diff --git a/.changeset/tricky-ties-dream.md b/.changeset/tricky-ties-dream.md
new file mode 100644
index 000000000..dffd4771f
--- /dev/null
+++ b/.changeset/tricky-ties-dream.md
@@ -0,0 +1,6 @@
+---
+"@ckb-lumos/common-scripts": minor
+"@ckb-lumos/cobuild": minor
+---
+
+feat: support `SighashAll` and `SighashAllOnly` variant for cobuild
diff --git a/.prettierignore b/.prettierignore
index 040d78a37..10c619251 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -1 +1,2 @@
-**/test_cases.js
\ No newline at end of file
+**/test_cases.js
+**/generated/**/*
diff --git a/commitlint.config.js b/commitlint.config.js
index 54fecde56..433b72b41 100644
--- a/commitlint.config.js
+++ b/commitlint.config.js
@@ -23,6 +23,7 @@ const scopeEnumValues = [
   "runner",
   "e2e-test",
   "molecule",
+  "cobuild",
 ];
 const Configuration = {
   extends: ["@commitlint/config-conventional"],
diff --git a/examples/cobuild-sighash/README.md b/examples/cobuild-sighash/README.md
new file mode 100644
index 000000000..8c5fdb9da
--- /dev/null
+++ b/examples/cobuild-sighash/README.md
@@ -0,0 +1,18 @@
+# CoBuild Sighash Example
+
+This code example demonstrates how to use `@ckb-lumos/cobuild` with a lock that supports the CoBuild protocol. We will be working with a fake schema for the sUDT script to mint sUDT through a human-readable signing message.
+
+```
+union SudtActions {
+  Mint,
+}
+
+table Mint {
+  to: Script,
+  amount: Uint128,
+}
+```
+
+## Links
+
+- [CoBuild](https://talk.nervos.org/t/ckb-transaction-cobuild-protocol-overview/7702)
diff --git a/examples/cobuild-sighash/index.html b/examples/cobuild-sighash/index.html
new file mode 100644
index 000000000..1cf6194eb
--- /dev/null
+++ b/examples/cobuild-sighash/index.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Lumos with Omni Lock</title>
+</head>
+<body>
+    <div id="root"></div>
+    <script src="index.tsx" type="module"></script>
+</body>
+</html>
\ No newline at end of file
diff --git a/examples/cobuild-sighash/index.tsx b/examples/cobuild-sighash/index.tsx
new file mode 100644
index 000000000..5018af772
--- /dev/null
+++ b/examples/cobuild-sighash/index.tsx
@@ -0,0 +1,91 @@
+import React, { useEffect, useState } from "react";
+import ReactDOM from "react-dom";
+import { commons, helpers, Script } from "@ckb-lumos/lumos";
+import { asyncSleep, capacityOf, ethereum, mintSudt } from "./lib";
+
+function App() {
+  const [ethAddr, setEthAddr] = useState("");
+  const [omniAddr, setOmniAddr] = useState("");
+  const [omniLock, setOmniLock] = useState<Script>();
+  const [balance, setBalance] = useState("-");
+
+  const [mintAddr, setMintAddress] = useState("");
+  const [mintAmount, setMintAmount] = useState("");
+
+  const [isSendingTx, setIsSendingTx] = useState(false);
+  const [txHash, setTxHash] = useState("");
+
+  useEffect(() => {
+    asyncSleep(100).then(() => {
+      if (ethereum.selectedAddress) connectToMetaMask();
+      ethereum.addListener("accountsChanged", connectToMetaMask);
+    });
+  }, []);
+
+  function connectToMetaMask() {
+    ethereum
+      .enable()
+      .then(([ethAddr]: string[]) => {
+        const omniLockScript = commons.omnilock.createOmnilockScript({ auth: { flag: "ETHEREUM", content: ethAddr } });
+
+        const omniAddr = helpers.encodeToAddress(omniLockScript);
+
+        setEthAddr(ethAddr);
+        setOmniAddr(omniAddr);
+        setOmniLock(omniLockScript);
+
+        return omniAddr;
+      })
+      .then((omniAddr) => capacityOf(omniAddr))
+      .then((balance) => setBalance(balance.div(10 ** 8).toString() + " CKB"));
+  }
+
+  function onMint() {
+    if (isSendingTx) return;
+    setIsSendingTx(true);
+
+    mintSudt({ amount: mintAmount, from: omniAddr, to: mintAddr })
+      .then(setTxHash)
+      .catch((e) => {
+        console.log(e);
+        alert(e.message || JSON.stringify(e));
+      })
+      .finally(() => setIsSendingTx(false));
+  }
+
+  if (!ethereum) return <div>MetaMask is not installed</div>;
+  if (!ethAddr) return <button onClick={connectToMetaMask}>Connect to MetaMask</button>;
+
+  return (
+    <div>
+      <ul>
+        <li>Ethereum Address: {ethAddr}</li>
+        <li>Nervos Address(Omni): {omniAddr}</li>
+        <li>
+          Current Omni lock script:
+          <pre>{JSON.stringify(omniLock, null, 2)}</pre>
+        </li>
+
+        <li>Balance: {balance}</li>
+      </ul>
+
+      <div>
+        <h2>Mint token to</h2>
+        <label htmlFor="address">Address</label>&nbsp;
+        <input id="address" type="text" onChange={(e) => setMintAddress(e.target.value)} placeholder="ckt1..." />
+        <br />
+        <label htmlFor="amount">Amount</label>
+        &nbsp;
+        <input id="amount" type="text" onChange={(e) => setMintAmount(e.target.value)} placeholder="shannon" />
+        <br />
+        <button onClick={onMint} disabled={isSendingTx}>
+          Mint
+        </button>
+        <p>Tx Hash: {txHash}</p>
+      </div>
+    </div>
+  );
+}
+
+const app = document.getElementById("root");
+ReactDOM.render(<App />, app);
diff --git a/examples/cobuild-sighash/lib.ts b/examples/cobuild-sighash/lib.ts
new file mode 100644
