efE2317EE2807d223a0Bdc4c0c49dfDB")), // Ethan
+                AccountId::from(hex!("C0F0f4ab324C46e55D02D0033343B4Be8A55532d")), // Faith
+            ],
+            // Initial PoA authorities
+            vec![authority_keys_from_seed(
+                "Alice",
+                AccountId::from(hex!("f24FF3a9CF04c71Dbc94D0b566f7A27B94566cac")),
+            )],
+            // Ethereum chain ID
+            SS58Prefix::get() as u64,
+            enable_manual_seal,
+        ))
+        .with_protocol_id(PROTOCOL_ID)
+        .build()
+}
+
+pub fn local_testnet_config() -> ChainSpec {
+    ChainSpec::builder(WASM_BINARY.expect("WASM not available"), Default::default())
+        .with_name("Local Testnet")
+        .with_id("local_testnet")
+        .with_chain_type(ChainType::Local)
+        .with_properties(properties())
+        .with_genesis_config_patch(testnet_genesis(
+            // Sudo account (Alith)
+            AccountId::from(hex!("f24FF3a9CF04c71Dbc94D0b566f7A27B94566cac")),
+            // Pre-funded accounts
+            vec![
+                AccountId::from(hex!("f24FF3a9CF04c71Dbc94D0b566f7A27B94566cac")), // Alith
+                AccountId::from(hex!("3Cd0A705a2DC65e5b1E1205896BaA2be8A07c6e0")), // Baltathar
+                AccountId::from(hex!("798d4Ba9baf0064Ec19eB4F0a1a45785ae9D6DFc")), // Charleth
+                AccountId::from(hex!("773539d4Ac0e786233D90A233654ccEE26a613D9")), // Dorothy
+                AccountId::from(hex!("Ff64d3F6efE2317EE2807d223a0Bdc4c0c49dfDB")), // Ethan
+                AccountId::from(hex!("C0F0f4ab324C46e55D02D0033343B4Be8A55532d")), // Faith
+            ],
+            vec![
+                authority_keys_from_seed(
+                    "Alice",
+                    AccountId::from(hex!("f24FF3a9CF04c71Dbc94D0b566f7A27B94566cac")),
+                ),
+                authority_keys_from_seed(
+                    "Bob",
+                    AccountId::from(hex!("3Cd0A705a2DC65e5b1E1205896BaA2be8A07c6e0")),
+                ),
+            ],
+            1357,
+            false,
+        ))
+        .with_protocol_id(PROTOCOL_ID)
+        .build()
+}
+
+/// Configure initial storage state for FRAME modules.
+fn testnet_genesis(
+    sudo_key: AccountId,
+    endowed_accounts: Vec<AccountId>,
+    initial_authorities: Vec<(AccountId, AuraId, GrandpaId, ImOnlineId)>,
+    chain_id: u64,
+    enable_manual_seal: bool,
+) -> serde_json::Value {
+    let evm_accounts = {
+        let mut map = BTreeMap::new();
+        map.insert(
+            // H160 address of Alice dev account
+            // Derived from SS58 (42 prefix) address
+            // SS58: 5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY
+            // hex: 0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d
+            // Using the full hex key, truncating to the first 20 bytes (the first 40 hex chars)
+            H160::from_str("d43593c715fdd31c61141abd04a99fd6822c8558")
+                .expect("internal H160 is valid; qed"),
+            fp_evm::GenesisAccount {
+                balance: U256::from_str("0xffffffffffffffffffffffffffffffff")
+                    .expect("internal U256 is valid; qed"),
+                code: Default::default(),
+                nonce: Default::default(),
+                storage: Default::default(),
+            },
+        );
+        map.insert(
+            // H160 address of CI test runner account
+            H160::from_str("6be02d1d3665660d22ff9624b7be0551ee1ac91b")
+                .expect("internal H160 is valid; qed"),
+            fp_evm::GenesisAccount {
+                balance: U256::from_str("0xffffffffffffffffffffffffffffffff")
+                    .expect("internal U256 is valid; qed"),
+                code: Default::default(),
+                nonce: Default::default(),
+                storage: Default::default(),
+            },
+        );
+        map.insert(
+            // H160 address for benchmark usage
+            H160::from_str("1000000000000000000000000000000000000001")
+                .expect("internal H160 is valid; qed"),
+            fp_evm::GenesisAccount {
+                nonce: U256::from(1),
+                balance: U256::from(1_000_000_000_000_000_000_000_000u128),
+                storage: Default::default(),
+                code: vec![0x00],
+            },
+        );
+        map
+    };
+
+    serde_json::json!({
+        "sudo": { "key": Some(sudo_key) },
+        "balances": {
+            "balances": endowed_accounts
+                .iter()
+                .cloned()
+                .map(|k| (k, 1_000_000 * UNITS))
+                .collect::<Vec<_>>()
+        },
+        "validatorSet" : { "initialValidators" : initial_authorities.iter().map(|x| x.0.clone()).collect::<Vec<_>>(), },
+        "session" : { "keys": initial_authorities.iter().map(|x| {
+            (x.0.clone(), x.0.clone(), session_keys(x.1.clone(), x.2.clone(), x.3.clone()))
+        }).collect::<Vec<_>>(),},
+        "aura": { "authorities": [] },
+        "grandpa": { "authorities": [] },
+        "imOnline": { "keys": [] },
+        "evmChainId": { "chainId": chain_id },
+        "evm": { "accounts": evm_accounts },
+        "manualSeal": { "enable": enable_manual_seal }
+    })
+}
diff --git a/node/src/cli.rs b/node/src/cli.rs
new file mode 100644
index 0000000..fcae8cf
--- /dev/null
+++ b/node/src/cli.rs
@@ -0,0 +1,68 @@
+use crate::service::EthConfiguration;
+
+/// Available Sealing methods.
+#[derive(Copy, Clone, Debug, Default, clap::ValueEnum)]
+pub enum Sealing {
+	/// Seal using rpc method.
+	#[default]
+	Manual,
+	/// Seal when transaction is executed.
+	Instant,
+}
+
+#[derive(Debug, clap::Parser)]
+pub struct Cli {
+	#[command(subcommand)]
+	pub subcommand: Option<Subcommand>,
+
+	#[allow(missing_docs)]
+	#[command(flatten)]
+	pub run: sc_cli::RunCmd,
+
+	/// Choose sealing method.
+	#[arg(long, value_enum, ignore_case = true)]
+	pub sealing: Option<Sealing>,
+
+	#[command(flatten)]
+	pub eth: EthConfiguration,
+}
+
+#[derive(Debug, clap::Subcommand)]
+pub enum Subcommand {
+	/// Key management cli utilities
+	#[command(subcommand)]
+	Key(sc_cli::KeySubcommand),
+
+	/// Build a chain specification.
+	BuildSpec(sc_cli::BuildSpecCmd),
+
+	/// Validate blocks.
+	CheckBlock(sc_cli::CheckBlockCmd),
+
+	/// Export blocks.
+	ExportBlocks(sc_cli::ExportBlocksCmd),
+
+	/// Export the state of a given block into a chain spec.
+	ExportState(sc_cli::ExportStateCmd),
+
+	/// Import blocks.
+	ImportBlocks(sc_cli::ImportBlocksCmd),
+
+	/// Remove the whole chain.
+	PurgeChain(sc_cli::PurgeChainCmd),
+
+	/// Revert the chain to a previous state.
+	Revert(sc_cli::RevertCmd),
+
+	/// Sub-commands concerned with benchmarking.
+	#[cfg(feature = "runtime-benchmarks")]
+	#[command(subcommand)]
+	Benchmark(frame_benchmarking_cli::BenchmarkCmd),
+
+	/// Sub-commands concerned with benchmarking.
+	#[cfg(not(feature = "runtime-benchmarks"))]
+	Benchmark,
+
+	/// Db meta columns information.
+	FrontierDb(fc_cli::FrontierDbCmd),
+}
diff --git a/node/src/client.rs b/node/src/client.rs
new file mode 100644
index 0000000..b57b173
--- /dev/null
+++ b/node/src/client.rs
@@ -0,0 +1,77 @@
+// Substrate
+use sc_executor::{NativeElseWasmExecutor, NativeExecutionDispatch, NativeVersion};
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+// Local
+use aya_runtime::{opaque::Block, AccountId, Balance, Nonce};
+
+use crate::eth::EthCompatRuntimeApiCollection;
+
+/// Full backend.
+pub type FullBackend = sc_service::TFullBackend<Block>;
+/// Full client.
+pub type FullClient<RuntimeApi, Executor> =
+	sc_service::TFullClient<Block, RuntimeApi, NativeElseWasmExecutor<Executor>>;
+
+pub type Client = FullClient<aya_runtime::RuntimeApi, TemplateRuntimeExecutor>;
+
+/// Only enable the benchmarking host functions when we actually want to benchmark.
+#[cfg(feature = "runtime-benchmarks")]
+pub type HostFunctions = frame_benchmarking::benchmarking::HostFunctions;
+/// Otherwise we use empty host functions for ext host functions.
+#[cfg(not(feature = "runtime-benchmarks"))]
+pub type HostFunctions = ();
+
+pub struct TemplateRuntimeExecutor;
+impl NativeExecutionDispatch for TemplateRuntimeExecutor {
+	type ExtendHostFunctions = HostFunctions;
+
+	fn dispatch(method: &str, data: &[u8]) -> Option<Vec<u8>> {
+		aya_runtime::api::dispatch(method, data)
+	}
+
+	fn native_version() -> NativeVersion {
+		aya_runtime::native_version()
+	}
+}
+
+/// A set of APIs that every runtimes must implement.
+pub trait BaseRuntimeApiCollection:
+	sp_api::ApiExt<Block>
+	+ sp_api::Metadata<Block>
+	+ sp_block_builder::BlockBuilder<Block>
+	+ sp_offchain::OffchainWorkerApi<Block>
+	+ sp_session::SessionKeys<Block>
+	+ sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block>
+{
+}
+
+impl<Api> BaseRuntimeApiCollection for Api where
+	Api: sp_api::ApiExt<Block>
+		+ sp_api::Metadata<Block>
+		+ sp_block_builder::BlockBuilder<Block>
+		+ sp_offchain::OffchainWorkerApi<Block>
+		+ sp_session::SessionKeys<Block>
+		+ sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block>
+{
+}
+
+/// A set of APIs that template runtime must implement.
+pub trait RuntimeApiCollection:
+	BaseRuntimeApiCollection
+	+ EthCompatRuntimeApiCollection
+	+ sp_consensus_aura::AuraApi<Block, AuraId>
+	+ sp_consensus_grandpa::GrandpaApi<Block>
+	+ frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce>
+	+ pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<Block, Balance>
+{
+}
+
+impl<Api> RuntimeApiCollection for Api where
+	Api: BaseRuntimeApiCollection
+		+ EthCompatRuntimeApiCollection
+		+ sp_consensus_aura::AuraApi<Block, AuraId>
+		+ sp_consensus_grandpa::GrandpaApi<Block>
+		+ frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce>
+		+ pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<Block, Balance>
+{
+}
diff --git a/node/src/command.rs b/node/src/command.rs
new file mode 100644
index 0000000..b60277b
--- /dev/null
+++ b/node/src/command.rs
@@ -0,0 +1,254 @@
+// This file is part of Substrate.
+
+// Copyright (C) 2017-2021 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use futures::TryFutureExt;
+// Substrate
+use sc_cli::{ChainSpec, SubstrateCli};
+use sc_service::DatabaseSource;
+// Frontier
+use fc_db::kv::frontier_database_dir;
+
+use crate::{
+	chain_spec,
+	cli::{Cli, Subcommand},
+	service::{self, db_config_dir},
+};
+
+#[cfg(feature = "runtime-benchmarks")]
+use crate::chain_spec::get_account_id_from_seed;
+
+impl SubstrateCli for Cli {
+	fn impl_name() -> String {
+		"AyA Node".into()
+	}
+
+	fn impl_version() -> String {
+		env!("SUBSTRATE_CLI_IMPL_VERSION").into()
+	}
+
+	fn description() -> String {
+		env!("CARGO_PKG_DESCRIPTION").into()
+	}
+
+	fn author() -> String {
+		env!("CARGO_PKG_AUTHORS").into()
+	}
+
+	fn support_url() -> String {
+		"support.anonymous.an".into()
+	}
+
+	fn copyright_start_year() -> i32 {
+		2021
+	}
+
+	fn load_spec(&self, id: &str) -> Result<Box<dyn ChainSpec>, String> {
+		Ok(match id {
+			"dev" => {
+				let enable_manual_seal = self.sealing.map(|_| true).unwrap_or_default();
+				Box::new(chain_spec::development_config(enable_manual_seal))
+			}
+			"" | "local" => Box::new(chain_spec::local_testnet_config()),
+			path => Box::new(chain_spec::ChainSpec::from_json_file(
+				std::path::PathBuf::from(path),
+			)?),
+		})
+	}
+}
+
+/// Parse and run command line arguments
+pub fn run() -> sc_cli::Result<()> {
+	let cli = Cli::from_args();
+
+	match &cli.subcommand {
+		Some(Subcommand::Key(cmd)) => cmd.run(&cli),
+		Some(Subcommand::BuildSpec(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.sync_run(|config| cmd.run(config.chain_spec, config.network))
+		}
+		Some(Subcommand::CheckBlock(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|mut config| {
+				let (client, _, import_queue, task_manager, _) =
+					service::new_chain_ops(&mut config, &cli.eth)?;
+				Ok((cmd.run(client, import_queue), task_manager))
+			})
+		}
+		Some(Subcommand::ExportBlocks(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|mut config| {
+				let (client, _, _, task_manager, _) =
+					service::new_chain_ops(&mut config, &cli.eth)?;
+				Ok((cmd.run(client, config.database), task_manager))
+			})
+		}
+		Some(Subcommand::ExportState(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|mut config| {
+				let (client, _, _, task_manager, _) =
+					service::new_chain_ops(&mut config, &cli.eth)?;
+				Ok((cmd.run(client, config.chain_spec), task_manager))
+			})
+		}
+		Some(Subcommand::ImportBlocks(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|mut config| {
+				let (client, _, import_queue, task_manager, _) =
+					service::new_chain_ops(&mut config, &cli.eth)?;
+				Ok((cmd.run(client, import_queue), task_manager))
+			})
+		}
+		Some(Subcommand::PurgeChain(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.sync_run(|config| {
+				// Remove Frontier offchain db
+				let db_config_dir = db_config_dir(&config);
+				match cli.eth.frontier_backend_type {
+					crate::eth::BackendType::KeyValue => {
+						let frontier_database_config = match config.database {
+							DatabaseSource::RocksDb { .. } => DatabaseSource::RocksDb {
+								path: frontier_database_dir(&db_config_dir, "db"),
+								cache_size: 0,
+							},
+							DatabaseSource::ParityDb { .. } => DatabaseSource::ParityDb {
+								path: frontier_database_dir(&db_config_dir, "paritydb"),
+							},
+							_ => {
+								return Err(format!(
+									"Cannot purge `{:?}` database",
+									config.database
+								)
+								.into())
+							}
+						};
+						cmd.run(frontier_database_config)?;
+					}
+					crate::eth::BackendType::Sql => {
+						let db_path = db_config_dir.join("sql");
+						match std::fs::remove_dir_all(&db_path) {
+							Ok(_) => {
+								println!("{:?} removed.", &db_path);
+							}
+							Err(ref err) if err.kind() == std::io::ErrorKind::NotFound => {
+								eprintln!("{:?} did not exist.", &db_path);
+							}
+							Err(err) => {
+								return Err(format!(
+									"Cannot purge `{:?}` database: {:?}",
+									db_path, err,
+								)
+								.into())
+							}
+						};
+					}
+				};
+				cmd.run(config.database)
+			})
+		}
+		Some(Subcommand::Revert(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|mut config| {
+				let (client, backend, _, task_manager, _) =
+					service::new_chain_ops(&mut config, &cli.eth)?;
+				let aux_revert = Box::new(move |client, _, blocks| {
+					sc_consensus_grandpa::revert(client, blocks)?;
+					Ok(())
+				});
+				Ok((cmd.run(client, backend, Some(aux_revert)), task_manager))
+			})
+		}
+		#[cfg(feature = "runtime-benchmarks")]
+		Some(Subcommand::Benchmark(cmd)) => {
+			use crate::benchmarking::{
+				inherent_benchmark_data, RemarkBuilder, TransferKeepAliveBuilder,
+			};
+			use frame_benchmarking_cli::{
+				BenchmarkCmd, ExtrinsicFactory, SUBSTRATE_REFERENCE_HARDWARE,
+			};
+			use aya_runtime::{ExistentialDeposit, Hashing};
+
+			let runner = cli.create_runner(cmd)?;
+			match cmd {
+				BenchmarkCmd::Pallet(cmd) => {
+					runner.sync_run(|config| cmd.run::<Hashing, ()>(config))
+				}
+				BenchmarkCmd::Block(cmd) => runner.sync_run(|mut config| {
+					let (client, _, _, _, _) = service::new_chain_ops(&mut config, &cli.eth)?;
+					cmd.run(client)
+				}),
+				BenchmarkCmd::Storage(cmd) => runner.sync_run(|mut config| {
+					let (client, backend, _, _, _) = service::new_chain_ops(&mut config, &cli.eth)?;
+					let db = backend.expose_db();
+					let storage = backend.expose_storage();
+					cmd.run(config, client, db, storage)
+				}),
+				BenchmarkCmd::Overhead(cmd) => runner.sync_run(|mut config| {
+					let (client, _, _, _, _) = service::new_chain_ops(&mut config, &cli.eth)?;
+					let ext_builder = RemarkBuilder::new(client.clone());
+					cmd.run(
+						config,
+						client,
+						inherent_benchmark_data()?,
+						Vec::new(),
+						&ext_builder,
+					)
+				}),
+				BenchmarkCmd::Extrinsic(cmd) => runner.sync_run(|mut config| {
+					let (client, _, _, _, _) = service::new_chain_ops(&mut config, &cli.eth)?;
+					// Register the *Remark* and *TKA* builders.
+					let ext_factory = ExtrinsicFactory(vec![
+						Box::new(RemarkBuilder::new(client.clone())),
+						Box::new(TransferKeepAliveBuilder::new(
+							client.clone(),
+							get_account_id_from_seed::<sp_core::ecdsa::Public>("Alice"),
+							ExistentialDeposit::get(),
+						)),
+					]);
+
+					cmd.run(client, inherent_benchmark_data()?, Vec::new(), &ext_factory)
+				}),
+				BenchmarkCmd::Machine(cmd) => {
+					runner.sync_run(|config| cmd.run(&config, SUBSTRATE_REFERENCE_HARDWARE.clone()))
+				}
+			}
+		}
+		#[cfg(not(feature = "runtime-benchmarks"))]
+		Some(Subcommand::Benchmark) => Err("Benchmarking wasn't enabled when building the node. \
+			You can enable it with `--features runtime-benchmarks`."
+			.into()),
+		Some(Subcommand::FrontierDb(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.sync_run(|mut config| {
+				let (client, _, _, _, frontier_backend) =
+					service::new_chain_ops(&mut config, &cli.eth)?;
+				let frontier_backend = match frontier_backend {
+					fc_db::Backend::KeyValue(kv) => std::sync::Arc::new(kv),
+					_ => panic!("Only fc_db::Backend::KeyValue supported"),
+				};
+				cmd.run(client, frontier_backend)
+			})
+		}
+		None => {
+			let runner = cli.create_runner(&cli.run)?;
+			runner.run_node_until_exit(|config| async move {
+				service::build_full(config, cli.eth, cli.sealing)
+					.map_err(Into::into)
+					.await
+			})
+		}
+	}
+}
diff --git a/node/src/eth.rs b/node/src/eth.rs
new file mode 100644
index 0000000..e4998d2
--- /dev/null
+++ b/node/src/eth.rs
@@ -0,0 +1,211 @@
+use std::{
+	collections::BTreeMap,
+	path::PathBuf,
+	sync::{Arc, Mutex},
+	time::Duration,
+};
+
+use futures::{future, prelude::*};
+// Substrate
+use sc_client_api::BlockchainEvents;
+use sc_executor::NativeExecutionDispatch;
+use sc_network_sync::SyncingService;
+use sc_service::{error::Error as ServiceError, Configuration, TaskManager};
+use sp_api::ConstructRuntimeApi;
+// Frontier
+pub use fc_consensus::FrontierBlockImport;
+use fc_rpc::{EthTask, OverrideHandle};
+pub use fc_rpc_core::types::{FeeHistoryCache, FeeHistoryCacheLimit, FilterPool};
+// Local
+use aya_runtime::opaque::Block;
+
+use crate::client::{FullBackend, FullClient};
+
+/// Frontier DB backend type.
+pub type FrontierBackend = fc_db::Backend<Block>;
+
+pub fn db_config_dir(config: &Configuration) -> PathBuf {
+	config.base_path.config_dir(config.chain_spec.id())
+}
+
+/// Avalailable frontier backend types.