index 000000000..c77fb159e
--- /dev/null
+++ b/examples/cobuild-sighash/lib.ts
@@ -0,0 +1,164 @@
+import { BI, helpers, Indexer, RPC, config, Cell, CellDep, Script } from "@ckb-lumos/lumos";
+import { Config } from "@ckb-lumos/lumos/config";
+import { addCellDep, minimalCellCapacityCompatible, TransactionSkeleton } from "@ckb-lumos/lumos/helpers";
+import { computeScriptHash } from "@ckb-lumos/lumos/utils";
+import { AnyCodec, blockchain, bytes, table, Uint128, union, UnpackResult } from "@ckb-lumos/lumos/codec";
+import { injectCapacity, payFee } from "@ckb-lumos/lumos/common-scripts/common";
+import { prepareCobuildSighashSigningEntries, sealTransaction } from "@ckb-lumos/cobuild";
+import { cobuild } from "@ckb-lumos/lumos/common-scripts/omnilock";
+
+export const CONFIG: Config = {
+  PREFIX: config.TESTNET.PREFIX,
+  SCRIPTS: {
+    ...config.TESTNET.SCRIPTS,
+    // TODO remove it when the testnet omnilock is updated
+    OMNILOCK: {
+      TX_HASH: "0x042485f2b1386f3156a1585de6fe38e3c866ffb5acbcea6cab61a37b9780e7b1",
+      HASH_TYPE: "type",
+      CODE_HASH: "0xc039461134d79c87929eca28cb89261ec3f66cc2b5f562063da863330870598b",
+      DEP_TYPE: "code",
+      INDEX: "0x0",
+    },
+  },
+};
+
+config.initializeConfig(CONFIG);
+
+/**
+ * a helper function to enhance readability for the unpacked result of codecs
+ * @param original
+ * @param enhance
+ */
+function readable<T extends AnyCodec>(original: T, enhance: (value: UnpackResult<T>) => any): AnyCodec {
+  return {
+    ...original,
+    unpack: (value) => enhance(original.unpack(value)),
+  };
+}
+
+const ReadableScript = readable(blockchain.Script, (script: Script) => helpers.encodeToAddress(script));
+const ReadableU128 = readable(Uint128, (value) => value.toString());
+
+// fake udt mint action
+const MintUdt = table({ amount: ReadableU128, to: ReadableScript }, ["amount", "to"]);
+// a fake schema, just for demonstration
+// please do NOT use it in the real world sUDT
+const FakeScheme = union({ MintUdt }, ["MintUdt"]);
+
+const CKB_RPC_URL = "https://testnet.ckb.dev/rpc";
+const rpc = new RPC(CKB_RPC_URL);
+const indexer = new Indexer(CKB_RPC_URL);
+// prettier-ignore
+interface EthereumRpc {
+  (payload: { method: 'personal_sign'; params: [string /*from*/, string /*message*/] }): Promise<string>;
+}
+
+// prettier-ignore
+export interface EthereumProvider {
+  selectedAddress: string;
+  isMetaMask?: boolean;
+  enable: () => Promise<string[]>;
+  addListener: (event: 'accountsChanged', listener: (addresses: string[]) => void) => void;
+  removeEventListener: (event: 'accountsChanged', listener: (addresses: string[]) => void) => void;
+  request: EthereumRpc;
+}
+// @ts-ignore
+export const ethereum = window.ethereum as EthereumProvider;
+
+export function asyncSleep(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+interface Options {
+  from: string;
+  to: string;
+  amount: string;
+}
+
+export async function mintSudt(options: Options): Promise<string> {
+  let txSkeleton = TransactionSkeleton({
+    cellProvider: { collector: (query) => indexer.collector({ type: "empty", ...query }) },
+  });
+
+  const udtType: Script = {
+    codeHash: CONFIG.SCRIPTS.SUDT.CODE_HASH,
+    hashType: CONFIG.SCRIPTS.SUDT.HASH_TYPE,
+    args: computeScriptHash(helpers.parseAddress(options.from)),
+  };
+  const toLock = helpers.parseAddress(options.to);
+
+  const message = {
+    actions: [
+      {
+        data: FakeScheme.pack({ type: "MintUdt", value: { amount: Number(options.amount), to: toLock } }),
+        scriptHash: computeScriptHash(udtType),
+        scriptInfoHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
+      },
+    ],
+  };
+
+  const approved = window.confirm(
+    `You are going to send the message to blockchain \n ${JSON.stringify(
+      FakeScheme.unpack(message.actions[0].data),
+      null,
+      2
+    )}`
+  );
+
+  if (!approved) {
+    throw new Error("User has rejected");
+  }
+
+  const udtCell: Cell = {
+    cellOutput: { capacity: "0x0", lock: toLock, type: udtType },
+    data: bytes.hexify(Uint128.pack(Number(options.amount))),
+  };
+  const sudtOccupied = minimalCellCapacityCompatible(udtCell);
+  udtCell.cellOutput.capacity = sudtOccupied.toHexString();
+
+  txSkeleton = txSkeleton.update("outputs", (outputs) => outputs.push(udtCell));
+
+  const sudtCellDep: CellDep = {
+    outPoint: { txHash: CONFIG.SCRIPTS.SUDT.TX_HASH, index: CONFIG.SCRIPTS.SUDT.INDEX },
+    depType: CONFIG.SCRIPTS.SUDT.DEP_TYPE,
+  };
+  txSkeleton = addCellDep(txSkeleton, sudtCellDep);
+
+  txSkeleton = await injectCapacity(txSkeleton, [options.from], sudtOccupied);
+  // TODO a better way for fee calculation
+  txSkeleton = await payFee(txSkeleton, [options.from], 2000);
+
+  txSkeleton = prepareCobuildSighashSigningEntries(
+    txSkeleton,
+    // only one omnilock in the transaction
+    // so we can use a simple filter
+    () => true,
+    message
+  );
+
+  let signature = await ethereum.request({
+    method: "personal_sign",
+    params: [ethereum.selectedAddress, txSkeleton.signingEntries.get(0).message],
+  });
+  let v = Number.parseInt(signature.slice(-2), 16);
+  if (v >= 27) v -= 27;
+  signature = "0x" + signature.slice(2, -2) + v.toString(16).padStart(2, "0");
+
+  const signedTx = sealTransaction(txSkeleton, [cobuild.sealCobuildBlake2bFlow({ signature })], message);
+  const txHash = await rpc.sendTransaction(signedTx);
+
+  return txHash;
+}
+
+export async function capacityOf(address: string): Promise<BI> {
+  const collector = indexer.collector({
+    lock: helpers.parseAddress(address),
+  });
+
+  let balance = BI.from(0);
+  for await (const cell of collector.collect()) {
+    balance = balance.add(cell.cellOutput.capacity);
+  }
+
+  return balance;
+}
diff --git a/examples/cobuild-sighash/package.json b/examples/cobuild-sighash/package.json
new file mode 100644
index 000000000..2b3211079
--- /dev/null
+++ b/examples/cobuild-sighash/package.json
@@ -0,0 +1,24 @@
+{
+  "private": true,
+  "name": "@lumos-examples/cobuild-sighash",
+  "description": "",
+  "scripts": {
+    "start": "parcel index.html",
+    "lint": "tsc --noEmit"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "@ckb-lumos/lumos": "canary",
+    "@ckb-lumos/cobuild": "canary",
+    "@types/react": "^18.0.25",
+    "@types/react-dom": "^18.0.9",
+    "react": "18.2.0",
+    "react-dom": "18.2.0"
+  },
+  "devDependencies": {
+    "@ckb-lumos/molecule": "canary",
+    "parcel": "^2.9.3"
+  }
+}
diff --git a/examples/cobuild-sighash/tsconfig.json b/examples/cobuild-sighash/tsconfig.json
new file mode 100644
index 000000000..254a5c1f7
--- /dev/null
+++ b/examples/cobuild-sighash/tsconfig.json
@@ -0,0 +1,9 @@
+{
+  "compilerOptions": {
+    "lib": ["dom"],
+    "jsx": "react",
+    "module": "CommonJS",
+    "skipLibCheck": true,
+    "esModuleInterop": true
+  }
+}
diff --git a/examples/pnpm-lock.yaml b/examples/pnpm-lock.yaml
index fbafbc039..a01e96b84 100644
--- a/examples/pnpm-lock.yaml
+++ b/examples/pnpm-lock.yaml
@@ -39,13 +39,13 @@ importers:
   ../packages/base:
     dependencies:
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/toolkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../toolkit
       '@types/blake2b':
         specifier: ^2.1.0
@@ -76,19 +76,19 @@ importers:
   ../packages/ckb-indexer:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       '@ckb-lumos/toolkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../toolkit
       cross-fetch:
         specifier: ^3.1.5
@@ -98,7 +98,7 @@ importers:
         version: 3.3.0
     devDependencies:
       '@ckb-lumos/testkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../testkit
       '@types/lodash.uniqby':
         specifier: ^4.7.7
@@ -122,10 +122,41 @@ importers:
         specifier: ^15.0.4
         version: 15.0.4
 
+  ../packages/cobuild:
+    dependencies:
+      '@ckb-lumos/base':
+        specifier: 0.22.0-next.5
+        version: link:../base
+      '@ckb-lumos/codec':
+        specifier: 0.22.0-next.5
+        version: link:../codec
+      '@types/blake2b':
+        specifier: ^2.1.3
+        version: 2.1.3
+      blake2b:
+        specifier: ^2.1.3
+        version: 2.1.3
+    devDependencies:
+      '@ckb-lumos/common-scripts':
+        specifier: 0.22.0-next.5
+        version: link:../common-scripts
+      '@ckb-lumos/debugger':
+        specifier: 0.22.0-next.5
+        version: link:../debugger
+      '@ckb-lumos/hd':
+        specifier: 0.22.0-next.5
+        version: link:../hd
+      '@ckb-lumos/helpers':
+        specifier: 0.22.0-next.5
+        version: link:../helpers
+      '@ckb-lumos/molecule':
+        specifier: 0.22.0-next.5
+        version: link:../molecule
+
   ../packages/codec:
     dependencies:
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
     devDependencies:
       escape-string-regexp:
@@ -138,25 +169,25 @@ importers:
   ../packages/common-scripts:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/config-manager':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../config-manager
       '@ckb-lumos/helpers':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../helpers
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       '@ckb-lumos/toolkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../toolkit
       bech32:
         specifier: ^2.0.0
@@ -169,10 +200,10 @@ importers:
         version: 4.3.0
     devDependencies:
       '@ckb-lumos/debugger':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../debugger
       '@ckb-lumos/hd':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../hd
       '@types/keccak':
         specifier: ^3.0.1
@@ -187,16 +218,16 @@ importers:
   ../packages/config-manager:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       '@types/deep-freeze-strict':
         specifier: ^1.1.0
@@ -208,22 +239,22 @@ importers:
   ../packages/debugger:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/config-manager':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../config-manager
       '@ckb-lumos/helpers':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../helpers
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       '@types/download':
         specifier: ^8.0.1
@@ -245,55 +276,55 @@ importers:
         version: 3.0.0
     devDependencies:
       '@ckb-lumos/common-scripts':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../common-scripts
       '@ckb-lumos/experiment-tx-assembler':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../experiment-tx-assembler
       '@ckb-lumos/hd':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../hd
 
   ../packages/e2e-test:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/ckb-indexer':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../ckb-indexer
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/common-scripts':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../common-scripts
       '@ckb-lumos/config-manager':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../config-manager
       '@ckb-lumos/hd':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../hd
       '@ckb-lumos/helpers':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../helpers
       '@ckb-lumos/light-client':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../light-client
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       '@ckb-lumos/runner':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../runner
       '@ckb-lumos/toolkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../toolkit
       '@ckb-lumos/utils':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../utils
       '@types/kill-port':
         specifier: ^2.0.0
@@ -306,7 +337,7 @@ importers:
         version: 2.0.1
     devDependencies:
       '@ckb-lumos/testkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../testkit
       '@types/request':
         specifier: ^2.48.8
@@ -327,28 +358,28 @@ importers:
   ../packages/experiment-tx-assembler:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/config-manager':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../config-manager
       '@ckb-lumos/helpers':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../helpers
       '@ckb-lumos/toolkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../toolkit
 
   ../packages/hd:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       bn.js:
         specifier: ^5.1.3
@@ -379,22 +410,22 @@ importers:
   ../packages/hd-cache:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/ckb-indexer':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../ckb-indexer
       '@ckb-lumos/config-manager':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../config-manager
       '@ckb-lumos/hd':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../hd
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       immutable:
         specifier: ^4.3.0
@@ -410,19 +441,19 @@ importers:
   ../packages/helpers:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/config-manager':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../config-manager
       '@ckb-lumos/toolkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../toolkit
       bech32:
         specifier: ^2.0.0
@@ -434,13 +465,13 @@ importers:
   ../packages/light-client:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/ckb-indexer':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../ckb-indexer
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       cross-fetch:
         specifier: ^3.1.5
@@ -450,7 +481,7 @@ importers:
         version: 3.3.0
     devDependencies:
       '@ckb-lumos/testkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../testkit
       '@types/request':
         specifier: ^2.48.8
@@ -468,49 +499,49 @@ importers:
   ../packages/lumos:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/ckb-indexer':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../ckb-indexer
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/common-scripts':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../common-scripts
       '@ckb-lumos/config-manager':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../config-manager
       '@ckb-lumos/hd':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../hd
       '@ckb-lumos/helpers':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../helpers
       '@ckb-lumos/light-client':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../light-client
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       '@ckb-lumos/toolkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../toolkit
       '@ckb-lumos/transaction-manager':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../transaction-manager
 
   ../packages/molecule:
     dependencies:
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@types/moo':
         specifier: ^0.5.9
@@ -535,7 +566,7 @@ importers:
         version: 3.0.2
     devDependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       jsbi:
         specifier: ^4.1.0
@@ -544,10 +575,10 @@ importers:
   ../packages/rpc:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       abort-controller:
         specifier: ^3.0.0
@@ -575,7 +606,7 @@ importers:
   ../packages/runner:
     dependencies:
       '@ckb-lumos/utils':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../utils
       '@ltd/j-toml':
         specifier: ^1.38.0
@@ -611,16 +642,16 @@ importers:
   ../packages/testkit:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       '@types/body-parser':