+#[derive(Debug, Copy, Clone, Default, clap::ValueEnum)]
+pub enum BackendType {
+	/// Either RocksDb or ParityDb as per inherited from the global backend settings.
+	#[default]
+	KeyValue,
+	/// Sql database with custom log indexing.
+	Sql,
+}
+
+/// The ethereum-compatibility configuration used to run a node.
+#[derive(Clone, Debug, clap::Parser)]
+pub struct EthConfiguration {
+	/// Maximum number of logs in a query.
+	#[arg(long, default_value = "10000")]
+	pub max_past_logs: u32,
+
+	/// Maximum fee history cache size.
+	#[arg(long, default_value = "2048")]
+	pub fee_history_limit: u64,
+
+	#[arg(long)]
+	pub enable_dev_signer: bool,
+
+	/// The dynamic-fee pallet target gas price set by block author
+	#[arg(long, default_value = "1")]
+	pub target_gas_price: u64,
+
+	/// Maximum allowed gas limit will be `block.gas_limit * execute_gas_limit_multiplier`
+	/// when using eth_call/eth_estimateGas.
+	#[arg(long, default_value = "10")]
+	pub execute_gas_limit_multiplier: u64,
+
+	/// Size in bytes of the LRU cache for block data.
+	#[arg(long, default_value = "50")]
+	pub eth_log_block_cache: usize,
+
+	/// Size in bytes of the LRU cache for transactions statuses data.
+	#[arg(long, default_value = "50")]
+	pub eth_statuses_cache: usize,
+
+	/// Sets the frontier backend type (KeyValue or Sql)
+	#[arg(long, value_enum, ignore_case = true, default_value_t = BackendType::default())]
+	pub frontier_backend_type: BackendType,
+
+	// Sets the SQL backend's pool size.
+	#[arg(long, default_value = "100")]
+	pub frontier_sql_backend_pool_size: u32,
+
+	/// Sets the SQL backend's query timeout in number of VM ops.
+	#[arg(long, default_value = "10000000")]
+	pub frontier_sql_backend_num_ops_timeout: u32,
+
+	/// Sets the SQL backend's auxiliary thread limit.
+	#[arg(long, default_value = "4")]
+	pub frontier_sql_backend_thread_count: u32,
+
+	/// Sets the SQL backend's query timeout in number of VM ops.
+	/// Default value is 200MB.
+	#[arg(long, default_value = "209715200")]
+	pub frontier_sql_backend_cache_size: u64,
+}
+
+pub struct FrontierPartialComponents {
+	pub filter_pool: Option<FilterPool>,
+	pub fee_history_cache: FeeHistoryCache,
+	pub fee_history_cache_limit: FeeHistoryCacheLimit,
+}
+
+pub fn new_frontier_partial(
+	config: &EthConfiguration,
+) -> Result<FrontierPartialComponents, ServiceError> {
+	Ok(FrontierPartialComponents {
+		filter_pool: Some(Arc::new(Mutex::new(BTreeMap::new()))),
+		fee_history_cache: Arc::new(Mutex::new(BTreeMap::new())),
+		fee_history_cache_limit: config.fee_history_limit,
+	})
+}
+
+/// A set of APIs that ethereum-compatible runtimes must implement.
+pub trait EthCompatRuntimeApiCollection:
+	sp_api::ApiExt<Block>
+	+ fp_rpc::ConvertTransactionRuntimeApi<Block>
+	+ fp_rpc::EthereumRuntimeRPCApi<Block>
+{
+}
+
+impl<Api> EthCompatRuntimeApiCollection for Api where
+	Api: sp_api::ApiExt<Block>
+		+ fp_rpc::ConvertTransactionRuntimeApi<Block>
+		+ fp_rpc::EthereumRuntimeRPCApi<Block>
+{
+}
+
+pub async fn spawn_frontier_tasks<RuntimeApi, Executor>(
+	task_manager: &TaskManager,
+	client: Arc<FullClient<RuntimeApi, Executor>>,
+	backend: Arc<FullBackend>,
+	frontier_backend: FrontierBackend,
+	filter_pool: Option<FilterPool>,
+	overrides: Arc<OverrideHandle<Block>>,
+	fee_history_cache: FeeHistoryCache,
+	fee_history_cache_limit: FeeHistoryCacheLimit,
+	sync: Arc<SyncingService<Block>>,
+	pubsub_notification_sinks: Arc<
+		fc_mapping_sync::EthereumBlockNotificationSinks<
+			fc_mapping_sync::EthereumBlockNotification<Block>,
+		>,
+	>,
+) where
+	RuntimeApi: ConstructRuntimeApi<Block, FullClient<RuntimeApi, Executor>>,
+	RuntimeApi: Send + Sync + 'static,
+	RuntimeApi::RuntimeApi: EthCompatRuntimeApiCollection,
+	Executor: NativeExecutionDispatch + 'static,
+{
+	// Spawn main mapping sync worker background task.
+	match frontier_backend {
+		fc_db::Backend::KeyValue(b) => {
+			task_manager.spawn_essential_handle().spawn(
+				"frontier-mapping-sync-worker",
+				Some("frontier"),
+				fc_mapping_sync::kv::MappingSyncWorker::new(
+					client.import_notification_stream(),
+					Duration::new(6, 0),
+					client.clone(),
+					backend,
+					overrides.clone(),
+					Arc::new(b),
+					3,
+					0,
+					fc_mapping_sync::SyncStrategy::Normal,
+					sync,
+					pubsub_notification_sinks,
+				)
+				.for_each(|()| future::ready(())),
+			);
+		}
+		fc_db::Backend::Sql(b) => {
+			task_manager.spawn_essential_handle().spawn_blocking(
+				"frontier-mapping-sync-worker",
+				Some("frontier"),
+				fc_mapping_sync::sql::SyncWorker::run(
+					client.clone(),
+					backend,
+					Arc::new(b),
+					client.import_notification_stream(),
+					fc_mapping_sync::sql::SyncWorkerConfig {
+						read_notification_timeout: Duration::from_secs(10),
+						check_indexed_blocks_interval: Duration::from_secs(60),
+					},
+					fc_mapping_sync::SyncStrategy::Parachain,
+					sync,
+					pubsub_notification_sinks,
+				),
+			);
+		}
+	}
+
+	// Spawn Frontier EthFilterApi maintenance task.
+	if let Some(filter_pool) = filter_pool {
+		// Each filter is allowed to stay in the pool for 100 blocks.
+		const FILTER_RETAIN_THRESHOLD: u64 = 100;
+		task_manager.spawn_essential_handle().spawn(
+			"frontier-filter-pool",
+			Some("frontier"),
+			EthTask::filter_pool_task(client.clone(), filter_pool, FILTER_RETAIN_THRESHOLD),
+		);
+	}
+
+	// Spawn Frontier FeeHistory cache maintenance task.
+	task_manager.spawn_essential_handle().spawn(
+		"frontier-fee-history",
+		Some("frontier"),
+		EthTask::fee_history_task(
+			client,
+			overrides,
+			fee_history_cache,
+			fee_history_cache_limit,
+		),
+	);
+}
diff --git a/node/src/main.rs b/node/src/main.rs
new file mode 100644
index 0000000..0bb5dad
--- /dev/null
+++ b/node/src/main.rs
@@ -0,0 +1,23 @@
+//! Substrate Node Template CLI library.
+
+#![warn(missing_docs)]
+#![allow(
+	clippy::type_complexity,
+	clippy::too_many_arguments,
+	clippy::large_enum_variant
+)]
+#![cfg_attr(feature = "runtime-benchmarks", warn(unused_crate_dependencies))]
+
+#[cfg(feature = "runtime-benchmarks")]
+mod benchmarking;
+mod chain_spec;
+mod cli;
+mod client;
+mod command;
+mod eth;
+mod rpc;
+mod service;
+
+fn main() -> sc_cli::Result<()> {
+	command::run()
+}
diff --git a/node/src/rpc/eth.rs b/node/src/rpc/eth.rs
new file mode 100644
index 0000000..29e15a2
--- /dev/null
+++ b/node/src/rpc/eth.rs
@@ -0,0 +1,206 @@
+use std::{collections::BTreeMap, sync::Arc};
+
+use jsonrpsee::RpcModule;
+// Substrate
+use sc_client_api::{
+	backend::{Backend, StorageProvider},
+	client::BlockchainEvents,
+	AuxStore, UsageProvider,
+};
+use sc_network::NetworkService;
+use sc_network_sync::SyncingService;
+use sc_rpc::SubscriptionTaskExecutor;
+use sc_transaction_pool::{ChainApi, Pool};
+use sc_transaction_pool_api::TransactionPool;
+use sp_api::{CallApiAt, ProvideRuntimeApi};
+use sp_block_builder::BlockBuilder as BlockBuilderApi;
+use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata};
+use sp_consensus_aura::{sr25519::AuthorityId as AuraId, AuraApi};
+use sp_core::H256;
+use sp_inherents::CreateInherentDataProviders;
+use sp_runtime::traits::Block as BlockT;
+// Frontier
+pub use fc_rpc::{EthBlockDataCacheTask, EthConfig, OverrideHandle};
+pub use fc_rpc_core::types::{FeeHistoryCache, FeeHistoryCacheLimit, FilterPool};
+pub use fc_storage::overrides_handle;
+use fp_rpc::{ConvertTransaction, ConvertTransactionRuntimeApi, EthereumRuntimeRPCApi};
+
+/// Extra dependencies for Ethereum compatibility.
+pub struct EthDeps<B: BlockT, C, P, A: ChainApi, CT, CIDP> {
+	/// The client instance to use.
+	pub client: Arc<C>,
+	/// Transaction pool instance.
+	pub pool: Arc<P>,
+	/// Graph pool instance.
+	pub graph: Arc<Pool<A>>,
+	/// Ethereum transaction converter.
+	pub converter: Option<CT>,
+	/// The Node authority flag
+	pub is_authority: bool,
+	/// Whether to enable dev signer
+	pub enable_dev_signer: bool,
+	/// Network service
+	pub network: Arc<NetworkService<B, B::Hash>>,
+	/// Chain syncing service
+	pub sync: Arc<SyncingService<B>>,
+	/// Frontier Backend.
+	pub frontier_backend: Arc<dyn fc_api::Backend<B>>,
+	/// Ethereum data access overrides.
+	pub overrides: Arc<OverrideHandle<B>>,
+	/// Cache for Ethereum block data.
+	pub block_data_cache: Arc<EthBlockDataCacheTask<B>>,
+	/// EthFilterApi pool.
+	pub filter_pool: Option<FilterPool>,
+	/// Maximum number of logs in a query.
+	pub max_past_logs: u32,
+	/// Fee history cache.
+	pub fee_history_cache: FeeHistoryCache,
+	/// Maximum fee history cache size.
+	pub fee_history_cache_limit: FeeHistoryCacheLimit,
+	/// Maximum allowed gas limit will be ` block.gas_limit * execute_gas_limit_multiplier` when
+	/// using eth_call/eth_estimateGas.
+	pub execute_gas_limit_multiplier: u64,
+	/// Mandated parent hashes for a given block hash.
+	pub forced_parent_hashes: Option<BTreeMap<H256, H256>>,
+	/// Something that can create the inherent data providers for pending state
+	pub pending_create_inherent_data_providers: CIDP,
+}
+
+/// Instantiate Ethereum-compatible RPC extensions.
+pub fn create_eth<B, C, BE, P, A, CT, CIDP, EC>(
+	mut io: RpcModule<()>,
+	deps: EthDeps<B, C, P, A, CT, CIDP>,
+	subscription_task_executor: SubscriptionTaskExecutor,
+	pubsub_notification_sinks: Arc<
+		fc_mapping_sync::EthereumBlockNotificationSinks<
+			fc_mapping_sync::EthereumBlockNotification<B>,
+		>,
+	>,
+) -> Result<RpcModule<()>, Box<dyn std::error::Error + Send + Sync>>
+where
+	B: BlockT<Hash = H256>,
+	C: CallApiAt<B> + ProvideRuntimeApi<B>,
+	C::Api: AuraApi<B, AuraId>
+		+ BlockBuilderApi<B>
+		+ ConvertTransactionRuntimeApi<B>
+		+ EthereumRuntimeRPCApi<B>,
+	C: HeaderBackend<B> + HeaderMetadata<B, Error = BlockChainError>,
+	C: BlockchainEvents<B> + AuxStore + UsageProvider<B> + StorageProvider<B, BE> + 'static,
+	BE: Backend<B> + 'static,
+	P: TransactionPool<Block = B> + 'static,
+	A: ChainApi<Block = B> + 'static,
+	CT: ConvertTransaction<<B as BlockT>::Extrinsic> + Send + Sync + 'static,
+	CIDP: CreateInherentDataProviders<B, ()> + Send + 'static,
+	EC: EthConfig<B, C>,
+{
+	use fc_rpc::{
+		pending::AuraConsensusDataProvider, Debug, DebugApiServer, Eth, EthApiServer, EthDevSigner,
+		EthFilter, EthFilterApiServer, EthPubSub, EthPubSubApiServer, EthSigner, Net, NetApiServer,
+		Web3, Web3ApiServer,
+	};
+	#[cfg(feature = "txpool")]
+	use fc_rpc::{TxPool, TxPoolApiServer};
+
+	let EthDeps {
+		client,
+		pool,
+		graph,
+		converter,
+		is_authority,
+		enable_dev_signer,
+		network,
+		sync,
+		frontier_backend,
+		overrides,
+		block_data_cache,
+		filter_pool,
+		max_past_logs,
+		fee_history_cache,
+		fee_history_cache_limit,
+		execute_gas_limit_multiplier,
+		forced_parent_hashes,
+		pending_create_inherent_data_providers,
+	} = deps;
+
+	let mut signers = Vec::new();
+	if enable_dev_signer {
+		signers.push(Box::new(EthDevSigner::new()) as Box<dyn EthSigner>);
+	}
+
+	io.merge(
+		Eth::<B, C, P, CT, BE, A, CIDP, EC>::new(
+			client.clone(),
+			pool.clone(),
+			graph.clone(),
+			converter,
+			sync.clone(),
+			signers,
+			overrides.clone(),
+			frontier_backend.clone(),
+			is_authority,
+			block_data_cache.clone(),
+			fee_history_cache,
+			fee_history_cache_limit,
+			execute_gas_limit_multiplier,
+			forced_parent_hashes,
+			pending_create_inherent_data_providers,
+			Some(Box::new(AuraConsensusDataProvider::new(client.clone()))),
+		)
+		.replace_config::<EC>()
+		.into_rpc(),
+	)?;
+
+	if let Some(filter_pool) = filter_pool {
+		io.merge(
+			EthFilter::new(
+				client.clone(),
+				frontier_backend.clone(),
+				graph.clone(),
+				filter_pool,
+				500_usize, // max stored filters
+				max_past_logs,
+				block_data_cache.clone(),
+			)
+			.into_rpc(),
+		)?;
+	}
+
+	io.merge(
+		EthPubSub::new(
+			pool,
+			client.clone(),
+			sync,
+			subscription_task_executor,
+			overrides.clone(),
+			pubsub_notification_sinks,
+		)
+		.into_rpc(),
+	)?;
+
+	io.merge(
+		Net::new(
+			client.clone(),
+			network,
+			// Whether to format the `peer_count` response as Hex (default) or not.
+			true,
+		)
+		.into_rpc(),
+	)?;
+
+	io.merge(Web3::new(client.clone()).into_rpc())?;
+
+	io.merge(
+		Debug::new(
+			client.clone(),
+			frontier_backend,
+			overrides,
+			block_data_cache,
+		)
+		.into_rpc(),
+	)?;
+
+	#[cfg(feature = "txpool")]
+	io.merge(TxPool::new(client, graph).into_rpc())?;
+
+	Ok(io)
+}
diff --git a/node/src/rpc/mod.rs b/node/src/rpc/mod.rs
new file mode 100644
index 0000000..1a4a2b7
--- /dev/null
+++ b/node/src/rpc/mod.rs
@@ -0,0 +1,114 @@
+//! A collection of node-specific RPC methods.
+
+use std::sync::Arc;
+
+use futures::channel::mpsc;
+use jsonrpsee::RpcModule;
+// Substrate
+use sc_client_api::{
+	backend::{Backend, StorageProvider},
+	client::BlockchainEvents,
+	AuxStore, UsageProvider,
+};
+use sc_consensus_manual_seal::rpc::EngineCommand;
+use sc_rpc::SubscriptionTaskExecutor;
+use sc_rpc_api::DenyUnsafe;
+use sc_service::TransactionPool;
+use sc_transaction_pool::ChainApi;
+use sp_api::{CallApiAt, ProvideRuntimeApi};
+use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata};
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+use sp_inherents::CreateInherentDataProviders;
+use sp_runtime::traits::Block as BlockT;
+// Runtime
+use aya_runtime::{opaque::Block, AccountId, Balance, Hash, Nonce};
+
+mod eth;
+pub use self::eth::{create_eth, overrides_handle, EthDeps};
+
+/// Full client dependencies.
+pub struct FullDeps<C, P, A: ChainApi, CT, CIDP> {
+	/// The client instance to use.
+	pub client: Arc<C>,
+	/// Transaction pool instance.
+	pub pool: Arc<P>,
+	/// Whether to deny unsafe calls
+	pub deny_unsafe: DenyUnsafe,
+	/// Manual seal command sink
+	pub command_sink: Option<mpsc::Sender<EngineCommand<Hash>>>,
+	/// Ethereum-compatibility specific dependencies.
+	pub eth: EthDeps<Block, C, P, A, CT, CIDP>,
+}
+
+pub struct DefaultEthConfig<C, BE>(std::marker::PhantomData<(C, BE)>);
+
+impl<C, BE> fc_rpc::EthConfig<Block, C> for DefaultEthConfig<C, BE>
+where
+	C: StorageProvider<Block, BE> + Sync + Send + 'static,
+	BE: Backend<Block> + 'static,
+{
+	type EstimateGasAdapter = ();
+	type RuntimeStorageOverride =
+		fc_rpc::frontier_backend_client::SystemAccountId20StorageOverride<Block, C, BE>;
+}
+
+/// Instantiate all Full RPC extensions.
+pub fn create_full<C, P, BE, A, CT, CIDP>(
+	deps: FullDeps<C, P, A, CT, CIDP>,
+	subscription_task_executor: SubscriptionTaskExecutor,
+	pubsub_notification_sinks: Arc<
+		fc_mapping_sync::EthereumBlockNotificationSinks<
+			fc_mapping_sync::EthereumBlockNotification<Block>,
+		>,
+	>,
+) -> Result<RpcModule<()>, Box<dyn std::error::Error + Send + Sync>>
+where
+	C: CallApiAt<Block> + ProvideRuntimeApi<Block>,
+	C::Api: sp_block_builder::BlockBuilder<Block>,
+	C::Api: sp_consensus_aura::AuraApi<Block, AuraId>,
+	C::Api: substrate_frame_rpc_system::AccountNonceApi<Block, AccountId, Nonce>,
+	C::Api: pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>,
+	C::Api: fp_rpc::ConvertTransactionRuntimeApi<Block>,
+	C::Api: fp_rpc::EthereumRuntimeRPCApi<Block>,
+	C: HeaderBackend<Block> + HeaderMetadata<Block, Error = BlockChainError> + 'static,
+	C: BlockchainEvents<Block> + AuxStore + UsageProvider<Block> + StorageProvider<Block, BE>,
+	BE: Backend<Block> + 'static,
+	P: TransactionPool<Block = Block> + 'static,
+	A: ChainApi<Block = Block> + 'static,
+	CIDP: CreateInherentDataProviders<Block, ()> + Send + 'static,
+	CT: fp_rpc::ConvertTransaction<<Block as BlockT>::Extrinsic> + Send + Sync + 'static,
+{
+	use pallet_transaction_payment_rpc::{TransactionPayment, TransactionPaymentApiServer};
+	use sc_consensus_manual_seal::rpc::{ManualSeal, ManualSealApiServer};
+	use substrate_frame_rpc_system::{System, SystemApiServer};
+
+	let mut io = RpcModule::new(());
+	let FullDeps {
+		client,
+		pool,
+		deny_unsafe,
+		command_sink,
+		eth,
+	} = deps;
+
+	io.merge(System::new(client.clone(), pool, deny_unsafe).into_rpc())?;
+	io.merge(TransactionPayment::new(client).into_rpc())?;
+
+	if let Some(command_sink) = command_sink {
+		io.merge(
+			// We provide the rpc handler with the sending end of the channel to allow the rpc
+			// send EngineCommands to the background block authorship task.
+			ManualSeal::new(command_sink).into_rpc(),
+		)?;
+	}
+
+	// Ethereum compatibility RPCs
+	let io = create_eth::<_, _, _, _, _, _, _, DefaultEthConfig<C, BE>>(
+		io,
+		eth,
+		subscription_task_executor,
+		pubsub_notification_sinks,
+	)?;
+
+	Ok(io)
+}
diff --git a/node/src/service.rs b/node/src/service.rs
new file mode 100644
index 0000000..d3e1969
--- /dev/null
+++ b/node/src/service.rs
@@ -0,0 +1,728 @@
+//! Service and ServiceFactory implementation. Specialized wrapper over substrate service.
+
+use std::{cell::RefCell, path::Path, sync::Arc, time::Duration};
+
+use futures::{channel::mpsc, prelude::*};
+// Substrate
+use prometheus_endpoint::Registry;
+use sc_client_api::{Backend, BlockBackend};
+use sc_consensus::BasicQueue;
+use sc_executor::NativeExecutionDispatch;
+use sc_network_sync::strategy::warp::{WarpSyncParams, WarpSyncProvider};
+use sc_service::{error::Error as ServiceError, Configuration, PartialComponents, TaskManager};
+use sc_telemetry::{Telemetry, TelemetryHandle, TelemetryWorker};
+use sc_transaction_pool_api::OffchainTransactionPoolFactory;
+use sp_api::ConstructRuntimeApi;
+use sp_consensus_aura::sr25519::AuthorityPair as AuraPair;
+use sp_core::U256;
+// Runtime
+use aya_runtime::{opaque::Block, Hash, TransactionConverter};
+
+use crate::{
+    cli::Sealing,
+    client::{BaseRuntimeApiCollection, FullBackend, FullClient, RuntimeApiCollection},
+    eth::{
+        new_frontier_partial, spawn_frontier_tasks, BackendType, EthCompatRuntimeApiCollection,
+        FrontierBackend, FrontierBlockImport, FrontierPartialComponents,
+    },
+};
+pub use crate::{
+    client::{Client, TemplateRuntimeExecutor},
+    eth::{db_config_dir, EthConfiguration},
+};
+
+type BasicImportQueue = sc_consensus::DefaultImportQueue<Block>;
+type FullPool<Client> = sc_transaction_pool::FullPool<Block, Client>;
+type FullSelectChain = sc_consensus::LongestChain<FullBackend, Block>;
+
+type GrandpaBlockImport<Client> =
+    sc_consensus_grandpa::GrandpaBlockImport<FullBackend, Block, Client, FullSelectChain>;
+type GrandpaLinkHalf<Client> = sc_consensus_grandpa::LinkHalf<Block, Client, FullSelectChain>;
+type BoxBlockImport = sc_consensus::BoxBlockImport<Block>;
+
+/// The minimum period of blocks on which justifications will be
+/// imported and generated.
+const GRANDPA_JUSTIFICATION_PERIOD: u32 = 512;
+
+pub fn new_partial<RuntimeApi, Executor, BIQ>(
+    config: &Configuration,
+    eth_config: &EthConfiguration,
+    build_import_queue: BIQ,
+) -> Result<
+    PartialComponents<
+        FullClient<RuntimeApi, Executor>,
+        FullBackend,
+        FullSelectChain,
+        BasicImportQueue,
+        FullPool<FullClient<RuntimeApi, Executor>>,
+        (
+            Option<Telemetry>,
+            BoxBlockImport,
+            GrandpaLinkHalf<FullClient<RuntimeApi, Executor>>,
+            FrontierBackend,
+            Arc<fc_rpc::OverrideHandle<Block>>,
+        ),
+    >,
+    ServiceError,
+>
+where
+    RuntimeApi: ConstructRuntimeApi<Block, FullClient<RuntimeApi, Executor>>,
+    RuntimeApi: Send + Sync + 'static,
+    RuntimeApi::RuntimeApi: BaseRuntimeApiCollection + EthCompatRuntimeApiCollection,
+    Executor: NativeExecutionDispatch + 'static,
+    BIQ: FnOnce(
+        Arc<FullClient<RuntimeApi, Executor>>,
+        &Configuration,
+        &EthConfiguration,
+        &TaskManager,
+        Option<TelemetryHandle>,
+        GrandpaBlockImport<FullClient<RuntimeApi, Executor>>,
+    ) -> Result<(BasicImportQueue, BoxBlockImport), ServiceError>,
+{
+    let telemetry = config
+        .telemetry_endpoints
+        .clone()
+        .filter(|x| !x.is_empty())
+        .map(|endpoints| -> Result<_, sc_telemetry::Error> {
+            let worker = TelemetryWorker::new(16)?;
+            let telemetry = worker.handle().new_telemetry(endpoints);
+            Ok((worker, telemetry))
+        })
+        .transpose()?;
+
+    let executor = sc_service::new_native_or_wasm_executor(config);
+
+    let (client, backend, keystore_container, task_manager) =
+        sc_service::new_full_parts::<Block, RuntimeApi, _>(
+            config,
+            telemetry.as_ref().map(|(_, telemetry)| telemetry.handle()),
+            executor,
+        )?;
+    let client = Arc::new(client);
+
+    let telemetry = telemetry.map(|(worker, telemetry)| {
+        task_manager
+            .spawn_handle()
+            .spawn("telemetry", None, worker.run());
+        telemetry
+    });
+
+    let select_chain = sc_consensus::LongestChain::new(backend.clone());
+    let (grandpa_block_import, grandpa_link) = sc_consensus_grandpa::block_import(
+        client.clone(),
+        GRANDPA_JUSTIFICATION_PERIOD,
+        &client,
+        select_chain.clone(),
+        telemetry.as_ref().map(|x| x.handle()),
+    )?;
+
+    let overrides = crate::rpc::overrides_handle(client.clone());
+    let frontier_backend = match eth_config.frontier_backend_type {
+        BackendType::KeyValue => FrontierBackend::KeyValue(fc_db::kv::Backend::open(
+            Arc::clone(&client),
+            &config.database,
+            &db_config_dir(config),
+        )?),
+        BackendType::Sql => {
+            let db_path = db_config_dir(config).join("sql");
+            std::fs::create_dir_all(&db_path).expect("failed creating sql db directory");
+            let backend = futures::executor::block_on(fc_db::sql::Backend::new(
+                fc_db::sql::BackendConfig::Sqlite(fc_db::sql::SqliteBackendConfig {
+                    path: Path::new("sqlite:///")
+                        .join(db_path)
+                        .join("frontier.db3")
+                        .to_str()
+                        .unwrap(),
+                    create_if_missing: true,
+                    thread_count: eth_config.frontier_sql_backend_thread_count,
+                    cache_size: eth_config.frontier_sql_backend_cache_size,
+                }),
+                eth_config.frontier_sql_backend_pool_size,
+                std::num::NonZeroU32::new(eth_config.frontier_sql_backend_num_ops_timeout),
+                overrides.clone(),
+            ))
+            .unwrap_or_else(|err| panic!("failed creating sql backend: {:?}", err));
+            FrontierBackend::Sql(backend)
+        }
+    };
+
+    let (import_queue, block_import) = build_import_queue(
+        client.clone(),
+        config,
+        eth_config,
+        &task_manager,
+        telemetry.as_ref().map(|x| x.handle()),
+        grandpa_block_import,
+    )?;
+
+    let transaction_pool = sc_transaction_pool::BasicPool::new_full(
+        config.transaction_pool.clone(),
+        config.role.is_authority().into(),
+        config.prometheus_registry(),
+        task_manager.spawn_essential_handle(),
+        client.clone(),
+    );
+
+    Ok(PartialComponents {
+        client,
+        backend,
+        keystore_container,
+        task_manager,
+        select_chain,
+        import_queue,
+        transaction_pool,
+        other: (
+            telemetry,
+            block_import,
+            grandpa_link,
+            frontier_backend,
+            overrides,
+        ),
+    })
+}
+
+/// Build the import queue for the template runtime (aura + grandpa).
+pub fn build_aura_grandpa_import_queue<RuntimeApi, Executor>(
+    client: Arc<FullClient<RuntimeApi, Executor>>,
+    config: &Configuration,
+    eth_config: &EthConfiguration,
+    task_manager: &TaskManager,
+    telemetry: Option<TelemetryHandle>,
+    grandpa_block_import: GrandpaBlockImport<FullClient<RuntimeApi, Executor>>,
+) -> Result<(BasicImportQueue, BoxBlockImport), ServiceError>
+where
+    RuntimeApi: ConstructRuntimeApi<Block, FullClient<RuntimeApi, Executor>>,
+    RuntimeApi: Send + Sync + 'static,
+    RuntimeApi::RuntimeApi: RuntimeApiCollection,
+    Executor: NativeExecutionDispatch + 'static,
+{
+    let frontier_block_import =
+        FrontierBlockImport::new(grandpa_block_import.clone(), client.clone());
+
+    let slot_duration = sc_consensus_aura::slot_duration(&*client)?;
+    let target_gas_price = eth_config.target_gas_price;
+    let create_inherent_data_providers = move |_, ()| async move {
+        let timestamp = sp_timestamp::InherentDataProvider::from_system_time();
+        let slot =
+            sp_consensus_aura::inherents::InherentDataProvider::from_timestamp_and_slot_duration(
+                *timestamp,
+                slot_duration,
+            );
+        let dynamic_fee = fp_dynamic_fee::InherentDataProvider(U256::from(target_gas_price));
+        Ok((slot, timestamp, dynamic_fee))
+    };
+
+    let import_queue = sc_consensus_aura::import_queue::<AuraPair, _, _, _, _, _>(
+        sc_consensus_aura::ImportQueueParams {
+            block_import: frontier_block_import.clone(),
+            justification_import: Some(Box::new(grandpa_block_import)),
+            client,
+            create_inherent_data_providers,
+            spawner: &task_manager.spawn_essential_handle(),
+            registry: config.prometheus_registry(),
+            check_for_equivocation: Default::default(),
+            telemetry,
+            compatibility_mode: sc_consensus_aura::CompatibilityMode::None,
+        },
+    )
+    .map_err::<ServiceError, _>(Into::into)?;
+
+    Ok((import_queue, Box::new(frontier_block_import)))
+}
+
+/// Build the import queue for the template runtime (manual seal).
+pub fn build_manual_seal_import_queue<RuntimeApi, Executor>(
+    client: Arc<FullClient<RuntimeApi, Executor>>,
+    config: &Configuration,
+    _eth_config: &EthConfiguration,
+    task_manager: &TaskManager,
+    _telemetry: Option<TelemetryHandle>,
+    _grandpa_block_import: GrandpaBlockImport<FullClient<RuntimeApi, Executor>>,
+) -> Result<(BasicImportQueue, BoxBlockImport), ServiceError>
+where
+    RuntimeApi: ConstructRuntimeApi<Block, FullClient<RuntimeApi, Executor>>,
+    RuntimeApi: Send + Sync + 'static,
+    RuntimeApi::RuntimeApi: RuntimeApiCollection,
+    Executor: NativeExecutionDispatch + 'static,
+{
+    let frontier_block_import = FrontierBlockImport::new(client.clone(), client);
+    Ok((
+        sc_consensus_manual_seal::import_queue(
+            Box::new(frontier_block_import.clone()),
+            &task_manager.spawn_essential_handle(),
+            config.prometheus_registry(),
+        ),
+        Box::new(frontier_block_import),
+    ))
+}
+
+/// Builds a new service for a full client.
+pub async fn new_full<RuntimeApi, Executor>(
+    mut config: Configuration,
+    eth_config: EthConfiguration,
+    sealing: Option<Sealing>,
+) -> Result<TaskManager, ServiceError>
+where
+    RuntimeApi: ConstructRuntimeApi<Block, FullClient<RuntimeApi, Executor>>,
+    RuntimeApi: Send + Sync + 'static,
+    RuntimeApi::RuntimeApi: RuntimeApiCollection,
+    Executor: NativeExecutionDispatch + 'static,
+{
+    let build_import_queue = if sealing.is_some() {
+        build_manual_seal_import_queue::<RuntimeApi, Executor>
+    } else {
+        build_aura_grandpa_import_queue::<RuntimeApi, Executor>
+    };
+
+    let PartialComponents {
+        client,
+        backend,
+        mut task_manager,
+        import_queue,
+        keystore_container,
+        select_chain,
+        transaction_pool,
+        other: (mut telemetry, block_import, grandpa_link, frontier_backend, overrides),
+    } = new_partial(&config, &eth_config, build_import_queue)?;
+
+    let FrontierPartialComponents {
+        filter_pool,
+        fee_history_cache,
+        fee_history_cache_limit,
+    } = new_frontier_partial(&eth_config)?;
+
+    let mut net_config = sc_network::config::FullNetworkConfiguration::new(&config.network);
+    let grandpa_protocol_name = sc_consensus_grandpa::protocol_standard_name(
+        &client.block_hash(0)?.expect("Genesis block exists; qed"),
+        &config.chain_spec,
+    );
+    let (grandpa_protocol_config, grandpa_notification_service) =
+        sc_consensus_grandpa::grandpa_peers_set_config(grandpa_protocol_name.clone());
+
+    let warp_sync_params = if sealing.is_some() {
+        None
+    } else {
+        net_config.add_notification_protocol(grandpa_protocol_config);
+        let warp_sync: Arc<dyn WarpSyncProvider<Block>> =
+            Arc::new(sc_consensus_grandpa::warp_proof::NetworkProvider::new(
+                backend.clone(),
+                grandpa_link.shared_authority_set().clone(),
+                Vec::default(),
+            ));
+        Some(WarpSyncParams::WithProvider(warp_sync))
+    };
+
+    let (network, system_rpc_tx, tx_handler_controller, network_starter, sync_service) =
+        sc_service::build_network(sc_service::BuildNetworkParams {
+            config: &config,
+            net_config,
+            client: client.clone(),
+            transaction_pool: transaction_pool.clone(),
+            spawn_handle: task_manager.spawn_handle(),
+            import_queue,
+            block_announce_validator_builder: None,
+            warp_sync_params,
+            block_relay: None,
+        })?;
+
+    if config.offchain_worker.enabled {
+        task_manager.spawn_handle().spawn(
+            "offchain-workers-runner",
+            "offchain-worker",
+            sc_offchain::OffchainWorkers::new(sc_offchain::OffchainWorkerOptions {
+                runtime_api_provider: client.clone(),
+                is_validator: config.role.is_authority(),
+                keystore: Some(keystore_container.keystore()),
+                offchain_db: backend.offchain_storage(),
+                transaction_pool: Some(OffchainTransactionPoolFactory::new(
+                    transaction_pool.clone(),
+                )),
+                network_provider: network.clone(),
+                enable_http_requests: true,
+                custom_extensions: |_| vec![],
+            })
+            .run(client.clone(), task_manager.spawn_handle())
+            .boxed(),
+        );
+    }
+
+    let role = config.role.clone();
+    let force_authoring = config.force_authoring;
+    let name = config.network.node_name.clone();
+    let enable_grandpa = !config.disable_grandpa && sealing.is_none();
+    let prometheus_registry = config.prometheus_registry().cloned();
+
+    // Channel for the rpc handler to communicate with the authorship task.
+    let (command_sink, commands_stream) = mpsc::channel(1000);
+
+    // Sinks for pubsub notifications.
+    // Everytime a new subscription is created, a new mpsc channel is added to the sink pool.
+    // The MappingSyncWorker sends through the channel on block import and the subscription emits a notification to the subscriber on receiving a message through this channel.
+    // This way we avoid race conditions when using native substrate block import notification stream.
+    let pubsub_notification_sinks: fc_mapping_sync::EthereumBlockNotificationSinks<
+        fc_mapping_sync::EthereumBlockNotification<Block>,
+    > = Default::default();
+    let pubsub_notification_sinks = Arc::new(pubsub_notification_sinks);
+
+    // for ethereum-compatibility rpc.
+    config.rpc_id_provider = Some(Box::new(fc_rpc::EthereumSubIdProvider));
+
+    let rpc_builder = {
+        let client = client.clone();
+        let pool = transaction_pool.clone();
+        let network = network.clone();
+        let sync_service = sync_service.clone();
+
+        let is_authority = role.is_authority();
+        let enable_dev_signer = eth_config.enable_dev_signer;
+        let max_past_logs = eth_config.max_past_logs;
+        let execute_gas_limit_multiplier = eth_config.execute_gas_limit_multiplier;
+        let filter_pool = filter_pool.clone();
+        let frontier_backend = frontier_backend.clone();
+        let pubsub_notification_sinks = pubsub_notification_sinks.clone();
+        let overrides = overrides.clone();
+        let fee_history_cache = fee_history_cache.clone();
+        let block_data_cache = Arc::new(fc_rpc::EthBlockDataCacheTask::new(
+            task_manager.spawn_handle(),
+            overrides.clone(),
+            eth_config.eth_log_block_cache,
+            eth_config.eth_statuses_cache,
+            prometheus_registry.clone(),
+        ));
+
+        let slot_duration = sc_consensus_aura::slot_duration(&*client)?;
+        let target_gas_price = eth_config.target_gas_price;
+        let pending_create_inherent_data_providers = move |_, ()| async move {
+            let current = sp_timestamp::InherentDataProvider::from_system_time();
+            let next_slot = current.timestamp().as_millis() + slot_duration.as_millis();
+            let timestamp = sp_timestamp::InherentDataProvider::new(next_slot.into());
+            let slot = sp_consensus_aura::inherents::InherentDataProvider::from_timestamp_and_slot_duration(
+				*timestamp,
+				slot_duration,
+			);
+            let dynamic_fee = fp_dynamic_fee::InherentDataProvider(U256::from(target_gas_price));
+            Ok((slot, timestamp, dynamic_fee))
+        };
+
+        Box::new(move |deny_unsafe, subscription_task_executor| {
+            let eth_deps = crate::rpc::EthDeps {
+                client: client.clone(),
+                pool: pool.clone(),
+                graph: pool.pool().clone(),
+                converter: Some(TransactionConverter),
+                is_authority,
+                enable_dev_signer,
+                network: network.clone(),
+                sync: sync_service.clone(),
+                frontier_backend: match frontier_backend.clone() {
+                    fc_db::Backend::KeyValue(b) => Arc::new(b),
+                    fc_db::Backend::Sql(b) => Arc::new(b),
+                },
+                overrides: overrides.clone(),
+                block_data_cache: block_data_cache.clone(),
+                filter_pool: filter_pool.clone(),
+                max_past_logs,
+                fee_history_cache: fee_history_cache.clone(),
+                fee_history_cache_limit,
+                execute_gas_limit_multiplier,
+                forced_parent_hashes: None,
+                pending_create_inherent_data_providers,
+            };
+            let deps = crate::rpc::FullDeps {
+                client: client.clone(),
+                pool: pool.clone(),
+                deny_unsafe,
+                command_sink: if sealing.is_some() {
+                    Some(command_sink.clone())
+                } else {
+                    None
+                },
+                eth: eth_deps,
+            };
+            crate::rpc::create_full(
+                deps,
+                subscription_task_executor,
+                pubsub_notification_sinks.clone(),
+            )
+            .map_err(Into::into)
+        })
+    };
+
+    let _rpc_handlers = sc_service::spawn_tasks(sc_service::SpawnTasksParams {
+        config,
+        client: client.clone(),
+        backend: backend.clone(),
+        task_manager: &mut task_manager,
+        keystore: keystore_container.keystore(),
+        transaction_pool: transaction_pool.clone(),
+        rpc_builder,
+        network: network.clone(),
+        system_rpc_tx,
+        tx_handler_controller,
+        sync_service: sync_service.clone(),
+        telemetry: telemetry.as_mut(),
+    })?;
+
+    spawn_frontier_tasks(
+        &task_manager,
+        client.clone(),
+        backend,
+        frontier_backend,
+        filter_pool,
+        overrides,
+        fee_history_cache,
+        fee_history_cache_limit,
+        sync_service.clone(),
+        pubsub_notification_sinks,
+    )
+    .await;
+
+    if role.is_authority() {
+        // manual-seal authorship
+        if let Some(sealing) = sealing {
+            run_manual_seal_authorship(
+                &eth_config,
+                sealing,
+                client,
+                transaction_pool,
+                select_chain,
+                block_import,
+                &task_manager,
+                prometheus_registry.as_ref(),
+                telemetry.as_ref(),
+                commands_stream,
+            )?;
+
+            network_starter.start_network();
+            log::info!("Manual Seal Ready");
+            return Ok(task_manager);
+        }
+
+        let proposer_factory = sc_basic_authorship::ProposerFactory::new(
+            task_manager.spawn_handle(),
+            client.clone(),
+            transaction_pool.clone(),
+            prometheus_registry.as_ref(),
+            telemetry.as_ref().map(|x| x.handle()),
+        );
+
+        let slot_duration = sc_consensus_aura::slot_duration(&*client)?;
+        let target_gas_price = eth_config.target_gas_price;
+        let create_inherent_data_providers = move |_, ()| async move {
+            let timestamp = sp_timestamp::InherentDataProvider::from_system_time();
+            let slot = sp_consensus_aura::inherents::InherentDataProvider::from_timestamp_and_slot_duration(
+				*timestamp,
+				slot_duration,
+			);
+            let dynamic_fee = fp_dynamic_fee::InherentDataProvider(U256::from(target_gas_price));
+            Ok((slot, timestamp, dynamic_fee))
+        };
+
+        let aura = sc_consensus_aura::start_aura::<AuraPair, _, _, _, _, _, _, _, _, _, _>(
+            sc_consensus_aura::StartAuraParams {
+                slot_duration,
+                client,
+                select_chain,
+                block_import,
+                proposer_factory,
+                sync_oracle: sync_service.clone(),
+                justification_sync_link: sync_service.clone(),
+                create_inherent_data_providers,
+                force_authoring,
+                backoff_authoring_blocks: Option::<()>::None,
+                keystore: keystore_container.keystore(),
+                block_proposal_slot_portion: sc_consensus_aura::SlotProportion::new(2f32 / 3f32),
+                max_block_proposal_slot_portion: None,
+                telemetry: telemetry.as_ref().map(|x| x.handle()),
+                compatibility_mode: sc_consensus_aura::CompatibilityMode::None,
+            },
+        )?;
+        // the AURA authoring task is considered essential, i.e. if it
+        // fails we take down the service with it.