         specifier: ^1.19.1
@@ -657,7 +688,7 @@ importers:
   ../packages/toolkit:
     dependencies:
       '@ckb-lumos/bi':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../bi
     devDependencies:
       '@babel/plugin-proposal-export-namespace-from':
@@ -670,19 +701,19 @@ importers:
   ../packages/transaction-manager:
     dependencies:
       '@ckb-lumos/base':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../base
       '@ckb-lumos/ckb-indexer':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../ckb-indexer
       '@ckb-lumos/codec':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../codec
       '@ckb-lumos/rpc':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../rpc
       '@ckb-lumos/toolkit':
-        specifier: 0.22.0-next.4
+        specifier: 0.22.0-next.5
         version: link:../toolkit
       immutable:
         specifier: ^4.3.0
@@ -725,6 +756,31 @@ importers:
         specifier: ^2.9.3
         version: 2.9.3
 
+  cobuild-sighash:
+    dependencies:
+      '@ckb-lumos/cobuild':
+        specifier: canary
+        version: link:../../packages/cobuild
+      '@ckb-lumos/lumos':
+        specifier: canary
+        version: link:../../packages/lumos
+      '@types/react':
+        specifier: ^18.0.25
+        version: 18.0.25
+      '@types/react-dom':
+        specifier: ^18.0.9
+        version: 18.0.9
+      react:
+        specifier: 18.2.0
+        version: 18.2.0
+      react-dom:
+        specifier: 18.2.0
+        version: 18.2.0(react@18.2.0)
+    devDependencies:
+      parcel:
+        specifier: ^2.9.3
+        version: 2.9.3
+
   exchange-sudt-for-ckb:
     dependencies:
       '@ckb-lumos/lumos':
@@ -3282,6 +3338,10 @@ packages:
     resolution: {integrity: sha512-Mv8N0qtdb72iW1XJR/4Yp01frtibnv8BpFUZDROnzd7hVEX4cEN/xHgU2ZfsnOnTDt+fHJVc0uRIWcNz6uIB2A==}
     dev: false
 
+  /@types/blake2b@2.1.3:
+    resolution: {integrity: sha512-MFCdX0MNxFBP/xEILO5Td0kv6nI7+Q2iRWZbTL/yzH2/eDVZS5Wd1LHdsmXClvsCyzqaZfHFzZaN6BUeUCfSDA==}
+    dev: false
+
   /@types/bn.js@4.11.6:
     resolution: {integrity: sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==}
     dependencies:
diff --git a/packages/cobuild/README.md b/packages/cobuild/README.md
new file mode 100644
index 000000000..92ac23589
--- /dev/null
+++ b/packages/cobuild/README.md
@@ -0,0 +1,30 @@
+# @ckb-lumos/cobuild
+
+A set of tools to work with the CoBuild protocol.
+
+## Quick Start
+
+To work with CoBuild, ensure that locks support the CoBuild protocol, such as Omnilock.
+
+### SighashAll & SighashAllOnly
+
+`SighashAll` & `SighashAllOnly` are both for human-readable signing content to avoid blind signing. The difference is that `SighashAll` includes a `message` of `actions` and `SighashAllOnly` does not
+
+To assemble a `SighashAll` or `SighashAllOnly` transaction is just like assembling a normal transaction, but in a different signing way.
+
+```diff
++ import { prepareCobuildSighashSigningEntries } from '@ckb-lumos/cobuild'
+- import { sealTransaction } from '@ckb-lumos/helpers'
++ // the sealTransaction is compatible with the original one in @ckb-lumos/helpers
++ import { sealTransaction } from '@ckb-lumos/cobuid'
+
+txSkeleton = common.prepareSigningEntries(txSkeleton, config);
++ const lockThatSupportsCoBuild = (script: Script) => script.codeHash === CODE_HASH_THAT_SUPPORTS_COBUILD;
++ txSkeleton = prepareCobuildSighashSigningEntries(
++    txSkeleton,
++    lockThatSupportsCoBuild,
++    {actions: [cobuildAction1, cobuildAction2]}
++  )
+
+sealTransaction(txSkeleton, signatures)
+```
diff --git a/packages/cobuild/lumos-molecule-codegen.json b/packages/cobuild/lumos-molecule-codegen.json
new file mode 100644
index 000000000..3c5082edb
--- /dev/null
+++ b/packages/cobuild/lumos-molecule-codegen.json
@@ -0,0 +1,6 @@
+{
+  "objectKeyFormat": "camelcase",
+  "prepend": "import { Uint32, Bytes, Byte32, String, BytesVec, Transaction, CellOutputVec } from './src/shared-codecs'",
+  "schemaDir": "schemas",
+  "outDir": "./src/generated"
+}
diff --git a/packages/cobuild/package.json b/packages/cobuild/package.json
new file mode 100644
index 000000000..64a1a0b4e
--- /dev/null
+++ b/packages/cobuild/package.json
@@ -0,0 +1,62 @@
+{
+  "name": "@ckb-lumos/cobuild",
+  "version": "0.22.0-next.5",
+  "description": "CoBuild implementation for Lumos",
+  "author": "Homura <homura.dev@gmail.com>",
+  "homepage": "https://github.com/ckb-js/lumos#readme",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "types": "lib/index.d.ts",
+  "engines": {
+    "node": ">=12.0.0"
+  },
+  "directories": {
+    "lib": "lib",
+    "test": "tests"
+  },
+  "files": [
+    "lib",
+    "src"
+  ],
+  "dependencies": {
+    "@ckb-lumos/base": "0.22.0-next.5",
+    "@ckb-lumos/codec": "0.22.0-next.5",
+    "@types/blake2b": "^2.1.3",
+    "blake2b": "^2.1.3"
+  },
+  "devDependencies": {
+    "@ckb-lumos/molecule": "0.22.0-next.5",
+    "@ckb-lumos/debugger": "0.22.0-next.5",
+    "@ckb-lumos/helpers": "0.22.0-next.5",
+    "@ckb-lumos/common-scripts": "0.22.0-next.5",
+    "@ckb-lumos/hd": "0.22.0-next.5"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/ckb-js/lumos.git"
+  },