+        task_manager
+            .spawn_essential_handle()
+            .spawn_blocking("aura", Some("block-authoring"), aura);
+    }
+
+    if enable_grandpa {
+        // if the node isn't actively participating in consensus then it doesn't
+        // need a keystore, regardless of which protocol we use below.
+        let keystore = if role.is_authority() {
+            Some(keystore_container.keystore())
+        } else {
+            None
+        };
+
+        let grandpa_config = sc_consensus_grandpa::Config {
+            // FIXME #1578 make this available through chainspec
+            gossip_duration: Duration::from_millis(333),
+            justification_generation_period: GRANDPA_JUSTIFICATION_PERIOD,
+            name: Some(name),
+            observer_enabled: false,
+            keystore,
+            local_role: role,
+            telemetry: telemetry.as_ref().map(|x| x.handle()),
+            protocol_name: grandpa_protocol_name,
+        };
+
+        // start the full GRANDPA voter
+        // NOTE: non-authorities could run the GRANDPA observer protocol, but at
+        // this point the full voter should provide better guarantees of block
+        // and vote data availability than the observer. The observer has not
+        // been tested extensively yet and having most nodes in a network run it
+        // could lead to finality stalls.
+        let grandpa_voter =
+            sc_consensus_grandpa::run_grandpa_voter(sc_consensus_grandpa::GrandpaParams {
+                config: grandpa_config,
+                link: grandpa_link,
+                network,
+                sync: sync_service,
+                notification_service: grandpa_notification_service,
+                voting_rule: sc_consensus_grandpa::VotingRulesBuilder::default().build(),
+                prometheus_registry,
+                shared_voter_state: sc_consensus_grandpa::SharedVoterState::empty(),
+                telemetry: telemetry.as_ref().map(|x| x.handle()),
+                offchain_tx_pool_factory: OffchainTransactionPoolFactory::new(transaction_pool),
+            })?;
+
+        // the GRANDPA voter task is considered infallible, i.e.
+        // if it fails we take down the service with it.
+        task_manager
+            .spawn_essential_handle()
+            .spawn_blocking("grandpa-voter", None, grandpa_voter);
+    }
+
+    network_starter.start_network();
+    Ok(task_manager)
+}
+
+fn run_manual_seal_authorship<RuntimeApi, Executor>(
+    eth_config: &EthConfiguration,
+    sealing: Sealing,
+    client: Arc<FullClient<RuntimeApi, Executor>>,
+    transaction_pool: Arc<FullPool<FullClient<RuntimeApi, Executor>>>,
+    select_chain: FullSelectChain,
+    block_import: BoxBlockImport,
+    task_manager: &TaskManager,
+    prometheus_registry: Option<&Registry>,
+    telemetry: Option<&Telemetry>,
+    commands_stream: mpsc::Receiver<sc_consensus_manual_seal::rpc::EngineCommand<Hash>>,
+) -> Result<(), ServiceError>
+where
+    RuntimeApi: ConstructRuntimeApi<Block, FullClient<RuntimeApi, Executor>>,
+    RuntimeApi: Send + Sync + 'static,
+    RuntimeApi::RuntimeApi: RuntimeApiCollection,
+    Executor: NativeExecutionDispatch + 'static,
+{
+    let proposer_factory = sc_basic_authorship::ProposerFactory::new(
+        task_manager.spawn_handle(),
+        client.clone(),
+        transaction_pool.clone(),
+        prometheus_registry,
+        telemetry.as_ref().map(|x| x.handle()),
+    );
+
+    thread_local!(static TIMESTAMP: RefCell<u64> = const { RefCell::new(0) });
+
+    /// Provide a mock duration starting at 0 in millisecond for timestamp inherent.
+    /// Each call will increment timestamp by slot_duration making Aura think time has passed.
+    struct MockTimestampInherentDataProvider;
+
+    #[async_trait::async_trait]
+    impl sp_inherents::InherentDataProvider for MockTimestampInherentDataProvider {
+        async fn provide_inherent_data(
+            &self,
+            inherent_data: &mut sp_inherents::InherentData,
+        ) -> Result<(), sp_inherents::Error> {
+            TIMESTAMP.with(|x| {
+                *x.borrow_mut() += aya_runtime::SLOT_DURATION;
+                inherent_data.put_data(sp_timestamp::INHERENT_IDENTIFIER, &*x.borrow())
+            })
+        }
+
+        async fn try_handle_error(
+            &self,
+            _identifier: &sp_inherents::InherentIdentifier,
+            _error: &[u8],
+        ) -> Option<Result<(), sp_inherents::Error>> {
+            // The pallet never reports error.
+            None
+        }
+    }
+
+    let target_gas_price = eth_config.target_gas_price;
+    let create_inherent_data_providers = move |_, ()| async move {
+        let timestamp = MockTimestampInherentDataProvider;
+        let dynamic_fee = fp_dynamic_fee::InherentDataProvider(U256::from(target_gas_price));
+        Ok((timestamp, dynamic_fee))
+    };
+
+    let manual_seal = match sealing {
+        Sealing::Manual => future::Either::Left(sc_consensus_manual_seal::run_manual_seal(
+            sc_consensus_manual_seal::ManualSealParams {
+                block_import,
+                env: proposer_factory,
+                client,
+                pool: transaction_pool,
+                commands_stream,
+                select_chain,
+                consensus_data_provider: None,
+                create_inherent_data_providers,
+            },
+        )),
+        Sealing::Instant => future::Either::Right(sc_consensus_manual_seal::run_instant_seal(
+            sc_consensus_manual_seal::InstantSealParams {
+                block_import,
+                env: proposer_factory,
+                client,
+                pool: transaction_pool,
+                select_chain,
+                consensus_data_provider: None,
+                create_inherent_data_providers,
+            },
+        )),
+    };
+
+    // we spawn the future on a background thread managed by service.
+    task_manager
+        .spawn_essential_handle()
+        .spawn_blocking("manual-seal", None, manual_seal);
+    Ok(())
+}
+
+pub async fn build_full(
+    config: Configuration,
+    eth_config: EthConfiguration,
+    sealing: Option<Sealing>,
+) -> Result<TaskManager, ServiceError> {
+    new_full::<aya_runtime::RuntimeApi, TemplateRuntimeExecutor>(config, eth_config, sealing).await
+}
+
+pub fn new_chain_ops(
+    config: &mut Configuration,
+    eth_config: &EthConfiguration,
+) -> Result<
+    (
+        Arc<Client>,
+        Arc<FullBackend>,
+        BasicQueue<Block>,
+        TaskManager,
+        FrontierBackend,
+    ),
+    ServiceError,
+> {
+    config.keystore = sc_service::config::KeystoreConfig::InMemory;
+    let PartialComponents {
+        client,
+        backend,
+        import_queue,
+        task_manager,
+        other,
+        ..
+    } = new_partial::<aya_runtime::RuntimeApi, TemplateRuntimeExecutor, _>(
+        config,
+        eth_config,
+        build_aura_grandpa_import_queue,
+    )?;
+    Ok((client, backend, import_queue, task_manager, other.3))
+}
diff --git a/pallets/substrate-validator-set/Cargo.toml b/pallets/substrate-validator-set/Cargo.toml
new file mode 100644
index 0000000..28968bd
--- /dev/null
+++ b/pallets/substrate-validator-set/Cargo.toml
@@ -0,0 +1,45 @@
+[package]
+name = 'substrate-validator-set'
+version = '1.1.0'
+authors = ['Gautam Dhameja <quasijatt@outlook.com>']
+edition = '2021'
+license = 'Apache-2.0'
+repository = 'https://github.com/gautamdhameja/substrate-validator-set'
+
+[dependencies]
+sp-core = { workspace = true }
+sp-io = { workspace = true }
+sp-runtime = { workspace = true }
+sp-std = { workspace = true }
+sp-staking = { workspace = true }
+frame-benchmarking = { workspace = true }
+frame-support = { workspace = true }
+frame-system = { workspace = true }
+pallet-session = { workspace = true }
+sp-weights = { workspace = true }
+scale-info = { workspace = true }
+log = { workspace = true }
+scale-codec = { workspace = true }
+
+
+[dev-dependencies]
+sp-state-machine = { workspace = true }
+serde = { workspace = true }
+
+
+[features]
+default = ['std']
+runtime-benchmarks = ['frame-benchmarking/runtime-benchmarks']
+std = [
+    'scale-codec/std',
+    'frame-benchmarking/std',
+    'frame-support/std',
+    'frame-system/std',
+    'scale-info/std',
+    'sp-core/std',
+    'sp-io/std',
+    'sp-std/std',
+    'sp-runtime/std',
+    'pallet-session/std',
+]
+try-runtime = ['frame-support/try-runtime']
diff --git a/pallets/substrate-validator-set/LICENSE b/pallets/substrate-validator-set/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/pallets/substrate-validator-set/LICENSE
@@ -0,0 +1,201 @@
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+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/pallets/substrate-validator-set/rustfmt.toml b/pallets/substrate-validator-set/rustfmt.toml
new file mode 100644
index 0000000..caa0a74
--- /dev/null
+++ b/pallets/substrate-validator-set/rustfmt.toml
@@ -0,0 +1,25 @@
+# Copied from https://github.com/paritytech/substrate/blob/master/rustfmt.toml to follow the Substrate code style.
+
+# Basic
+hard_tabs = true
+max_width = 100
+use_small_heuristics = "Max"
+# Imports
+imports_granularity = "Crate"
+reorder_imports = true
+# Consistency
+newline_style = "Unix"
+# Format comments
+comment_width = 100
+wrap_comments = true
+# Misc
+chain_width = 80
+spaces_around_ranges = false
+binop_separator = "Back"
+reorder_impl_items = false
+match_arm_leading_pipes = "Preserve"
+match_arm_blocks = false
+match_block_trailing_comma = true
+trailing_comma = "Vertical"
+trailing_semicolon = false
+use_field_init_shorthand = true
\ No newline at end of file
diff --git a/pallets/substrate-validator-set/src/benchmarking.rs b/pallets/substrate-validator-set/src/benchmarking.rs
new file mode 100644
index 0000000..5d33d09
--- /dev/null
+++ b/pallets/substrate-validator-set/src/benchmarking.rs
@@ -0,0 +1,27 @@
+#![cfg(feature = "runtime-benchmarks")]
+
+use super::*;
+use frame_benchmarking::v1::{account, benchmarks, BenchmarkError};
+use frame_support::traits::EnsureOrigin;
+
+const SEED: u32 = 0;
+
+benchmarks! {
+	add_validator {
+		let origin =
+			T::AddRemoveOrigin::try_successful_origin().map_err(|_| BenchmarkError::Weightless)?;
+		let validator: T::ValidatorId = account("validator", 0, SEED);
+	}: _<T::RuntimeOrigin>(origin, validator)
+
+	remove_validator {
+		let origin =
+			T::AddRemoveOrigin::try_successful_origin().map_err(|_| BenchmarkError::Weightless)?;
+		let validator: T::ValidatorId = account("validator", 0, SEED);
+	}: _<T::RuntimeOrigin>(origin, validator)
+
+	impl_benchmark_test_suite!(
+		ValidatorSet,
+		crate::mock::new_test_ext(),
+		crate::mock::Test,
+	);
+}
diff --git a/pallets/substrate-validator-set/src/lib.rs b/pallets/substrate-validator-set/src/lib.rs
new file mode 100644
index 0000000..e18ed5a
--- /dev/null
+++ b/pallets/substrate-validator-set/src/lib.rs
@@ -0,0 +1,290 @@
+//! # Validator Set Pallet
+//!
+//! The Validator Set Pallet allows addition and removal of
+//! authorities/validators via extrinsics (transaction calls), in
+//! Substrate-based PoA networks. It also integrates with the im-online pallet
+//! to automatically remove offline validators.
+//!
+//! The pallet depends on the Session pallet and implements related traits for session
+//! management. Currently it uses periodic session rotation provided by the
+//! session pallet to automatically rotate sessions. For this reason, the
+//! validator addition and removal becomes effective only after 2 sessions
+//! (queuing + applying).
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+mod benchmarking;
+mod mock;
+mod tests;
+pub mod weights;
+
+use frame_support::{
+	ensure,
+	pallet_prelude::*,
+	traits::{EstimateNextSessionRotation, Get, ValidatorSet, ValidatorSetWithIdentification},
+	DefaultNoBound,
+};
+use frame_system::pallet_prelude::*;
+use log;
+pub use pallet::*;
+use sp_runtime::traits::{Convert, Zero};
+use sp_staking::offence::{Offence, OffenceError, ReportOffence};
+use sp_std::prelude::*;
+pub use weights::*;
+
+pub const LOG_TARGET: &'static str = "runtime::validator-set";
+
+#[frame_support::pallet()]
+pub mod pallet {
+	use super::*;
+
+	/// Configure the pallet by specifying the parameters and types on which it
+	/// depends.
+	#[pallet::config]
+	pub trait Config: frame_system::Config + pallet_session::Config {
+		/// The Event type.
+		type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
+
+		/// Origin for adding or removing a validator.
+		type AddRemoveOrigin: EnsureOrigin<Self::RuntimeOrigin>;
+
+		/// Minimum number of validators to leave in the validator set during
+		/// auto removal.
+		/// Initial validator count could be less than this.
+		type MinAuthorities: Get<u32>;
+
+		/// Information on runtime weights.
+		type WeightInfo: WeightInfo;
+	}
+
+	#[pallet::pallet]
+	#[pallet::without_storage_info]
+	pub struct Pallet<T>(_);
+
+	#[pallet::storage]
+	#[pallet::getter(fn validators)]
+	pub type Validators<T: Config> = StorageValue<_, Vec<T::ValidatorId>, ValueQuery>;
+
+	#[pallet::storage]
+	#[pallet::getter(fn offline_validators)]
+	pub type OfflineValidators<T: Config> = StorageValue<_, Vec<T::ValidatorId>, ValueQuery>;
+
+	#[pallet::event]
+	#[pallet::generate_deposit(pub(super) fn deposit_event)]
+	pub enum Event<T: Config> {
+		/// New validator addition initiated. Effective in ~2 sessions.
+		ValidatorAdditionInitiated(T::ValidatorId),
+
+		/// Validator removal initiated. Effective in ~2 sessions.
+		ValidatorRemovalInitiated(T::ValidatorId),
+	}
+
+	// Errors inform users that something went wrong.
+	#[pallet::error]
+	pub enum Error<T> {
+		/// Target (post-removal) validator count is below the minimum.
+		TooLowValidatorCount,
+		/// Validator is already in the validator set.
+		Duplicate,
+	}
+
+	#[pallet::hooks]
+	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {}
+
+	#[pallet::genesis_config]
+	#[derive(DefaultNoBound)]
+	pub struct GenesisConfig<T: Config> {
+		pub initial_validators: Vec<T::ValidatorId>,
+	}
+
+	#[pallet::genesis_build]
+	impl<T: Config> BuildGenesisConfig for GenesisConfig<T> {
+		fn build(&self) {
+			assert!(<Validators<T>>::get().is_empty(), "Validators are already initialized!");
+			<Validators<T>>::put(&self.initial_validators);
+		}
+	}
+
+	#[pallet::call]
+	impl<T: Config> Pallet<T> {
+		/// Add a new validator.
+		///
+		/// New validator's session keys should be set in Session pallet before
+		/// calling this.
+		///
+		/// The origin can be configured using the `AddRemoveOrigin` type in the
+		/// host runtime. Can also be set to sudo/root.
+		#[pallet::call_index(0)]
+		#[pallet::weight(<T as pallet::Config>::WeightInfo::add_validator())]
+		pub fn add_validator(origin: OriginFor<T>, validator_id: T::ValidatorId) -> DispatchResult {
+			T::AddRemoveOrigin::ensure_origin(origin)?;
+
+			Self::do_add_validator(validator_id.clone())?;
+
+			Ok(())
+		}
+
+		/// Remove a validator.
+		///
+		/// The origin can be configured using the `AddRemoveOrigin` type in the
+		/// host runtime. Can also be set to sudo/root.
+		#[pallet::call_index(1)]
+		#[pallet::weight(<T as pallet::Config>::WeightInfo::remove_validator())]
+		pub fn remove_validator(
+			origin: OriginFor<T>,
+			validator_id: T::ValidatorId,
+		) -> DispatchResult {
+			T::AddRemoveOrigin::ensure_origin(origin)?;
+
+			Self::do_remove_validator(validator_id.clone())?;
+
+			Ok(())
+		}
+	}
+}
+
+impl<T: Config> Pallet<T> {
+	fn do_add_validator(validator_id: T::ValidatorId) -> DispatchResult {
+		ensure!(!<Validators<T>>::get().contains(&validator_id), Error::<T>::Duplicate);
+		<Validators<T>>::mutate(|v| v.push(validator_id.clone()));
+
+		Self::deposit_event(Event::ValidatorAdditionInitiated(validator_id.clone()));
+		log::debug!(target: LOG_TARGET, "Validator addition initiated.");
+
+		Ok(())
+	}
+
+	fn do_remove_validator(validator_id: T::ValidatorId) -> DispatchResult {
+		let mut validators = <Validators<T>>::get();
+
+		// Ensuring that the post removal, target validator count doesn't go
+		// below the minimum.
+		ensure!(
+			validators.len().saturating_sub(1) as u32 >= T::MinAuthorities::get(),
+			Error::<T>::TooLowValidatorCount
+		);
+
+		validators.retain(|v| *v != validator_id);
+
+		<Validators<T>>::put(validators);
+
+		Self::deposit_event(Event::ValidatorRemovalInitiated(validator_id.clone()));
+		log::debug!(target: LOG_TARGET, "Validator removal initiated.");
+
+		Ok(())
+	}
+
+	// Adds offline validators to a local cache for removal on new session.
+	fn mark_for_removal(validator_id: T::ValidatorId) {
+		<OfflineValidators<T>>::mutate(|v| v.push(validator_id));
+		log::debug!(target: LOG_TARGET, "Offline validator marked for auto removal.");
+	}
+
+	// Removes offline validators from the validator set and clears the offline
+	// cache. It is called in the session change hook and removes the validators
+	// who were reported offline during the session that is ending. We do not
+	// check for `MinAuthorities` here, because the offline validators will not
+	// produce blocks and will have the same overall effect on the runtime.
+	fn remove_offline_validators() {
+		let validators_to_remove = <OfflineValidators<T>>::get();
+
+		// Delete from active validator set.
+		<Validators<T>>::mutate(|vs| vs.retain(|v| !validators_to_remove.contains(v)));
+		log::debug!(
+			target: LOG_TARGET,
+			"Initiated removal of {:?} offline validators.",
+			validators_to_remove.len()
+		);
+
+		// Clear the offline validator list to avoid repeated deletion.
+		<OfflineValidators<T>>::put(Vec::<T::ValidatorId>::new());
+	}
+}
+
+// Provides the new set of validators to the session module when session is
+// being rotated.
+impl<T: Config> pallet_session::SessionManager<T::ValidatorId> for Pallet<T> {
+	// Plan a new session and provide new validator set.
+	fn new_session(_new_index: u32) -> Option<Vec<T::ValidatorId>> {
+		// Remove any offline validators. This will only work when the runtime
+		// also has the im-online pallet.
+		Self::remove_offline_validators();
+
+		log::debug!(target: LOG_TARGET, "New session called; updated validator set provided.");
+
+		Some(Self::validators())
+	}
+
+	fn end_session(_end_index: u32) {}
+
+	fn start_session(_start_index: u32) {}
+}
+
+impl<T: Config> EstimateNextSessionRotation<BlockNumberFor<T>> for Pallet<T> {
+	fn average_session_length() -> BlockNumberFor<T> {
+		Zero::zero()
+	}
+
+	fn estimate_current_session_progress(
+		_now: BlockNumberFor<T>,
+	) -> (Option<sp_runtime::Permill>, sp_weights::Weight) {
+		(None, Zero::zero())
+	}
+
+	fn estimate_next_session_rotation(
+		_now: BlockNumberFor<T>,
+	) -> (Option<BlockNumberFor<T>>, sp_weights::Weight) {
+		(None, Zero::zero())
+	}
+}
+
+// Implementation of Convert trait to satisfy trait bounds in session pallet.
+// Here it just returns the same ValidatorId.
+pub struct ValidatorOf<T>(sp_std::marker::PhantomData<T>);
+
+impl<T: Config> Convert<T::ValidatorId, Option<T::ValidatorId>> for ValidatorOf<T> {
+	fn convert(account: T::ValidatorId) -> Option<T::ValidatorId> {
+		Some(account)
+	}
+}
+
+impl<T: Config> ValidatorSet<T::ValidatorId> for Pallet<T> {
+	type ValidatorId = T::ValidatorId;
+	type ValidatorIdOf = ValidatorOf<T>;
+
+	fn session_index() -> sp_staking::SessionIndex {
+		pallet_session::Pallet::<T>::current_index()
+	}
+
+	fn validators() -> Vec<T::ValidatorId> {
+		pallet_session::Pallet::<T>::validators()
+	}
+}
+
+impl<T: Config> ValidatorSetWithIdentification<T::ValidatorId> for Pallet<T> {
+	type Identification = T::ValidatorId;
+	type IdentificationOf = ValidatorOf<T>;
+}
+
+// Offence reporting and unresponsiveness management.
+// This is for the ImOnline pallet integration.
+impl<T: Config, O: Offence<(T::ValidatorId, T::ValidatorId)>>
+	ReportOffence<T::AccountId, (T::ValidatorId, T::ValidatorId), O> for Pallet<T>
+{
+	fn report_offence(_reporters: Vec<T::AccountId>, offence: O) -> Result<(), OffenceError> {
+		let offenders = offence.offenders();
+
+		for (v, _) in offenders.into_iter() {
+			Self::mark_for_removal(v);
+		}
+
+		Ok(())
+	}
+
+	fn is_known_offence(
+		_offenders: &[(T::ValidatorId, T::ValidatorId)],
+		_time_slot: &O::TimeSlot,
+	) -> bool {
+		false
+	}
+}
diff --git a/pallets/substrate-validator-set/src/mock.rs b/pallets/substrate-validator-set/src/mock.rs
new file mode 100644
index 0000000..8fc2282
--- /dev/null
+++ b/pallets/substrate-validator-set/src/mock.rs
@@ -0,0 +1,177 @@
+//! Mock helpers for Validator Set pallet.
+
+#![cfg(test)]
+
+use super::*;
+use crate as validator_set;
+use frame_support::{derive_impl, parameter_types};
+use frame_system::EnsureRoot;
+use pallet_session::*;
+use sp_core::crypto::key_types::DUMMY;
+use sp_runtime::{
+	impl_opaque_keys, testing::UintAuthorityId, traits::OpaqueKeys, BuildStorage, KeyTypeId,
+	RuntimeAppPublic,
+};
+use sp_state_machine::BasicExternalities;
+use std::collections::BTreeMap;
+
+impl_opaque_keys! {
+	pub struct MockSessionKeys {
+		pub dummy: UintAuthorityId,
+	}
+}
+
+impl From<UintAuthorityId> for MockSessionKeys {
+	fn from(dummy: UintAuthorityId) -> Self {
+		Self { dummy }
+	}
+}
+
+pub const KEY_ID_A: KeyTypeId = KeyTypeId([4; 4]);
+pub const KEY_ID_B: KeyTypeId = KeyTypeId([9; 4]);
+
+#[derive(Debug, Clone, scale_codec::Encode, scale_codec::Decode, PartialEq, Eq)]
+pub struct PreUpgradeMockSessionKeys {
+	pub a: [u8; 32],
+	pub b: [u8; 64],
+}
+
+impl OpaqueKeys for PreUpgradeMockSessionKeys {
+	type KeyTypeIdProviders = ();
+
+	fn key_ids() -> &'static [KeyTypeId] {
+		&[KEY_ID_A, KEY_ID_B]
+	}
+
+	fn get_raw(&self, i: KeyTypeId) -> &[u8] {
+		match i {
+			i if i == KEY_ID_A => &self.a[..],
+			i if i == KEY_ID_B => &self.b[..],
+			_ => &[],
+		}
+	}
+}
+
+type Block = frame_system::mocking::MockBlock<Test>;
+
+frame_support::construct_runtime!(
+	pub enum Test
+	{
+		System: frame_system,
+		ValidatorSet: validator_set,
+		Session: pallet_session,
+	}
+);
+
+parameter_types! {
+	pub static Validators: Vec<u64> = vec![1, 2, 3];
+	pub static NextValidators: Vec<u64> = vec![1, 2, 3];
+	pub static Authorities: Vec<UintAuthorityId> =
+		vec![UintAuthorityId(1), UintAuthorityId(2), UintAuthorityId(3)];
+	pub static ForceSessionEnd: bool = false;
+	pub static SessionLength: u64 = 2;
+	pub static SessionChanged: bool = false;
+	pub static TestSessionChanged: bool = false;
+	pub static Disabled: bool = false;
+	pub static BeforeSessionEndCalled: bool = false;
+	pub static ValidatorAccounts: BTreeMap<u64, u64> = BTreeMap::new();
+}
+
+pub struct TestShouldEndSession;
+impl ShouldEndSession<u64> for TestShouldEndSession {
+	fn should_end_session(now: u64) -> bool {
+		let l = SessionLength::get();
+		now % l == 0
+			|| ForceSessionEnd::mutate(|l| {
+				let r = *l;
+				*l = false;
+				r
+			})
+	}
+}
+
+pub struct TestSessionHandler;
+impl SessionHandler<u64> for TestSessionHandler {
+	const KEY_TYPE_IDS: &'static [sp_runtime::KeyTypeId] = &[UintAuthorityId::ID];
+	fn on_genesis_session<T: OpaqueKeys>(_validators: &[(u64, T)]) {}
+	fn on_new_session<T: OpaqueKeys>(
+		changed: bool,
+		validators: &[(u64, T)],
+		_queued_validators: &[(u64, T)],
+	) {
+		SessionChanged::mutate(|l| *l = changed);
+		Authorities::mutate(|l| {
+			*l = validators
+				.iter()
+				.map(|(_, id)| id.get::<UintAuthorityId>(DUMMY).unwrap_or_default())
+				.collect()
+		});
+	}
+	fn on_disabled(_validator_index: u32) {
+		Disabled::mutate(|l| *l = true)
+	}
+	fn on_before_session_ending() {
+		BeforeSessionEndCalled::mutate(|b| *b = true);
+	}
+}
+
+pub fn authorities() -> Vec<UintAuthorityId> {
+	Authorities::get().to_vec()
+}
+
+pub fn new_test_ext() -> sp_io::TestExternalities {
+	let mut t = frame_system::GenesisConfig::<Test>::default().build_storage().unwrap();
+	let keys: Vec<_> = NextValidators::get()
+		.iter()
+		.cloned()
+		.map(|i| (i, i, UintAuthorityId(i).into()))
+		.collect();
+	BasicExternalities::execute_with_storage(&mut t, || {
+		for (ref k, ..) in &keys {
+			frame_system::Pallet::<Test>::inc_providers(k);
+		}
+		frame_system::Pallet::<Test>::inc_providers(&4);
+		// An additional identity that we use.
+		frame_system::Pallet::<Test>::inc_providers(&69);
+	});
+	validator_set::GenesisConfig::<Test> {
+		initial_validators: keys.iter().map(|x| x.0).collect::<Vec<_>>(),
+	}
+	.assimilate_storage(&mut t)
+	.unwrap();
+	pallet_session::GenesisConfig::<Test> { keys }
+		.assimilate_storage(&mut t)
+		.unwrap();
+
+	let v = NextValidators::get().iter().map(|&i| (i, i)).collect();
+	ValidatorAccounts::mutate(|m| *m = v);
+	sp_io::TestExternalities::new(t)
+}
+
+#[derive_impl(frame_system::config_preludes::TestDefaultConfig)]
+impl frame_system::Config for Test {
+	type Block = Block;
+}
+
+parameter_types! {
+	pub const MinAuthorities: u32 = 2;
+}
+
+impl validator_set::Config for Test {
+	type AddRemoveOrigin = EnsureRoot<Self::AccountId>;
+	type RuntimeEvent = RuntimeEvent;
+	type MinAuthorities = MinAuthorities;
+	type WeightInfo = ();
+}
+
+impl pallet_session::Config for Test {
+	type ValidatorId = u64;
+	type ValidatorIdOf = validator_set::ValidatorOf<Self>;
+	type ShouldEndSession = TestShouldEndSession;
+	type NextSessionRotation = ();
+	type SessionManager = ValidatorSet;
+	type SessionHandler = TestSessionHandler;
+	type Keys = MockSessionKeys;
+	type WeightInfo = ();
+	type RuntimeEvent = RuntimeEvent;
+}
diff --git a/pallets/substrate-validator-set/src/tests.rs b/pallets/substrate-validator-set/src/tests.rs
new file mode 100644
index 0000000..7c0c7e4
--- /dev/null
+++ b/pallets/substrate-validator-set/src/tests.rs
@@ -0,0 +1,68 @@
+//! Tests for the Validator Set pallet.
+
+#![cfg(test)]
+
+use super::*;
+use crate::mock::{authorities, new_test_ext, RuntimeOrigin, Session, Test, ValidatorSet};
+use frame_support::{assert_noop, assert_ok, pallet_prelude::*};
+use sp_runtime::testing::UintAuthorityId;
+
+#[test]
+fn simple_setup_should_work() {
+	new_test_ext().execute_with(|| {
+		assert_eq!(authorities(), vec![UintAuthorityId(1), UintAuthorityId(2), UintAuthorityId(3)]);
+		assert_eq!(ValidatorSet::validators(), vec![1u64, 2u64, 3u64]);
+		assert_eq!(Session::validators(), vec![1, 2, 3]);
+	});
+}
+
+#[test]
+fn add_validator_updates_validators_list() {
+	new_test_ext().execute_with(|| {
+		assert_ok!(ValidatorSet::add_validator(RuntimeOrigin::root(), 4));
+		assert_eq!(ValidatorSet::validators(), vec![1u64, 2u64, 3u64, 4u64])
+	});
+}
+
+#[test]
+fn remove_validator_updates_validators_list() {
+	new_test_ext().execute_with(|| {
+		assert_ok!(ValidatorSet::remove_validator(RuntimeOrigin::root(), 2));
+		assert_eq!(ValidatorSet::validators(), &[1, 3]);
+		// Add validator again
+		assert_ok!(ValidatorSet::add_validator(RuntimeOrigin::root(), 2));
+		assert_eq!(ValidatorSet::validators(), &[1, 3, 2]);
+	});
+}
+
+#[test]
+fn add_validator_fails_with_invalid_origin() {
+	new_test_ext().execute_with(|| {
+		assert_noop!(
+			ValidatorSet::add_validator(RuntimeOrigin::signed(1), 4),
+			DispatchError::BadOrigin
+		);
+	});
+}
+
+#[test]
+fn remove_validator_fails_with_invalid_origin() {
+	new_test_ext().execute_with(|| {
+		assert_noop!(
+			ValidatorSet::remove_validator(RuntimeOrigin::signed(1), 4),
+			DispatchError::BadOrigin
+		);
+	});
+}
+
+#[test]
+fn duplicate_check() {
+	new_test_ext().execute_with(|| {
+		assert_ok!(ValidatorSet::add_validator(RuntimeOrigin::root(), 4));
+		assert_eq!(ValidatorSet::validators(), vec![1u64, 2u64, 3u64, 4u64]);
+		assert_noop!(
+			ValidatorSet::add_validator(RuntimeOrigin::root(), 4),
+			Error::<Test>::Duplicate
+		);
+	});
+}
diff --git a/pallets/substrate-validator-set/src/weights.rs b/pallets/substrate-validator-set/src/weights.rs
new file mode 100644
index 0000000..645c8a5
--- /dev/null
+++ b/pallets/substrate-validator-set/src/weights.rs
@@ -0,0 +1,93 @@
+
+//! Autogenerated weights for Validator Set
+//!
+//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
+//! DATE: 2023-05-29, STEPS: `50`, REPEAT: `20`, LOW RANGE: `[]`, HIGH RANGE: `[]`
+//! WORST CASE MAP SIZE: `1000000`
+//! EXECUTION: Some(Wasm), WASM-EXECUTION: Compiled, CHAIN: Some("local"), DB CACHE: 1024
+
+// Executed Command:
+// ./target/release/node-template
+// benchmark
+// pallet
+// --chain
+// local
+// --pallet
+// validator_set
+// --extrinsic
+// *
+// --steps
+// 50
+// --repeat
+// 20
+// --execution=wasm
+// --wasm-execution=compiled
+// --heap-pages=4096
+
+#![cfg_attr(rustfmt, rustfmt_skip)]
+#![allow(unused_parens)]
+#![allow(unused_imports)]
+#![allow(missing_docs)]
+
+use frame_support::{traits::Get, weights::{Weight, constants::RocksDbWeight}};
+use core::marker::PhantomData;
+
+/// Weight functions needed for validator_set.
+pub trait WeightInfo {
+	fn add_validator() -> Weight;
+	fn remove_validator() -> Weight;
+}
+
+/// Weights for validator_set using the Substrate node and recommended hardware.
+pub struct SubstrateWeight<T>(PhantomData<T>);
+impl<T: frame_system::Config> WeightInfo for SubstrateWeight<T> {
+	/// Storage: ValidatorSet Validators (r:1 w:1)
+	/// Proof Skipped: ValidatorSet Validators (max_values: Some(1), max_size: None, mode: Measured)
+	fn add_validator() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `117`
+		//  Estimated: `1602`
+		// Minimum execution time: 20_810_000 picoseconds.
+		Weight::from_parts(21_330_000, 1602)
+			.saturating_add(T::DbWeight::get().reads(1_u64))
+			.saturating_add(T::DbWeight::get().writes(1_u64))
+	}
+	/// Storage: ValidatorSet Validators (r:1 w:1)
+	/// Proof Skipped: ValidatorSet Validators (max_values: Some(1), max_size: None, mode: Measured)
+	fn remove_validator() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `117`
+		//  Estimated: `1602`
+		// Minimum execution time: 18_700_000 picoseconds.
+		Weight::from_parts(19_840_000, 1602)
+			.saturating_add(T::DbWeight::get().reads(1_u64))
+			.saturating_add(T::DbWeight::get().writes(1_u64))
+	}
+}
+
+// For backwards compatibility and tests
+impl WeightInfo for () {
+	/// Storage: ValidatorSet Validators (r:1 w:1)
+	/// Proof Skipped: ValidatorSet Validators (max_values: Some(1), max_size: None, mode: Measured)
+	fn add_validator() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `117`
+		//  Estimated: `1602`
+		// Minimum execution time: 20_810_000 picoseconds.
+		Weight::from_parts(21_330_000, 1602)
+			.saturating_add(RocksDbWeight::get().reads(1_u64))
+			.saturating_add(RocksDbWeight::get().writes(1_u64))
+	}
+	/// Storage: ValidatorSet Validators (r:1 w:1)
+	/// Proof Skipped: ValidatorSet Validators (max_values: Some(1), max_size: None, mode: Measured)
+	fn remove_validator() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `117`
+		//  Estimated: `1602`
+		// Minimum execution time: 18_700_000 picoseconds.
+		Weight::from_parts(19_840_000, 1602)
+			.saturating_add(RocksDbWeight::get().reads(1_u64))
+			.saturating_add(RocksDbWeight::get().writes(1_u64))
+	}
+}
+
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
new file mode 100644
index 0000000..8f53beb
--- /dev/null
+++ b/runtime/Cargo.toml
@@ -0,0 +1,153 @@
+[package]
+name = "aya-runtime"
+version = "0.1.0"
+license = "Unlicense"
+description = "A fresh FRAME-based Substrate runtime."
+publish = false
+authors = { workspace = true }
+edition = { workspace = true }
+repository = { workspace = true }
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+scale-codec = { workspace = true }
+scale-info = { workspace = true }
+static_assertions = "1.1.0"
+log = { workspace = true }
+# Substrate
+sp-api = { workspace = true }
+sp-block-builder = { workspace = true }
+sp-consensus-aura = { workspace = true }
+sp-consensus-grandpa = { workspace = true }
+sp-core = { workspace = true }
+sp-genesis-builder = { workspace = true }
+sp-inherents = { workspace = true }
+sp-offchain = { workspace = true }
+sp-runtime = { workspace = true }
+sp-session = { workspace = true }
+sp-std = { workspace = true }
+sp-transaction-pool = { workspace = true }
+sp-version = { workspace = true }
+# Substrate FRAME
+frame-benchmarking = { workspace = true, optional = true }
+frame-executive = { workspace = true }
+frame-support = { workspace = true }
+frame-system = { workspace = true }
+frame-system-benchmarking = { workspace = true, optional = true }
+frame-system-rpc-runtime-api = { workspace = true }
+pallet-aura = { workspace = true }
+pallet-balances = { workspace = true, features = ["insecure_zero_ed"] }
+pallet-grandpa = { workspace = true }
+pallet-sudo = { workspace = true }
+pallet-timestamp = { workspace = true }
+pallet-transaction-payment = { workspace = true }
+pallet-transaction-payment-rpc-runtime-api = { workspace = true }
+pallet-contracts = { workspace = true }
+pallet-parameters = { workspace = true }
+pallet-insecure-randomness-collective-flip = { workspace = true }
+pallet-assets = { workspace = true }
+pallet-indices = { workspace = true }
+pallet-multisig = { workspace = true }
+pallet-recovery = { workspace = true }
+pallet-session = { workspace = true }
+pallet-authorship = { workspace = true }
+pallet-uniques = { workspace = true }
+pallet-im-online = { workspace = true }
+substrate-validator-set = { workspace = true }
+
+# Frontier
+fp-account = { workspace = true, features = ["serde"] }
+fp-evm = { workspace = true, features = ["serde"] }
+fp-rpc = { workspace = true }
+fp-self-contained = { workspace = true, features = ["serde"] }
+# Frontier FRAME
+pallet-base-fee = { workspace = true }
+pallet-dynamic-fee = { workspace = true }
+pallet-ethereum = { workspace = true }
+pallet-evm = { workspace = true }
+pallet-evm-chain-id = { workspace = true }
+pallet-evm-precompile-modexp = { workspace = true }
+pallet-evm-precompile-sha3fips = { workspace = true }
+pallet-evm-precompile-simple = { workspace = true }
+pallet-hotfix-sufficients = { workspace = true }
+
+[build-dependencies]
+substrate-wasm-builder = { workspace = true, optional = true }
+
+[features]
+default = ["std", "with-rocksdb-weights"]
+with-rocksdb-weights = []
+with-paritydb-weights = []
+std = [
+	"scale-codec/std",
+	"scale-info/std",
+	# Substrate
+	"sp-api/std",
+	"sp-block-builder/std",
+	"sp-consensus-aura/std",
+	"sp-consensus-grandpa/std",
+	"sp-core/std",
+	"sp-genesis-builder/std",
+	"sp-inherents/std",
+	"sp-offchain/std",
+	"sp-runtime/std",
+	"sp-session/std",
+	"sp-std/std",
+	"sp-transaction-pool/std",
+	"sp-version/std",
+	"substrate-wasm-builder",
+	# Substrate FRAME
+	"frame-benchmarking/std",
+	"frame-executive/std",
+	"frame-support/std",
+	"frame-system/std",
+	"frame-system-rpc-runtime-api/std",
+	"frame-system-benchmarking?/std",
+	"pallet-aura/std",
+	"pallet-authorship/std",
+	"pallet-session/std",
+	"pallet-balances/std",
+	"pallet-grandpa/std",
+	"pallet-sudo/std",
+	"pallet-timestamp/std",
+	"pallet-transaction-payment/std",
+	"pallet-transaction-payment-rpc-runtime-api/std",
+	"pallet-contracts/std",
+	"pallet-parameters/std",
+	"pallet-assets/std",
+	"pallet-indices/std",
+	"pallet-multisig/std",
+	"pallet-recovery/std",
+	"pallet-uniques/std",
+	"substrate-validator-set/std",
+	"pallet-im-online/std",
+	# Frontier
+	"fp-account/std",
+	"fp-evm/std",
+	"fp-rpc/std",
+	"fp-self-contained/std",
+	# Frontier FRAME
+	"pallet-base-fee/std",
+	"pallet-dynamic-fee/std",
+	"pallet-ethereum/std",
+	"pallet-evm/std",
+	"pallet-evm-chain-id/std",
+	"pallet-evm-precompile-modexp/std",
+	"pallet-evm-precompile-sha3fips/std",
+	"pallet-evm-precompile-simple/std",
+	"pallet-hotfix-sufficients/std",
+]
+runtime-benchmarks = [
+	"frame-benchmarking/runtime-benchmarks",
+	"frame-system-benchmarking/runtime-benchmarks",
+	"frame-system/runtime-benchmarks",
+	"pallet-balances/runtime-benchmarks",
+	"pallet-grandpa/runtime-benchmarks",
+	"pallet-timestamp/runtime-benchmarks",
+	"pallet-sudo/runtime-benchmarks",
+	"pallet-ethereum/runtime-benchmarks",
+	"pallet-evm/runtime-benchmarks",
+	"pallet-hotfix-sufficients/runtime-benchmarks",
+]
diff --git a/runtime/build.rs b/runtime/build.rs
new file mode 100644
index 0000000..9029164
--- /dev/null
+++ b/runtime/build.rs
@@ -0,0 +1,8 @@
+fn main() {
+	#[cfg(feature = "std")]
+	substrate_wasm_builder::WasmBuilder::new()
+		.with_current_project()
+		.export_heap_base()
+		.import_memory()
+		.build()
+}
diff --git a/runtime/src/assets_api.rs b/runtime/src/assets_api.rs
new file mode 100644
index 0000000..31927fb
--- /dev/null
+++ b/runtime/src/assets_api.rs
@@ -0,0 +1,34 @@
+// This file is part of Substrate.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+//! Runtime API definition for assets.