+  "scripts": {
+    "fmt": "prettier --write \"{src,tests,examples}/**/*.ts\" package.json",
+    "lint": "eslint -c ../../.eslintrc.js \"{src,tests,examples}/**/*.ts\"",
+    "test": "ava **/*.test.ts --timeout=2m",
+    "build": "pnpm run build:types && pnpm run build:js",
+    "build:types": "tsc --declaration --emitDeclarationOnly",
+    "build:js": "babel --root-mode upward src --out-dir lib --extensions .ts -s",
+    "clean": "rm -rf lib",
+    "codegen:molecule": "lumos-molecule-codegen"
+  },
+  "bugs": {
+    "url": "https://github.com/ckb-js/lumos/issues"
+  },
+  "ava": {
+    "extensions": [
+      "ts"
+    ],
+    "require": [
+      "ts-node/register"
+    ]
+  },
+  "publishConfig": {
+    "access": "public"
+  }
+}
diff --git a/packages/cobuild/schemas/basic.mol b/packages/cobuild/schemas/basic.mol
new file mode 100644
index 000000000..240c33a0c
--- /dev/null
+++ b/packages/cobuild/schemas/basic.mol
@@ -0,0 +1,74 @@
+array Hash [byte; 32];
+vector String <byte>; // UTF-8 encoded
+option Uint32Opt (Uint32);
+
+table Action {
+    script_info_hash: Byte32,   // script info
+    script_hash: Byte32,        // script
+    data: Bytes,              // action data
+}
+
+vector ActionVec <Action>;
+
+table Message {
+    actions: ActionVec,
+}
+
+table ScriptInfo {
+    name: String,
+    url: String,
+    script_hash: Byte32,
+    schema: String,
+    message_type: String,
+}
+
+vector ScriptInfoVec <ScriptInfo>;
+
+table ResolvedInputs {
+    outputs: CellOutputVec,
+    outputs_data: BytesVec,
+}
+
+table BuildingPacketV1 {
+    message: Message,
+    payload: Transaction,
+    resolved_inputs: ResolvedInputs,
+    change_output: Uint32Opt,
+    script_infos: ScriptInfoVec,
+    lock_actions: ActionVec,
+}
+
+union BuildingPacket {
+    BuildingPacketV1,
+}
+
+table SighashAll {
+    message: Message,
+    seal: Bytes,
+}
+
+table SighashAllOnly {
+    seal: Bytes,
+}
+
+table SealPair {
+    script_hash: Byte32,
+    seal: Bytes,
+}
+vector SealPairVec <SealPair>;
+
+table OtxStart {
+    start_input_cell: Uint32,
+    start_output_cell: Uint32,
+    start_cell_deps: Uint32,
+    start_header_deps: Uint32,
+}
+
+table Otx {
+    input_cells: Uint32,
+    output_cells: Uint32,
+    cell_deps: Uint32,
+    header_deps: Uint32,
+    message: Message,
+    seals: SealPairVec,
+}
diff --git a/packages/cobuild/schemas/top_level.mol b/packages/cobuild/schemas/top_level.mol
new file mode 100644
index 000000000..7ab2ad397
--- /dev/null
+++ b/packages/cobuild/schemas/top_level.mol
@@ -0,0 +1,8 @@
+import basic;
+
+union WitnessLayout {
+    SighashAll: 4278190081,
+    SighashAllOnly: 4278190082,
+    Otx: 4278190083,
+    OtxStart: 4278190084,
+}
diff --git a/packages/cobuild/src/codec.ts b/packages/cobuild/src/codec.ts
new file mode 100644
index 000000000..3e6ac6aa3
--- /dev/null
+++ b/packages/cobuild/src/codec.ts
@@ -0,0 +1,17 @@
+export {
+  Action,
+  ActionVec,
+  BuildingPacketV1,
+  BuildingPacket,
+  Message,
+  Otx,
+  OtxStart,
+  ResolvedInputs,
+  ScriptInfo,
+  ScriptInfoVec,
+  SealPair,
+  SealPairVec,
+  SighashAll,
+  SighashAllOnly,
+} from "./generated/basic";
+export { WitnessLayout } from "./generated/top_level";
diff --git a/packages/cobuild/src/createBuildingPacketV1.ts b/packages/cobuild/src/createBuildingPacketV1.ts
new file mode 100644
index 000000000..8523db5ba
--- /dev/null
+++ b/packages/cobuild/src/createBuildingPacketV1.ts
@@ -0,0 +1,47 @@
+import {
+  createTransactionFromSkeleton,
+  TransactionSkeletonType,
+} from "@ckb-lumos/helpers";
+import { BuildingPacketV1 } from "./codec";
+import { UnpackResult } from "@ckb-lumos/codec";
+
+type BuildingPacketV1Type = UnpackResult<typeof BuildingPacketV1>;
+type OptionalKeys<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>;
+
+/**
+ * create a BuildingPacketV1 from a TransactionSkeleton
+ * @param txSkeleton
+ * @param options
+ */
+export function createBuildingPacketV1(
+  txSkeleton: TransactionSkeletonType,
+  options: OptionalKeys<
+    BuildingPacketV1Type,
+    "resolvedInputs" | "payload" | "lockActions"
+  >
+): BuildingPacketV1Type {
+  const resolvedInputs: BuildingPacketV1Type["resolvedInputs"] = (() => {
+    if (options.resolvedInputs) {
+      return options.resolvedInputs;
+    }
+
+    const result: BuildingPacketV1Type["resolvedInputs"] = {
+      outputs: [],
+      outputsData: [],
+    };
+    txSkeleton.get("inputs").forEach((cell) => {
+      resolvedInputs.outputs.push(cell.cellOutput);
+      resolvedInputs.outputsData.push(cell.data);
+    });
+    return result;
+  })();
+
+  return {
+    message: options.message,
+    scriptInfos: options.scriptInfos,
+    lockActions: options.lockActions || [],
+    resolvedInputs: resolvedInputs,
+    payload: options.payload || createTransactionFromSkeleton(txSkeleton),
+    changeOutput: options.changeOutput,
+  };
+}
diff --git a/packages/cobuild/src/generated/basic.ts b/packages/cobuild/src/generated/basic.ts
new file mode 100644
index 000000000..edb9220b6
--- /dev/null
+++ b/packages/cobuild/src/generated/basic.ts
@@ -0,0 +1,97 @@
+// This file is generated by @ckb-lumos/molecule, please do not modify it manually.