+
+use scale_codec::Codec;
+use sp_std::vec::Vec;
+
+sp_api::decl_runtime_apis! {
+	pub trait AssetsApi<AccountId, AssetBalance, AssetId>
+	where
+		AccountId: Codec,
+		AssetBalance: Codec,
+		AssetId: Codec,
+	{
+		/// Returns the list of `AssetId`s and corresponding balance that an `AccountId` has.
+		fn account_balances(account: AccountId) -> Vec<(AssetId, AssetBalance)>;
+	}
+}
diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
new file mode 100644
index 0000000..c800c40
--- /dev/null
+++ b/runtime/src/lib.rs
@@ -0,0 +1,1475 @@
+//! The Substrate Node Template runtime. This can be compiled with `#[no_std]`, ready for Wasm.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 256.
+#![recursion_limit = "256"]
+#![allow(clippy::new_without_default, clippy::or_fun_call)]
+#![cfg_attr(feature = "runtime-benchmarks", warn(unused_crate_dependencies))]
+
+// Make the WASM binary available.
+#[cfg(feature = "std")]
+include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
+use scale_codec::{Decode, Encode};
+use sp_api::impl_runtime_apis;
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+use sp_consensus_grandpa::{AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList};
+use sp_core::{
+    crypto::{ByteArray, KeyTypeId},
+    OpaqueMetadata, H160, H256, U256,
+};
+use sp_runtime::{
+    create_runtime_str, generic,
+    generic::Era,
+    impl_opaque_keys,
+    traits::{
+        BlakeTwo256, Block as BlockT, DispatchInfoOf, Dispatchable, Get, IdentifyAccount,
+        IdentityLookup, NumberFor, One, OpaqueKeys, PostDispatchInfoOf, UniqueSaturatedInto,
+        Verify,
+    },
+    transaction_validity::{
+        TransactionPriority, TransactionSource, TransactionValidity, TransactionValidityError,
+    },
+    ApplyExtrinsicResult, ConsensusEngineId, ExtrinsicInclusionMode, Perbill, Permill,
+    SaturatedConversion,
+};
+use sp_std::{marker::PhantomData, prelude::*};
+use sp_version::RuntimeVersion;
+use static_assertions::const_assert;
+// Substrate FRAME
+#[cfg(feature = "with-paritydb-weights")]
+use frame_support::weights::constants::ParityDbWeight as RuntimeDbWeight;
+#[cfg(feature = "with-rocksdb-weights")]
+use frame_support::weights::constants::RocksDbWeight as RuntimeDbWeight;
+use frame_support::{
+    derive_impl,
+    dynamic_params::dynamic_pallet_params,
+    dynamic_params::dynamic_params,
+    genesis_builder_helper::{build_config, create_default_config},
+    pallet_prelude::DispatchClass,
+    parameter_types,
+    traits::{
+        AsEnsureOriginWithArg, ConstBool, ConstU128, ConstU32, ConstU8, EnsureOriginWithArg,
+        FindAuthor, Nothing, OnFinalize, OnTimestampSet,
+    },
+    weights::{
+        constants::{BlockExecutionWeight, ExtrinsicBaseWeight, WEIGHT_REF_TIME_PER_MILLIS},
+        IdentityFee, Weight,
+    },
+};
+use frame_system::{EnsureRoot, EnsureSigned};
+use pallet_transaction_payment::{ConstFeeMultiplier, CurrencyAdapter};
+// Frontier
+use fp_account::EthereumSignature;
+use fp_evm::weight_per_gas;
+use fp_rpc::TransactionStatus;
+use pallet_ethereum::{
+    Call::transact, PostLogContent, Transaction as EthereumTransaction, TransactionAction,
+    TransactionData,
+};
+use pallet_evm::{
+    Account as EVMAccount, EnsureAccountId20, FeeCalculator, IdentityAddressMapping, Runner,
+};
+use pallet_im_online::sr25519::AuthorityId as ImOnlineId;
+
+// A few exports that help ease life for downstream crates.
+pub use frame_system::Call as SystemCall;
+pub use pallet_balances::Call as BalancesCall;
+pub use pallet_timestamp::Call as TimestampCall;
+use pallet_transaction_payment::Multiplier;
+
+mod precompiles;
+
+/// Runtime API definition for assets.
+pub mod assets_api;
+
+use precompiles::FrontierPrecompiles;
+
+/// Type of block number.
+pub type BlockNumber = u32;
+
+/// Alias to 512-bit hash when used in the context of a transaction signature on the chain.
+pub type Signature = EthereumSignature;
+
+/// Some way of identifying an account on the chain. We intentionally make it equivalent
+/// to the public key of our transaction signing scheme.
+pub type AccountId = <<Signature as Verify>::Signer as IdentifyAccount>::AccountId;
+
+/// The type for looking up accounts. We don't expect more than 4 billion of them, but you
+/// never know...
+pub type AccountIndex = u32;
+
+/// Balance of an account.
+pub type Balance = u128;
+
+/// Index of a transaction in the chain.
+pub type Nonce = u32;
+
+/// A hash of some data used by the chain.
+pub type Hash = H256;
+
+/// The hashing algorithm used by the chain.
+pub type Hashing = BlakeTwo256;
+
+/// Digest item type.
+pub type DigestItem = generic::DigestItem;
+
+/// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
+/// the specifics of the runtime. They can then be made to be agnostic over specific formats
+/// of data like extrinsics, allowing for them to continue syncing the network through upgrades
+/// to even the core data structures.
+pub mod opaque {
+    use super::*;
+
+    pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;
+
+    /// Opaque block header type.
+    pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
+    /// Opaque block type.
+    pub type Block = generic::Block<Header, UncheckedExtrinsic>;
+    /// Opaque block identifier type.
+    pub type BlockId = generic::BlockId<Block>;
+
+    impl_opaque_keys! {
+        pub struct SessionKeys {
+            pub aura: Aura,
+            pub grandpa: Grandpa,
+            pub im_online: ImOnline,
+        }
+    }
+}
+
+#[sp_version::runtime_version]
+pub const VERSION: RuntimeVersion = RuntimeVersion {
+    spec_name: create_runtime_str!("aya-node"),
+    impl_name: create_runtime_str!("aya-node"),
+    authoring_version: 1,
+    spec_version: 1,
+    impl_version: 1,
+    apis: RUNTIME_API_VERSIONS,
+    transaction_version: 1,
+    state_version: 1,
+};
+
+pub const MILLISECS_PER_BLOCK: u64 = 6000;
+
+pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;
+
+// Time is measured by number of blocks.
+pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
+pub const HOURS: BlockNumber = MINUTES * 60;
+pub const DAYS: BlockNumber = HOURS * 24;
+
+pub const MILLICENTS: Balance = 1_000_000_000;
+pub const CENTS: Balance = 1_000 * MILLICENTS; // assume this is worth about a cent.
+pub const DOLLARS: Balance = 100 * CENTS;
+
+pub const fn deposit(items: u32, bytes: u32) -> Balance {
+    items as Balance * 15 * CENTS + (bytes as Balance) * 6 * CENTS
+}
+
+/// The version information used to identify this runtime when compiled natively.
+#[cfg(feature = "std")]
+pub fn native_version() -> sp_version::NativeVersion {
+    sp_version::NativeVersion {
+        runtime_version: VERSION,
+        can_author_with: Default::default(),
+    }
+}
+
+/// We assume that ~10% of the block weight is consumed by `on_initialize` handlers.
+/// This is used to limit the maximal weight of a single extrinsic.
+const AVERAGE_ON_INITIALIZE_RATIO: Perbill = Perbill::from_percent(10);
+const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
+/// We allow for 2000ms of compute with a 6 second average block time.
+pub const WEIGHT_MILLISECS_PER_BLOCK: u64 = 2000;
+pub const MAXIMUM_BLOCK_WEIGHT: Weight = Weight::from_parts(
+    WEIGHT_MILLISECS_PER_BLOCK * WEIGHT_REF_TIME_PER_MILLIS,
+    u64::MAX,
+);
+pub const MAXIMUM_BLOCK_LENGTH: u32 = 5 * 1024 * 1024;
+
+parameter_types! {
+    pub const Version: RuntimeVersion = VERSION;
+    pub const BlockHashCount: BlockNumber = 256;
+    pub BlockWeights: frame_system::limits::BlockWeights = frame_system::limits::BlockWeights
+        ::with_sensible_defaults(MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO);
+    pub BlockLength: frame_system::limits::BlockLength = frame_system::limits::BlockLength
+        ::max_with_normal_ratio(MAXIMUM_BLOCK_LENGTH, NORMAL_DISPATCH_RATIO);
+    pub const SS58Prefix: u16 = 1357;
+    pub RuntimeBlockLength: frame_system::limits::BlockLength = frame_system::limits::BlockLength::max_with_normal_ratio(5 * 1024 * 1024, NORMAL_DISPATCH_RATIO);
+    pub RuntimeBlockWeights: frame_system::limits::BlockWeights = frame_system::limits::BlockWeights::builder()
+        .base_block(BlockExecutionWeight::get())
+        .for_class(DispatchClass::all(), |weights| {
+            weights.base_extrinsic = ExtrinsicBaseWeight::get();
+        })
+        .for_class(DispatchClass::Normal, |weights| {
+            weights.max_total = Some(NORMAL_DISPATCH_RATIO * MAXIMUM_BLOCK_WEIGHT);
+        })
+        .for_class(DispatchClass::Operational, |weights| {
+            weights.max_total = Some(MAXIMUM_BLOCK_WEIGHT);
+            // Operational transactions have some extra reserved space, so that they
+            // are included even if block reached `MAXIMUM_BLOCK_WEIGHT`.
+            weights.reserved = Some(
+                MAXIMUM_BLOCK_WEIGHT - NORMAL_DISPATCH_RATIO * MAXIMUM_BLOCK_WEIGHT
+            );
+        })
+        .avg_block_initialization(AVERAGE_ON_INITIALIZE_RATIO)
+        .build_or_panic();
+}
+
+const_assert!(NORMAL_DISPATCH_RATIO.deconstruct() >= AVERAGE_ON_INITIALIZE_RATIO.deconstruct());
+
+// Configure FRAME pallets to include in runtime.
+#[derive_impl(frame_system::config_preludes::SolochainDefaultConfig as frame_system::DefaultConfig)]
+impl frame_system::Config for Runtime {
+    /// The ubiquitous event type.
+    type RuntimeEvent = RuntimeEvent;
+    /// The basic call filter to use in dispatchable.
+    type BaseCallFilter = frame_support::traits::Everything;
+    /// Block & extrinsics weights: base values and limits.
+    type BlockWeights = BlockWeights;
+    /// The maximum length of a block (in bytes).
+    type BlockLength = BlockLength;
+    /// The ubiquitous origin type.
+    type RuntimeOrigin = RuntimeOrigin;
+    /// The aggregated dispatch type that is available for extrinsics.
+    type RuntimeCall = RuntimeCall;
+    /// The aggregated RuntimeTask type.
+    type RuntimeTask = RuntimeTask;
+    /// The index type for storing how many extrinsics an account has signed.
+    type Nonce = Nonce;
+    /// The type for hashing blocks and tries.
+    type Hash = Hash;
+    /// The hashing algorithm used.
+    type Hashing = Hashing;
+    /// The identifier used to distinguish between accounts.
+    type AccountId = AccountId;
+    /// The lookup mechanism to get account ID from whatever is passed in dispatchers.
+    type Lookup = IdentityLookup<AccountId>;
+    /// The block type.
+    type Block = Block;
+    /// Maximum number of block number to block hash mappings to keep (oldest pruned first).
+    type BlockHashCount = BlockHashCount;
+    /// The weight of database operations that the runtime can invoke.
+    type DbWeight = RuntimeDbWeight;
+    /// Version of the runtime.
+    type Version = Version;
+    /// Converts a module to the index of the module in `construct_runtime!`.
+    ///
+    /// This type is being generated by `construct_runtime!`.
+    type PalletInfo = PalletInfo;
+    /// The data to be stored in an account.
+    type AccountData = pallet_balances::AccountData<Balance>;
+    /// What to do if a new account is created.
+    type OnNewAccount = ();
+    /// What to do if an account is fully reaped from the system.
+    type OnKilledAccount = ();
+    /// Weight information for the extrinsics of this pallet.
+    type SystemWeightInfo = ();
+    /// This is used as an identifier of the chain. 42 is the generic substrate prefix.
+    type SS58Prefix = SS58Prefix;
+    /// The set code logic, just the default since we're not a parachain.
+    type OnSetCode = ();
+    type MaxConsumers = ConstU32<16>;
+}
+
+parameter_types! {
+    pub const MaxAuthorities: u32 = 1000;
+}
+
+impl pallet_aura::Config for Runtime {
+    type AuthorityId = AuraId;
+    type MaxAuthorities = MaxAuthorities;
+    type DisabledValidators = ();
+    type AllowMultipleBlocksPerSlot = ConstBool<false>;
+}
+
+impl pallet_grandpa::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type WeightInfo = ();
+    type MaxAuthorities = MaxAuthorities;
+    type MaxNominators = ConstU32<0>;
+    type MaxSetIdSessionEntries = ();
+    type KeyOwnerProof = sp_core::Void;
+    type EquivocationReportSystem = ();
+}
+
+parameter_types! {
+    pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
+    pub storage EnableManualSeal: bool = false;
+}
+
+pub struct ConsensusOnTimestampSet<T>(PhantomData<T>);
+impl<T: pallet_aura::Config> OnTimestampSet<T::Moment> for ConsensusOnTimestampSet<T> {
+    fn on_timestamp_set(moment: T::Moment) {
+        if EnableManualSeal::get() {
+            return;
+        }
+        <pallet_aura::Pallet<T> as OnTimestampSet<T::Moment>>::on_timestamp_set(moment)
+    }
+}
+
+impl pallet_timestamp::Config for Runtime {
+    /// A timestamp: milliseconds since the unix epoch.
+    type Moment = u64;
+    type OnTimestampSet = ConsensusOnTimestampSet<Self>;
+    type MinimumPeriod = MinimumPeriod;
+    type WeightInfo = ();
+}
+
+parameter_types! {
+    pub const MinAuthorities: u32 = 2;
+}
+
+impl substrate_validator_set::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type AddRemoveOrigin = EnsureRoot<AccountId>;
+    type MinAuthorities = MinAuthorities;
+    type WeightInfo = ();
+}
+
+parameter_types! {
+    pub const Period: u32 = 2 * MINUTES;
+    pub const Offset: u32 = 0;
+}
+
+impl pallet_session::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type ValidatorId = AccountId;
+    type ValidatorIdOf = substrate_validator_set::ValidatorOf<Self>;
+    type ShouldEndSession = pallet_session::PeriodicSessions<Period, Offset>;
+    type NextSessionRotation = pallet_session::PeriodicSessions<Period, Offset>;
+    type SessionManager = ValidatorSet;
+    type SessionHandler = <opaque::SessionKeys as OpaqueKeys>::KeyTypeIdProviders;
+    type Keys = opaque::SessionKeys;
+    type WeightInfo = pallet_session::weights::SubstrateWeight<Runtime>;
+}
+
+parameter_types! {
+    pub const ImOnlineUnsignedPriority: TransactionPriority = TransactionPriority::max_value();
+    pub const MaxKeys: u32 = 10_000;
+    pub const MaxPeerInHeartbeats: u32 = 10_000;
+    pub const MaxPeerDataEncodingSize: u32 = 1_000;
+}
+
+impl<LocalCall> frame_system::offchain::CreateSignedTransaction<LocalCall> for Runtime
+where
+    RuntimeCall: From<LocalCall>,
+{
+    fn create_transaction<C: frame_system::offchain::AppCrypto<Self::Public, Self::Signature>>(
+        call: RuntimeCall,
+        public: <Signature as Verify>::Signer,
+        account: AccountId,
+        nonce: Nonce,
+    ) -> Option<(
+        RuntimeCall,
+        <UncheckedExtrinsic as sp_runtime::traits::Extrinsic>::SignaturePayload,
+    )> {
+        let tip = 0;
+        let period = BlockHashCount::get()
+            .checked_next_power_of_two()
+            .map(|c| c / 2)
+            .unwrap_or(2) as u64;
+        let current_block = System::block_number()
+            .saturated_into::<u64>()
+            .saturating_sub(1);
+        let era = Era::mortal(period, current_block);
+        let extra = (
+            frame_system::CheckNonZeroSender::<Runtime>::new(),
+            frame_system::CheckSpecVersion::<Runtime>::new(),
+            frame_system::CheckTxVersion::<Runtime>::new(),
+            frame_system::CheckGenesis::<Runtime>::new(),
+            frame_system::CheckEra::<Runtime>::from(era),
+            frame_system::CheckNonce::<Runtime>::from(nonce),
+            frame_system::CheckWeight::<Runtime>::new(),
+            pallet_transaction_payment::ChargeTransactionPayment::<Runtime>::from(tip),
+        );
+        let raw_payload = SignedPayload::new(call, extra)
+            .map_err(|e| {
+                log::warn!("Unable to create signed payload: {:?}", e);
+            })
+            .ok()?;
+        let signature = raw_payload.using_encoded(|payload| C::sign(payload, public))?;
+        let address = account;
+        let (call, extra, _) = raw_payload.deconstruct();
+        Some((call, (address, signature.into(), extra)))
+    }
+}
+
+impl frame_system::offchain::SigningTypes for Runtime {
+    type Public = <Signature as Verify>::Signer;
+    type Signature = Signature;
+}
+
+impl<C> frame_system::offchain::SendTransactionTypes<C> for Runtime
+where
+    RuntimeCall: From<C>,
+{
+    type Extrinsic = UncheckedExtrinsic;
+    type OverarchingCall = RuntimeCall;
+}
+
+impl pallet_im_online::Config for Runtime {
+    type AuthorityId = ImOnlineId;
+    type RuntimeEvent = RuntimeEvent;
+    type NextSessionRotation = pallet_session::PeriodicSessions<Period, Offset>;
+    type ValidatorSet = ValidatorSet;
+    type ReportUnresponsiveness = ValidatorSet;
+    type UnsignedPriority = ImOnlineUnsignedPriority;
+    type WeightInfo = pallet_im_online::weights::SubstrateWeight<Runtime>;
+    type MaxKeys = MaxKeys;
+    type MaxPeerInHeartbeats = MaxPeerInHeartbeats;
+}
+
+parameter_types! {
+    pub const ExistentialDeposit: u128 = 0;
+    // For weight estimation, we assume that the most locks on an individual account will be 50.
+    // This number may need to be adjusted in the future if this assumption no longer holds true.
+    pub const MaxLocks: u32 = 50;
+    pub const MaxReserves: u32 = 50;
+}
+
+impl pallet_balances::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type RuntimeHoldReason = RuntimeHoldReason;
+    type RuntimeFreezeReason = RuntimeFreezeReason;
+    type WeightInfo = pallet_balances::weights::SubstrateWeight<Self>;
+    type Balance = Balance;
+    type DustRemoval = ();
+    type ExistentialDeposit = ExistentialDeposit;
+    type AccountStore = System;
+    type ReserveIdentifier = [u8; 8];
+    type FreezeIdentifier = RuntimeFreezeReason;
+    type MaxLocks = MaxLocks;
+    type MaxReserves = MaxReserves;
+    type MaxFreezes = ConstU32<1>;
+}
+
+parameter_types! {
+    pub FeeMultiplier: Multiplier = Multiplier::one();
+}
+
+impl pallet_transaction_payment::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type OnChargeTransaction = CurrencyAdapter<Balances, ()>;
+    type WeightToFee = IdentityFee<Balance>;
+    type LengthToFee = IdentityFee<Balance>;
+    type FeeMultiplierUpdate = ConstFeeMultiplier<FeeMultiplier>;
+    type OperationalFeeMultiplier = ConstU8<5>;
+}
+
+impl pallet_sudo::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type RuntimeCall = RuntimeCall;
+    type WeightInfo = pallet_sudo::weights::SubstrateWeight<Self>;
+}
+
+parameter_types! {
+    pub Schedule: pallet_contracts::Schedule<Runtime> = Default::default();
+    pub CodeHashLockupDepositPercent: Perbill = Perbill::from_percent(30);
+}
+
+impl pallet_contracts::Config for Runtime {
+    type Time = Timestamp;
+    type Randomness = RandomnessCollectiveFlip;
+    type Currency = Balances;
+    type RuntimeEvent = RuntimeEvent;
+    type RuntimeCall = RuntimeCall;
+    /// The safest default is to allow no calls at all.
+    ///
+    /// Runtimes should whitelist dispatchables that are allowed to be called from contracts
+    /// and make sure they are stable. Dispatchables exposed to contracts are not allowed to
+    /// change because that would break already deployed contracts. The `Call` structure itself
+    /// is not allowed to change the indices of existing pallets, too.
+    type CallFilter = Nothing;
+    type DepositPerItem = dynamic_params::contracts::DepositPerItem;
+    type DepositPerByte = dynamic_params::contracts::DepositPerByte;
+    type DefaultDepositLimit = dynamic_params::contracts::DefaultDepositLimit;
+    type CallStack = [pallet_contracts::Frame<Self>; 5];
+    type WeightPrice = pallet_transaction_payment::Pallet<Self>;
+    type WeightInfo = pallet_contracts::weights::SubstrateWeight<Self>;
+    type ChainExtension = ();
+    type Schedule = Schedule;
+    type AddressGenerator = pallet_contracts::DefaultAddressGenerator;
+    type MaxCodeLen = ConstU32<{ 123 * 1024 }>;
+    type MaxStorageKeyLen = ConstU32<128>;
+    type UnsafeUnstableInterface = ConstBool<false>;
+    type UploadOrigin = EnsureSigned<Self::AccountId>;
+    type InstantiateOrigin = EnsureSigned<Self::AccountId>;
+    type MaxDebugBufferLen = ConstU32<{ 2 * 1024 * 1024 }>;
+    type RuntimeHoldReason = RuntimeHoldReason;
+    #[cfg(not(feature = "runtime-benchmarks"))]
+    type Migrations = ();
+    #[cfg(feature = "runtime-benchmarks")]
+    type Migrations = pallet_contracts::migration::codegen::BenchMigrations;
+    type MaxDelegateDependencies = ConstU32<32>;
+    type CodeHashLockupDepositPercent = CodeHashLockupDepositPercent;
+    type Debug = ();
+    type Environment = ();
+    type ApiVersion = ();
+    type Xcm = ();
+}
+
+parameter_types! {
+    pub const IndexDeposit: Balance = 1 * DOLLARS;
+}
+
+impl pallet_indices::Config for Runtime {
+    type AccountIndex = AccountIndex;
+    type Currency = Balances;
+    type Deposit = IndexDeposit;
+    type RuntimeEvent = RuntimeEvent;
+    type WeightInfo = pallet_indices::weights::SubstrateWeight<Runtime>;
+}
+
+parameter_types! {
+    pub const AssetDeposit: Balance = 100 * DOLLARS;
+    pub const ApprovalDeposit: Balance = 1 * DOLLARS;
+    pub const StringLimit: u32 = 50;
+    pub const MetadataDepositBase: Balance = 10 * DOLLARS;
+    pub const MetadataDepositPerByte: Balance = 1 * DOLLARS;
+}
+impl pallet_assets::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type Balance = u128;
+    type AssetId = u32;
+    type AssetIdParameter = scale_codec::Compact<u32>;
+    type Currency = Balances;
+    type CreateOrigin = AsEnsureOriginWithArg<EnsureSigned<AccountId>>;
+    type ForceOrigin = EnsureRoot<AccountId>;
+    type AssetDeposit = crate::AssetDeposit;
+    type AssetAccountDeposit = ConstU128<DOLLARS>;
+    type MetadataDepositBase = crate::MetadataDepositBase;
+    type MetadataDepositPerByte = crate::MetadataDepositPerByte;
+    type ApprovalDeposit = crate::ApprovalDeposit;
+    type StringLimit = crate::StringLimit;
+    type Freezer = ();
+    type Extra = ();
+    type CallbackHandle = ();
+    type WeightInfo = pallet_assets::weights::SubstrateWeight<Runtime>;
+    type RemoveItemsLimit = ConstU32<1000>;
+}
+
+parameter_types! {
+    pub const CollectionDeposit: Balance = 100 * DOLLARS;
+    pub const ItemDeposit: Balance = 1 * DOLLARS;
+    pub const ApprovalsLimit: u32 = 20;
+    pub const ItemAttributesApprovalsLimit: u32 = 20;
+    pub const MaxTips: u32 = 10;
+    pub const MaxDeadlineDuration: BlockNumber = 12 * 30 * DAYS;
+}
+
+impl pallet_uniques::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type CollectionId = u32;
+    type ItemId = u32;
+    type Currency = Balances;
+    type ForceOrigin = frame_system::EnsureRoot<AccountId>;
+    type CollectionDeposit = CollectionDeposit;
+    type ItemDeposit = ItemDeposit;
+    type MetadataDepositBase = MetadataDepositBase;
+    type AttributeDepositBase = MetadataDepositBase;
+    type DepositPerByte = MetadataDepositPerByte;
+    type StringLimit = ConstU32<128>;
+    type KeyLimit = ConstU32<32>;
+    type ValueLimit = ConstU32<64>;
+    type WeightInfo = pallet_uniques::weights::SubstrateWeight<Runtime>;
+    type CreateOrigin = AsEnsureOriginWithArg<EnsureSigned<AccountId>>;
+    type Locker = ();
+}
+
+impl pallet_evm_chain_id::Config for Runtime {}
+
+parameter_types! {
+    pub const ConfigDepositBase: Balance = 5 * DOLLARS;
+    pub const FriendDepositFactor: Balance = 50 * CENTS;
+    pub const MaxFriends: u16 = 9;
+    pub const RecoveryDeposit: Balance = 5 * DOLLARS;
+}
+
+impl pallet_recovery::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type WeightInfo = pallet_recovery::weights::SubstrateWeight<Runtime>;
+    type RuntimeCall = RuntimeCall;
+    type Currency = Balances;
+    type ConfigDepositBase = ConfigDepositBase;
+    type FriendDepositFactor = FriendDepositFactor;
+    type MaxFriends = MaxFriends;
+    type RecoveryDeposit = RecoveryDeposit;
+}
+
+pub struct FindAuthorTruncated<F>(PhantomData<F>);
+impl<F: FindAuthor<u32>> FindAuthor<H160> for FindAuthorTruncated<F> {
+    fn find_author<'a, I>(digests: I) -> Option<H160>
+    where
+        I: 'a + IntoIterator<Item = (ConsensusEngineId, &'a [u8])>,
+    {
+        if let Some(author_index) = F::find_author(digests) {
+            let authority_id = Aura::authorities()[author_index as usize].clone();
+            return Some(H160::from_slice(&authority_id.to_raw_vec()[4..24]));
+        }
+        None
+    }
+}
+
+const BLOCK_GAS_LIMIT: u64 = 75_000_000;
+const MAX_POV_SIZE: u64 = 5 * 1024 * 1024;
+
+parameter_types! {
+    pub BlockGasLimit: U256 = U256::from(BLOCK_GAS_LIMIT);
+    pub const GasLimitPovSizeRatio: u64 = BLOCK_GAS_LIMIT.saturating_div(MAX_POV_SIZE);
+    pub PrecompilesValue: FrontierPrecompiles<Runtime> = FrontierPrecompiles::<_>::new();
+    pub WeightPerGas: Weight = Weight::from_parts(weight_per_gas(BLOCK_GAS_LIMIT, NORMAL_DISPATCH_RATIO, WEIGHT_MILLISECS_PER_BLOCK), 0);
+    pub SuicideQuickClearLimit: u32 = 0;
+}
+
+impl pallet_evm::Config for Runtime {
+    type FeeCalculator = BaseFee;
+    type GasWeightMapping = pallet_evm::FixedGasWeightMapping<Self>;
+    type WeightPerGas = WeightPerGas;
+    type BlockHashMapping = pallet_ethereum::EthereumBlockHashMapping<Self>;
+    type CallOrigin = EnsureAccountId20;
+    type WithdrawOrigin = EnsureAccountId20;
+    type AddressMapping = IdentityAddressMapping;
+    type Currency = Balances;
+    type RuntimeEvent = RuntimeEvent;
+    type PrecompilesType = FrontierPrecompiles<Self>;
+    type PrecompilesValue = PrecompilesValue;
+    type ChainId = EVMChainId;
+    type BlockGasLimit = BlockGasLimit;
+    type Runner = pallet_evm::runner::stack::Runner<Self>;
+    type OnChargeTransaction = ();
+    type OnCreate = ();
+    type FindAuthor = FindAuthorTruncated<Aura>;
+    type GasLimitPovSizeRatio = GasLimitPovSizeRatio;
+    type SuicideQuickClearLimit = SuicideQuickClearLimit;
+    type Timestamp = Timestamp;
+    type WeightInfo = pallet_evm::weights::SubstrateWeight<Self>;
+}
+
+parameter_types! {
+    pub const PostBlockAndTxnHashes: PostLogContent = PostLogContent::BlockAndTxnHashes;
+}
+
+impl pallet_ethereum::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type StateRoot = pallet_ethereum::IntermediateStateRoot<Self>;
+    type PostLogContent = PostBlockAndTxnHashes;
+    type ExtraDataLength = ConstU32<30>;
+}
+
+parameter_types! {
+    pub BoundDivision: U256 = U256::from(1024);
+}
+
+impl pallet_dynamic_fee::Config for Runtime {
+    type MinGasPriceBoundDivisor = BoundDivision;
+}
+
+parameter_types! {
+    pub DefaultBaseFeePerGas: U256 = U256::from(1_000_000_000);
+    pub DefaultElasticity: Permill = Permill::from_parts(125_000);
+}
+
+pub struct BaseFeeThreshold;
+impl pallet_base_fee::BaseFeeThreshold for BaseFeeThreshold {
+    fn lower() -> Permill {
+        Permill::zero()
+    }
+    fn ideal() -> Permill {
+        Permill::from_parts(500_000)
+    }
+    fn upper() -> Permill {
+        Permill::from_parts(1_000_000)
+    }
+}
+
+impl pallet_base_fee::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type Threshold = BaseFeeThreshold;
+    type DefaultBaseFeePerGas = DefaultBaseFeePerGas;
+    type DefaultElasticity = DefaultElasticity;
+}
+
+impl pallet_hotfix_sufficients::Config for Runtime {
+    type AddressMapping = IdentityAddressMapping;
+    type WeightInfo = pallet_hotfix_sufficients::weights::SubstrateWeight<Self>;
+}
+
+pub struct DynamicParametersManagerOrigin;
+impl EnsureOriginWithArg<RuntimeOrigin, RuntimeParametersKey> for DynamicParametersManagerOrigin {
+    type Success = ();
+
+    fn try_origin(
+        origin: RuntimeOrigin,
+        key: &RuntimeParametersKey,
+    ) -> Result<Self::Success, RuntimeOrigin> {
+        match key {
+            RuntimeParametersKey::Storage(_) => {
+                frame_system::ensure_root(origin.clone()).map_err(|_| origin)?;
+                return Ok(());
+            }
+            RuntimeParametersKey::Contract(_) => {
+                frame_system::ensure_root(origin.clone()).map_err(|_| origin)?;
+                return Ok(());
+            }
+        }
+    }
+
+    #[cfg(feature = "runtime-benchmarks")]
+    fn try_successful_origin(_key: &RuntimeParametersKey) -> Result<RuntimeOrigin, ()> {
+        Ok(RuntimeOrigin::root())
+    }
+}
+
+impl pallet_parameters::Config for Runtime {
+    type RuntimeParameters = RuntimeParameters;
+    type RuntimeEvent = RuntimeEvent;
+    type AdminOrigin = DynamicParametersManagerOrigin;
+    type WeightInfo = ();
+}
+
+#[frame_support::pallet]
+pub mod pallet_manual_seal {
+    use super::*;
+    use frame_support::pallet_prelude::*;
+
+    #[pallet::pallet]
+    pub struct Pallet<T>(PhantomData<T>);
+
+    #[pallet::config]
+    pub trait Config: frame_system::Config {}
+
+    #[pallet::genesis_config]
+    #[derive(frame_support::DefaultNoBound)]
+    pub struct GenesisConfig<T> {
+        pub enable: bool,
+        #[serde(skip)]
+        pub _config: PhantomData<T>,
+    }
+
+    #[pallet::genesis_build]
+    impl<T: Config> BuildGenesisConfig for GenesisConfig<T> {
+        fn build(&self) {
+            EnableManualSeal::set(&self.enable);
+        }
+    }
+}
+
+impl pallet_manual_seal::Config for Runtime {}
+
+impl pallet_insecure_randomness_collective_flip::Config for Runtime {}
+
+// Create the runtime by composing the FRAME pallets that were previously configured.
+frame_support::construct_runtime!(
+    pub enum Runtime {
+        System: frame_system,
+        Timestamp: pallet_timestamp,
+        Balances: pallet_balances,
+        ValidatorSet: substrate_validator_set,
+        Session: pallet_session,
+        ImOnline: pallet_im_online,
+        Aura: pallet_aura,
+        Grandpa: pallet_grandpa,
+        TransactionPayment: pallet_transaction_payment,
+        Sudo: pallet_sudo,
+        Ethereum: pallet_ethereum,
+        EVM: pallet_evm,
+        EVMChainId: pallet_evm_chain_id,
+        DynamicFee: pallet_dynamic_fee,
+        BaseFee: pallet_base_fee,
+        HotfixSufficients: pallet_hotfix_sufficients,
+        ManualSeal: pallet_manual_seal,
+        Contracts : pallet_contracts,
+        Parameters: pallet_parameters,
+        RandomnessCollectiveFlip: pallet_insecure_randomness_collective_flip,
+        Assets: pallet_assets,
+        Indices: pallet_indices,
+        Multisig: pallet_multisig,
+        Recovery: pallet_recovery,
+        Uniques: pallet_uniques,
+    }
+);
+
+parameter_types! {
+    // One storage item; key size is 32; value is size 4+4+16+32 bytes = 56 bytes.
+    pub const DepositBase: Balance = deposit(1, 88);
+    // Additional storage item size of 32 bytes.
+    pub const DepositFactor: Balance = deposit(0, 32);
+}
+
+impl pallet_multisig::Config for Runtime {
+    type RuntimeEvent = RuntimeEvent;
+    type RuntimeCall = RuntimeCall;
+    type Currency = Balances;
+    type DepositBase = DepositBase;
+    type DepositFactor = DepositFactor;
+    type MaxSignatories = ConstU32<100>;
+    type WeightInfo = pallet_multisig::weights::SubstrateWeight<Runtime>;
+}
+
+#[derive(Clone)]
+pub struct TransactionConverter;
+
+impl fp_rpc::ConvertTransaction<UncheckedExtrinsic> for TransactionConverter {
+    fn convert_transaction(&self, transaction: pallet_ethereum::Transaction) -> UncheckedExtrinsic {
+        UncheckedExtrinsic::new_unsigned(
+            pallet_ethereum::Call::<Runtime>::transact { transaction }.into(),
+        )
+    }
+}
+
+impl fp_rpc::ConvertTransaction<opaque::UncheckedExtrinsic> for TransactionConverter {
+    fn convert_transaction(
+        &self,
+        transaction: pallet_ethereum::Transaction,
+    ) -> opaque::UncheckedExtrinsic {
+        let extrinsic = UncheckedExtrinsic::new_unsigned(
+            pallet_ethereum::Call::<Runtime>::transact { transaction }.into(),
+        );
+        let encoded = extrinsic.encode();
+        opaque::UncheckedExtrinsic::decode(&mut &encoded[..])
+            .expect("Encoded extrinsic is always valid")
+    }
+}
+
+/// The address format for describing accounts.
+pub type Address = AccountId;
+/// Block header type as expected by this runtime.
+pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
+/// Block type as expected by this runtime.
+pub type Block = generic::Block<Header, UncheckedExtrinsic>;
+/// A Block signed with a Justification
+pub type SignedBlock = generic::SignedBlock<Block>;
+/// BlockId type as expected by this runtime.
+pub type BlockId = generic::BlockId<Block>;
+/// The SignedExtension to the basic transaction logic.
+pub type SignedExtra = (
+    frame_system::CheckNonZeroSender<Runtime>,
+    frame_system::CheckSpecVersion<Runtime>,
+    frame_system::CheckTxVersion<Runtime>,
+    frame_system::CheckGenesis<Runtime>,
+    frame_system::CheckEra<Runtime>,
+    frame_system::CheckNonce<Runtime>,
+    frame_system::CheckWeight<Runtime>,
+    pallet_transaction_payment::ChargeTransactionPayment<Runtime>,
+);
+/// Unchecked extrinsic type as expected by this runtime.
+pub type UncheckedExtrinsic =
+    fp_self_contained::UncheckedExtrinsic<Address, RuntimeCall, Signature, SignedExtra>;
+/// Extrinsic type that has already been checked.
+pub type CheckedExtrinsic =
+    fp_self_contained::CheckedExtrinsic<AccountId, RuntimeCall, SignedExtra, H160>;
+/// The payload being signed in transactions.
+pub type SignedPayload = generic::SignedPayload<RuntimeCall, SignedExtra>;
+/// Executive: handles dispatch to the various modules.