+/* eslint-disable */
+import { bytes, createBytesCodec, createFixedBytesCodec, molecule } from "@ckb-lumos/codec";
+import  { Uint32, Bytes, Byte32, String, BytesVec, Transaction, CellOutputVec }  from '../shared-codecs'
+
+const { array, vector, union, option, struct, table } = molecule;
+
+const fallbackBytesCodec = createBytesCodec({
+  pack: bytes.bytify,
+  unpack: bytes.hexify,
+});
+
+function createFallbackFixedBytesCodec(byteLength: number) {
+  return createFixedBytesCodec({
+    pack: bytes.bytify,
+    unpack: bytes.hexify,
+    byteLength,
+  });
+}
+
+const byte = createFallbackFixedBytesCodec(1);
+
+export const Hash = createFallbackFixedBytesCodec(32);
+
+export const Uint32Opt = option(Uint32);
+
+export const Action = table({
+  scriptInfoHash: Byte32,
+  scriptHash: Byte32,
+  data: Bytes
+}, ['scriptInfoHash', 'scriptHash', 'data']);
+
+export const ActionVec = vector(Action);
+
+export const Message = table({
+  actions: ActionVec
+}, ['actions']);
+
+export const ScriptInfo = table({
+  name: String,
+  url: String,
+  scriptHash: Byte32,
+  schema: String,
+  messageType: String
+}, ['name', 'url', 'scriptHash', 'schema', 'messageType']);
+
+export const ScriptInfoVec = vector(ScriptInfo);
+
+export const ResolvedInputs = table({
+  outputs: CellOutputVec,
+  outputsData: BytesVec
+}, ['outputs', 'outputsData']);
+
+export const BuildingPacketV1 = table({
+  message: Message,
+  payload: Transaction,
+  resolvedInputs: ResolvedInputs,
+  changeOutput: Uint32Opt,
+  scriptInfos: ScriptInfoVec,
+  lockActions: ActionVec
+}, ['message', 'payload', 'resolvedInputs', 'changeOutput', 'scriptInfos', 'lockActions']);
+
+export const BuildingPacket = union({
+  BuildingPacketV1
+}, ['BuildingPacketV1']);
+
+export const SighashAll = table({
+  message: Message,
+  seal: Bytes
+}, ['message', 'seal']);
+
+export const SighashAllOnly = table({
+  seal: Bytes
+}, ['seal']);
+
+export const SealPair = table({
+  scriptHash: Byte32,
+  seal: Bytes
+}, ['scriptHash', 'seal']);
+
+export const SealPairVec = vector(SealPair);
+
+export const OtxStart = table({
+  startInputCell: Uint32,
+  startOutputCell: Uint32,
+  startCellDeps: Uint32,
+  startHeaderDeps: Uint32
+}, ['startInputCell', 'startOutputCell', 'startCellDeps', 'startHeaderDeps']);
+
+export const Otx = table({
+  inputCells: Uint32,
+  outputCells: Uint32,
+  cellDeps: Uint32,
+  headerDeps: Uint32,
+  message: Message,
+  seals: SealPairVec
+}, ['inputCells', 'outputCells', 'cellDeps', 'headerDeps', 'message', 'seals']);
diff --git a/packages/cobuild/src/generated/top_level.ts b/packages/cobuild/src/generated/top_level.ts
new file mode 100644
index 000000000..5d468848d
--- /dev/null
+++ b/packages/cobuild/src/generated/top_level.ts
@@ -0,0 +1,29 @@
+// This file is generated by @ckb-lumos/molecule, please do not modify it manually.