+pub type Executive = frame_executive::Executive<
+    Runtime,
+    Block,
+    frame_system::ChainContext<Runtime>,
+    Runtime,
+    AllPalletsWithSystem,
+>;
+
+type EventRecord = frame_system::EventRecord<
+    <Runtime as frame_system::Config>::RuntimeEvent,
+    <Runtime as frame_system::Config>::Hash,
+>;
+
+impl fp_self_contained::SelfContainedCall for RuntimeCall {
+    type SignedInfo = H160;
+
+    fn is_self_contained(&self) -> bool {
+        match self {
+            RuntimeCall::Ethereum(call) => call.is_self_contained(),
+            _ => false,
+        }
+    }
+
+    fn check_self_contained(&self) -> Option<Result<Self::SignedInfo, TransactionValidityError>> {
+        match self {
+            RuntimeCall::Ethereum(call) => call.check_self_contained(),
+            _ => None,
+        }
+    }
+
+    fn validate_self_contained(
+        &self,
+        info: &Self::SignedInfo,
+        dispatch_info: &DispatchInfoOf<RuntimeCall>,
+        len: usize,
+    ) -> Option<TransactionValidity> {
+        match self {
+            RuntimeCall::Ethereum(call) => call.validate_self_contained(info, dispatch_info, len),
+            _ => None,
+        }
+    }
+
+    fn pre_dispatch_self_contained(
+        &self,
+        info: &Self::SignedInfo,
+        dispatch_info: &DispatchInfoOf<RuntimeCall>,
+        len: usize,
+    ) -> Option<Result<(), TransactionValidityError>> {
+        match self {
+            RuntimeCall::Ethereum(call) => {
+                call.pre_dispatch_self_contained(info, dispatch_info, len)
+            }
+            _ => None,
+        }
+    }
+
+    fn apply_self_contained(
+        self,
+        info: Self::SignedInfo,
+    ) -> Option<sp_runtime::DispatchResultWithInfo<PostDispatchInfoOf<Self>>> {
+        match self {
+            call @ RuntimeCall::Ethereum(pallet_ethereum::Call::transact { .. }) => {
+                Some(call.dispatch(RuntimeOrigin::from(
+                    pallet_ethereum::RawOrigin::EthereumTransaction(info),
+                )))
+            }
+            _ => None,
+        }
+    }
+}
+
+#[cfg(feature = "runtime-benchmarks")]
+#[macro_use]
+extern crate frame_benchmarking;
+
+#[cfg(feature = "runtime-benchmarks")]
+mod benches {
+    define_benchmarks!(
+        [frame_benchmarking, BaselineBench::<Runtime>]
+        [frame_system, SystemBench::<Runtime>]
+        [pallet_balances, Balances]
+        [pallet_timestamp, Timestamp]
+        [pallet_sudo, Sudo]
+        [pallet_contracts, Contracts]
+        [pallet_parameters, Parameters]
+        [pallet_evm, EVM]
+    );
+}
+
+impl_runtime_apis! {
+    impl sp_api::Core<Block> for Runtime {
+        fn version() -> RuntimeVersion {
+            VERSION
+        }
+
+        fn execute_block(block: Block) {
+            Executive::execute_block(block)
+        }
+
+        fn initialize_block(header: &<Block as BlockT>::Header) -> ExtrinsicInclusionMode {
+            Executive::initialize_block(header)
+        }
+    }
+
+    impl sp_api::Metadata<Block> for Runtime {
+        fn metadata() -> OpaqueMetadata {
+            OpaqueMetadata::new(Runtime::metadata().into())
+        }
+
+        fn metadata_at_version(version: u32) -> Option<OpaqueMetadata> {
+            Runtime::metadata_at_version(version)
+        }
+
+        fn metadata_versions() -> Vec<u32> {
+            Runtime::metadata_versions()
+        }
+    }
+
+    impl sp_block_builder::BlockBuilder<Block> for Runtime {
+        fn apply_extrinsic(extrinsic: <Block as BlockT>::Extrinsic) -> ApplyExtrinsicResult {
+            Executive::apply_extrinsic(extrinsic)
+        }
+
+        fn finalize_block() -> <Block as BlockT>::Header {
+            Executive::finalize_block()
+        }
+
+        fn inherent_extrinsics(data: sp_inherents::InherentData) -> Vec<<Block as BlockT>::Extrinsic> {
+            data.create_extrinsics()
+        }
+
+        fn check_inherents(
+            block: Block,
+            data: sp_inherents::InherentData,
+        ) -> sp_inherents::CheckInherentsResult {
+            data.check_extrinsics(&block)
+        }
+    }
+
+    impl sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block> for Runtime {
+        fn validate_transaction(
+            source: TransactionSource,
+            tx: <Block as BlockT>::Extrinsic,
+            block_hash: <Block as BlockT>::Hash,
+        ) -> TransactionValidity {
+            Executive::validate_transaction(source, tx, block_hash)
+        }
+    }
+
+    impl sp_offchain::OffchainWorkerApi<Block> for Runtime {
+        fn offchain_worker(header: &<Block as BlockT>::Header) {
+            Executive::offchain_worker(header)
+        }
+    }
+
+    impl sp_genesis_builder::GenesisBuilder<Block> for Runtime {
+        fn create_default_config() -> Vec<u8> {
+            create_default_config::<RuntimeGenesisConfig>()
+        }
+
+        fn build_config(config: Vec<u8>) -> sp_genesis_builder::Result {
+            build_config::<RuntimeGenesisConfig>(config)
+        }
+    }
+
+    impl sp_session::SessionKeys<Block> for Runtime {
+        fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
+            opaque::SessionKeys::generate(seed)
+        }
+
+        fn decode_session_keys(
+            encoded: Vec<u8>,
+        ) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
+            opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
+        }
+    }
+
+    impl sp_consensus_aura::AuraApi<Block, AuraId> for Runtime {
+        fn slot_duration() -> sp_consensus_aura::SlotDuration {
+            sp_consensus_aura::SlotDuration::from_millis(Aura::slot_duration())
+        }
+
+        fn authorities() -> Vec<AuraId> {
+            Aura::authorities().to_vec()
+        }
+    }
+
+    impl sp_consensus_grandpa::GrandpaApi<Block> for Runtime {
+        fn grandpa_authorities() -> GrandpaAuthorityList {
+            Grandpa::grandpa_authorities()
+        }
+
+        fn current_set_id() -> sp_consensus_grandpa::SetId {
+            Grandpa::current_set_id()
+        }
+
+        fn submit_report_equivocation_unsigned_extrinsic(
+            _equivocation_proof: sp_consensus_grandpa::EquivocationProof<
+                <Block as BlockT>::Hash,
+                NumberFor<Block>,
+            >,
+            _key_owner_proof: sp_consensus_grandpa::OpaqueKeyOwnershipProof,
+        ) -> Option<()> {
+            None
+        }
+
+        fn generate_key_ownership_proof(
+            _set_id: sp_consensus_grandpa::SetId,
+            _authority_id: GrandpaId,
+        ) -> Option<sp_consensus_grandpa::OpaqueKeyOwnershipProof> {
+            // NOTE: this is the only implementation possible since we've
+            // defined our key owner proof type as a bottom type (i.e. a type
+            // with no values).
+            None
+        }
+    }
+
+    impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
+        fn account_nonce(account: AccountId) -> Nonce {
+            System::account_nonce(account)
+        }
+    }
+
+    impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<
+        Block,
+        Balance,
+    > for Runtime {
+        fn query_info(
+            uxt: <Block as BlockT>::Extrinsic,
+            len: u32
+        ) -> pallet_transaction_payment_rpc_runtime_api::RuntimeDispatchInfo<Balance> {
+            TransactionPayment::query_info(uxt, len)
+        }
+
+        fn query_fee_details(
+            uxt: <Block as BlockT>::Extrinsic,
+            len: u32,
+        ) -> pallet_transaction_payment::FeeDetails<Balance> {
+            TransactionPayment::query_fee_details(uxt, len)
+        }
+
+        fn query_weight_to_fee(weight: Weight) -> Balance {
+            TransactionPayment::weight_to_fee(weight)
+        }
+
+        fn query_length_to_fee(length: u32) -> Balance {
+            TransactionPayment::length_to_fee(length)
+        }
+    }
+
+    impl fp_rpc::EthereumRuntimeRPCApi<Block> for Runtime {
+        fn chain_id() -> u64 {
+            <Runtime as pallet_evm::Config>::ChainId::get()
+        }
+
+        fn account_basic(address: H160) -> EVMAccount {
+            let (account, _) = pallet_evm::Pallet::<Runtime>::account_basic(&address);
+            account
+        }
+
+        fn gas_price() -> U256 {
+            let (gas_price, _) = <Runtime as pallet_evm::Config>::FeeCalculator::min_gas_price();
+            gas_price
+        }
+
+        fn account_code_at(address: H160) -> Vec<u8> {
+            pallet_evm::AccountCodes::<Runtime>::get(address)
+        }
+
+        fn author() -> H160 {
+            <pallet_evm::Pallet<Runtime>>::find_author()
+        }
+
+        fn storage_at(address: H160, index: U256) -> H256 {
+            let mut tmp = [0u8; 32];
+            index.to_big_endian(&mut tmp);
+            pallet_evm::AccountStorages::<Runtime>::get(address, H256::from_slice(&tmp[..]))
+        }
+
+        fn call(
+            from: H160,
+            to: H160,
+            data: Vec<u8>,
+            value: U256,
+            gas_limit: U256,
+            max_fee_per_gas: Option<U256>,
+            max_priority_fee_per_gas: Option<U256>,
+            nonce: Option<U256>,
+            estimate: bool,
+            access_list: Option<Vec<(H160, Vec<H256>)>>,
+        ) -> Result<pallet_evm::CallInfo, sp_runtime::DispatchError> {
+            let config = if estimate {
+                let mut config = <Runtime as pallet_evm::Config>::config().clone();
+                config.estimate = true;
+                Some(config)
+            } else {
+                None
+            };
+
+            let gas_limit = gas_limit.min(u64::MAX.into());
+            let transaction_data = TransactionData::new(
+                TransactionAction::Call(to),
+                data.clone(),
+                nonce.unwrap_or_default(),
+                gas_limit,
+                None,
+                max_fee_per_gas,
+                max_priority_fee_per_gas,
+                value,
+                Some(<Runtime as pallet_evm::Config>::ChainId::get()),
+                access_list.clone().unwrap_or_default(),
+            );
+            let (weight_limit, proof_size_base_cost) = pallet_ethereum::Pallet::<Runtime>::transaction_weight(&transaction_data);
+
+            <Runtime as pallet_evm::Config>::Runner::call(
+                from,
+                to,
+                data,
+                value,
+                gas_limit.unique_saturated_into(),
+                max_fee_per_gas,
+                max_priority_fee_per_gas,
+                nonce,
+                access_list.unwrap_or_default(),
+                false,
+                true,
+                weight_limit,
+                proof_size_base_cost,
+                config.as_ref().unwrap_or(<Runtime as pallet_evm::Config>::config()),
+            ).map_err(|err| err.error.into())
+        }
+
+        fn create(
+            from: H160,
+            data: Vec<u8>,
+            value: U256,
+            gas_limit: U256,
+            max_fee_per_gas: Option<U256>,
+            max_priority_fee_per_gas: Option<U256>,
+            nonce: Option<U256>,
+            estimate: bool,
+            access_list: Option<Vec<(H160, Vec<H256>)>>,
+        ) -> Result<pallet_evm::CreateInfo, sp_runtime::DispatchError> {
+            let config = if estimate {
+                let mut config = <Runtime as pallet_evm::Config>::config().clone();
+                config.estimate = true;
+                Some(config)
+            } else {
+                None
+            };
+
+            let transaction_data = TransactionData::new(
+                TransactionAction::Create,
+                data.clone(),
+                nonce.unwrap_or_default(),
+                gas_limit,
+                None,
+                max_fee_per_gas,
+                max_priority_fee_per_gas,
+                value,
+                Some(<Runtime as pallet_evm::Config>::ChainId::get()),
+                access_list.clone().unwrap_or_default(),
+            );
+            let (weight_limit, proof_size_base_cost) = pallet_ethereum::Pallet::<Runtime>::transaction_weight(&transaction_data);
+
+            <Runtime as pallet_evm::Config>::Runner::create(
+                from,
+                data,
+                value,
+                gas_limit.unique_saturated_into(),
+                max_fee_per_gas,
+                max_priority_fee_per_gas,
+                nonce,
+                access_list.unwrap_or_default(),
+                false,
+                true,
+                weight_limit,
+                proof_size_base_cost,
+                config.as_ref().unwrap_or(<Runtime as pallet_evm::Config>::config()),
+            ).map_err(|err| err.error.into())
+        }
+
+        fn current_transaction_statuses() -> Option<Vec<TransactionStatus>> {
+            pallet_ethereum::CurrentTransactionStatuses::<Runtime>::get()
+        }
+
+        fn current_block() -> Option<pallet_ethereum::Block> {
+            pallet_ethereum::CurrentBlock::<Runtime>::get()
+        }
+
+        fn current_receipts() -> Option<Vec<pallet_ethereum::Receipt>> {
+            pallet_ethereum::CurrentReceipts::<Runtime>::get()
+        }
+
+        fn current_all() -> (
+            Option<pallet_ethereum::Block>,
+            Option<Vec<pallet_ethereum::Receipt>>,
+            Option<Vec<TransactionStatus>>
+        ) {
+            (
+                pallet_ethereum::CurrentBlock::<Runtime>::get(),
+                pallet_ethereum::CurrentReceipts::<Runtime>::get(),
+                pallet_ethereum::CurrentTransactionStatuses::<Runtime>::get()
+            )
+        }
+
+        fn extrinsic_filter(
+            xts: Vec<<Block as BlockT>::Extrinsic>,
+        ) -> Vec<EthereumTransaction> {
+            xts.into_iter().filter_map(|xt| match xt.0.function {
+                RuntimeCall::Ethereum(transact { transaction }) => Some(transaction),
+                _ => None
+            }).collect::<Vec<EthereumTransaction>>()
+        }
+
+        fn elasticity() -> Option<Permill> {
+            Some(pallet_base_fee::Elasticity::<Runtime>::get())
+        }
+
+        fn gas_limit_multiplier_support() {}
+
+        fn pending_block(
+            xts: Vec<<Block as BlockT>::Extrinsic>,
+        ) -> (Option<pallet_ethereum::Block>, Option<Vec<TransactionStatus>>) {
+            for ext in xts.into_iter() {
+                let _ = Executive::apply_extrinsic(ext);
+            }
+
+            Ethereum::on_finalize(System::block_number() + 1);
+
+            (
+                pallet_ethereum::CurrentBlock::<Runtime>::get(),
+                pallet_ethereum::CurrentTransactionStatuses::<Runtime>::get()
+            )
+        }
+    }
+
+    impl fp_rpc::ConvertTransactionRuntimeApi<Block> for Runtime {
+        fn convert_transaction(transaction: EthereumTransaction) -> <Block as BlockT>::Extrinsic {
+            UncheckedExtrinsic::new_unsigned(
+                pallet_ethereum::Call::<Runtime>::transact { transaction }.into(),
+            )
+        }
+    }
+
+    #[cfg(feature = "runtime-benchmarks")]
+    impl frame_benchmarking::Benchmark<Block> for Runtime {
+        fn benchmark_metadata(extra: bool) -> (
+            Vec<frame_benchmarking::BenchmarkList>,
+            Vec<frame_support::traits::StorageInfo>,
+        ) {
+            use frame_benchmarking::{baseline, Benchmarking, BenchmarkList};
+            use frame_support::traits::StorageInfoTrait;
+
+            use baseline::Pallet as BaselineBench;
+            use frame_system_benchmarking::Pallet as SystemBench;
+            use pallet_hotfix_sufficients::Pallet as PalletHotfixSufficients;
+
+            let mut list = Vec::<BenchmarkList>::new();
+            list_benchmarks!(list, extra);
+            list_benchmark!(list, extra, pallet_hotfix_sufficients, PalletHotfixSufficients::<Runtime>);
+
+            let storage_info = AllPalletsWithSystem::storage_info();
+            (list, storage_info)
+        }
+
+        fn dispatch_benchmark(
+            config: frame_benchmarking::BenchmarkConfig
+        ) -> Result<Vec<frame_benchmarking::BenchmarkBatch>, sp_runtime::RuntimeString> {
+            use frame_benchmarking::{baseline, Benchmarking, BenchmarkBatch, add_benchmark};
+            use frame_support::traits::TrackedStorageKey;
+
+            use pallet_evm::Pallet as PalletEvmBench;
+            use pallet_hotfix_sufficients::Pallet as PalletHotfixSufficientsBench;
+
+            impl baseline::Config for Runtime {}
+            impl frame_system_benchmarking::Config for Runtime {}
+
+            let whitelist: Vec<TrackedStorageKey> = vec![];
+
+            let mut batches = Vec::<BenchmarkBatch>::new();
+            let params = (&config, &whitelist);
+
+            add_benchmark!(params, batches, pallet_evm, PalletEvmBench::<Runtime>);
+            add_benchmark!(params, batches, pallet_hotfix_sufficients, PalletHotfixSufficientsBench::<Runtime>);
+
+            if batches.is_empty() { return Err("Benchmark not found for this pallet.".into()) }
+            Ok(batches)
+        }
+    }
+
+    impl pallet_contracts::ContractsApi<Block, AccountId, Balance, BlockNumber, Hash, EventRecord> for Runtime
+        {
+            fn call(
+                origin: AccountId,
+                dest: AccountId,
+                value: Balance,
+                gas_limit: Option<Weight>,
+                storage_deposit_limit: Option<Balance>,
+                input_data: Vec<u8>,
+            ) -> pallet_contracts::ContractExecResult<Balance, EventRecord> {
+                let gas_limit = gas_limit.unwrap_or(RuntimeBlockWeights::get().max_block);
+                Contracts::bare_call(
+                    origin,
+                    dest,
+                    value,
+                    gas_limit,
+                    storage_deposit_limit,
+                    input_data,
+                    pallet_contracts::DebugInfo::UnsafeDebug,
+                    pallet_contracts::CollectEvents::UnsafeCollect,
+                    pallet_contracts::Determinism::Enforced,
+                )
+            }
+
+            fn instantiate(
+                origin: AccountId,
+                value: Balance,
+                gas_limit: Option<Weight>,
+                storage_deposit_limit: Option<Balance>,
+                code: pallet_contracts::Code<Hash>,
+                data: Vec<u8>,
+                salt: Vec<u8>,
+            ) -> pallet_contracts::ContractInstantiateResult<AccountId, Balance, EventRecord>
+            {
+                let gas_limit = gas_limit.unwrap_or(RuntimeBlockWeights::get().max_block);
+                Contracts::bare_instantiate(
+                    origin,
+                    value,
+                    gas_limit,
+                    storage_deposit_limit,
+                    code,
+                    data,
+                    salt,
+                    pallet_contracts::DebugInfo::UnsafeDebug,
+                    pallet_contracts::CollectEvents::UnsafeCollect,
+                )
+            }
+
+            fn upload_code(
+                origin: AccountId,
+                code: Vec<u8>,
+                storage_deposit_limit: Option<Balance>,
+                determinism: pallet_contracts::Determinism,
+            ) -> pallet_contracts::CodeUploadResult<Hash, Balance>
+            {
+                Contracts::bare_upload_code(
+                    origin,
+                    code,
+                    storage_deposit_limit,
+                    determinism,
+                )
+            }
+
+            fn get_storage(
+                address: AccountId,
+                key: Vec<u8>,
+            ) -> pallet_contracts::GetStorageResult {
+                Contracts::get_storage(
+                    address,
+                    key
+                )
+            }
+        }
+}
+
+/// Dynamic parameters that can be changed at runtime through the
+/// `pallet_parameters::set_parameter`.
+#[dynamic_params(RuntimeParameters, pallet_parameters::Parameters::<Runtime>)]
+pub mod dynamic_params {
+    use super::*;
+
+    #[dynamic_pallet_params]
+    #[codec(index = 0)]
+    pub mod storage {
+        /// Configures the base deposit of storing some data.
+        #[codec(index = 0)]
+        pub static BaseDeposit: Balance = 1 * DOLLARS;
+
+        /// Configures the per-byte deposit of storing some data.
+        #[codec(index = 1)]
+        pub static ByteDeposit: Balance = 1 * CENTS;
+    }
+
+    #[dynamic_pallet_params]
+    #[codec(index = 1)]
+    pub mod contracts {
+        #[codec(index = 0)]
+        pub static DepositPerItem: Balance = deposit(1, 0);
+
+        #[codec(index = 1)]
+        pub static DepositPerByte: Balance = deposit(0, 1);
+
+        #[codec(index = 2)]
+        pub static DefaultDepositLimit: Balance = deposit(1024, 1024 * 1024);
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{Runtime, WeightPerGas};
+    #[test]
+    fn configured_base_extrinsic_weight_is_evm_compatible() {
+        let min_ethereum_transaction_weight = WeightPerGas::get() * 21_000;
+        let base_extrinsic = <Runtime as frame_system::Config>::BlockWeights::get()
+            .get(frame_support::dispatch::DispatchClass::Normal)
+            .base_extrinsic;
+        assert!(base_extrinsic.ref_time() <= min_ethereum_transaction_weight.ref_time());
+    }
+}
diff --git a/runtime/src/precompiles.rs b/runtime/src/precompiles.rs
new file mode 100644
index 0000000..c563f8e
--- /dev/null
+++ b/runtime/src/precompiles.rs
@@ -0,0 +1,61 @@
+use pallet_evm::{
+	IsPrecompileResult, Precompile, PrecompileHandle, PrecompileResult, PrecompileSet,
+};
+use sp_core::H160;
+use sp_std::marker::PhantomData;
+
+use pallet_evm_precompile_modexp::Modexp;
+use pallet_evm_precompile_sha3fips::Sha3FIPS256;
+use pallet_evm_precompile_simple::{ECRecover, ECRecoverPublicKey, Identity, Ripemd160, Sha256};
+
+pub struct FrontierPrecompiles<R>(PhantomData<R>);
+
+impl<R> FrontierPrecompiles<R>
+where
+	R: pallet_evm::Config,
+{
+	pub fn new() -> Self {
+		Self(Default::default())
+	}
+	pub fn used_addresses() -> [H160; 7] {
+		[
+			hash(1),
+			hash(2),
+			hash(3),
+			hash(4),
+			hash(5),
+			hash(1024),
+			hash(1025),
+		]
+	}
+}
+impl<R> PrecompileSet for FrontierPrecompiles<R>
+where
+	R: pallet_evm::Config,
+{
+	fn execute(&self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {
+		match handle.code_address() {
+			// Ethereum precompiles :
+			a if a == hash(1) => Some(ECRecover::execute(handle)),
+			a if a == hash(2) => Some(Sha256::execute(handle)),
+			a if a == hash(3) => Some(Ripemd160::execute(handle)),
+			a if a == hash(4) => Some(Identity::execute(handle)),
+			a if a == hash(5) => Some(Modexp::execute(handle)),
+			// Non-Frontier specific nor Ethereum precompiles :
+			a if a == hash(1024) => Some(Sha3FIPS256::execute(handle)),
+			a if a == hash(1025) => Some(ECRecoverPublicKey::execute(handle)),
+			_ => None,
+		}
+	}
+
+	fn is_precompile(&self, address: H160, _gas: u64) -> IsPrecompileResult {
+		IsPrecompileResult::Answer {
+			is_precompile: Self::used_addresses().contains(&address),
+			extra_cost: 0,
+		}
+	}
+}
+
+fn hash(a: u64) -> H160 {
+	H160::from_low_u64_be(a)
+}