+/* eslint-disable */
+import { bytes, createBytesCodec, createFixedBytesCodec, molecule } from "@ckb-lumos/codec";
+import  { Uint32, Bytes, Byte32, String, BytesVec, Transaction, CellOutputVec }  from '../shared-codecs'
+import { Hash, Uint32Opt, Action, ActionVec, Message, ScriptInfo, ScriptInfoVec, ResolvedInputs, BuildingPacketV1, BuildingPacket, SighashAll, SighashAllOnly, SealPair, SealPairVec, OtxStart, Otx } from './basic'
+
+const { array, vector, union, option, struct, table } = molecule;
+
+const fallbackBytesCodec = createBytesCodec({
+  pack: bytes.bytify,
+  unpack: bytes.hexify,
+});
+
+function createFallbackFixedBytesCodec(byteLength: number) {
+  return createFixedBytesCodec({
+    pack: bytes.bytify,
+    unpack: bytes.hexify,
+    byteLength,
+  });
+}
+
+const byte = createFallbackFixedBytesCodec(1);
+
+export const WitnessLayout = union({
+  SighashAll,
+  SighashAllOnly,
+  Otx,
+  OtxStart
+}, {'SighashAll': 4278190081, 'SighashAllOnly': 4278190082, 'Otx': 4278190083, 'OtxStart': 4278190084});
diff --git a/packages/cobuild/src/hash.ts b/packages/cobuild/src/hash.ts
new file mode 100644
index 000000000..fe7893d43
--- /dev/null
+++ b/packages/cobuild/src/hash.ts
@@ -0,0 +1,39 @@
+// https://github.com/XuJiandong/omnilock/blob/fd6674d8d4a257cd378d0cc2fef60d362d85878a/tests/omni_lock_rust/src/blake2b.rs
+import { bytes, BytesLike } from "@ckb-lumos/codec";
+import blake2b from "blake2b";
+
+const PERSONALIZATION_SIGHASH_ALL = "ckb-tcob-sighash";
+
+const PERSONALIZATION_SIGHASH_ALL_ONLY = "ckb-tcob-sgohash";
+
+// const PERSONALIZATION_OTX = "ckb-tcob-otxhash";
+
+/**
+ * create a Blake2b hash for the `SighashAll` CoBuild variant
+ * @param value
+ */
+export function blake2bSighashAll(value: BytesLike): Uint8Array {
+  return blake2b(
+    32,
+    undefined,
+    undefined,
+    new TextEncoder().encode(PERSONALIZATION_SIGHASH_ALL)
+  )
+    .update(bytes.bytify(value))
+    .digest();
+}
+
+/**
+ * create a Blake2b hash for the `SighashAllOnly` CoBuild variant
+ * @param value
+ */
+export function blake2bSighashAllOnly(value: BytesLike): Uint8Array {
+  return blake2b(
+    32,
+    undefined,
+    undefined,
+    new TextEncoder().encode(PERSONALIZATION_SIGHASH_ALL_ONLY)
+  )
+    .update(bytes.bytify(value))
+    .digest();
+}
diff --git a/packages/cobuild/src/index.ts b/packages/cobuild/src/index.ts
new file mode 100644
index 000000000..bc624f2f5
--- /dev/null
+++ b/packages/cobuild/src/index.ts
@@ -0,0 +1,4 @@
+export {
+  prepareCobuildSighashSigningEntries,
+  sealTransaction,
+} from "./sighash";
diff --git a/packages/cobuild/src/shared-codecs.ts b/packages/cobuild/src/shared-codecs.ts
new file mode 100644
index 000000000..5f6a5ba8d
--- /dev/null
+++ b/packages/cobuild/src/shared-codecs.ts
@@ -0,0 +1,17 @@
+import { blockchain } from "@ckb-lumos/base";
+import { bytes, number } from "@ckb-lumos/codec";
+import { byteVecOf } from "@ckb-lumos/codec/lib/molecule";
+
+export const Bytes = blockchain.Bytes;
+export const Byte32 = blockchain.Byte32;
+export const Uint32 = number.Uint32;
+export const BytesVec = blockchain.BytesVec;
+export const Transaction = blockchain.Transaction;
+export const CellOutputVec = blockchain.CellOutputVec;
+
+const textEncoder = new TextEncoder();
+const textDecoder = new TextDecoder();
+export const String = byteVecOf<string>({
+  pack: (value) => textEncoder.encode(value),
+  unpack: (value) => textDecoder.decode(bytes.bytify(value)),
+});
diff --git a/packages/cobuild/src/sighash.ts b/packages/cobuild/src/sighash.ts
new file mode 100644
index 000000000..ba09dc21e
--- /dev/null
+++ b/packages/cobuild/src/sighash.ts
@@ -0,0 +1,169 @@
+import {
+  createTransactionFromSkeleton,
+  TransactionSkeletonType,
+} from "@ckb-lumos/helpers";
+import { Message, WitnessLayout } from "./codec";
+import { bytes, BytesLike, PackParam } from "@ckb-lumos/codec";
+import {
+  blockchain,
+  Hash,
+  Script,
+  Transaction,
+  WitnessArgs,
+} from "@ckb-lumos/base";
+import { ckbHash, computeScriptHash } from "@ckb-lumos/base/lib/utils";
+import { blake2bSighashAll, blake2bSighashAllOnly } from "./hash";
+import { Uint32LE } from "@ckb-lumos/codec/lib/number";
+
+/**
+ * prepare the signing entries for cobuild locks
+ *
+ * @example
+ *
+ * prepareCobuildSighashSigningEntries(
+ *   txSkeleton,
+ *   (script) => script.codeHash === CODE_HASH_THAT_IS_COMPATIBLE_WITH_COBUILD,
+ *   { actions: [cobuildAction0, cobuildAction1] }
+ * )
+ *
+ * @param txSkeleton
+ * @param sighashAllLockFilter a filter for locks that require sign with cobuild mode
+ * @param message
+ */
+export function prepareCobuildSighashSigningEntries(
+  txSkeleton: TransactionSkeletonType,
+  sighashAllLockFilter: (script: Script) => boolean,
+  message?: PackParam<typeof Message>
+): TransactionSkeletonType {
+  const tx = createTransactionFromSkeleton(txSkeleton);
+  const txHash = ckbHash(blockchain.RawTransaction.pack(tx));
+
+  const resolvedInputs = txSkeleton.inputs.map((input) =>
+    bytes.concat(
+      blockchain.CellOutput.pack(input.cellOutput),
+      Uint32LE.pack(bytes.bytify(input.data).length),
+      input.data
+    )
+  );
+  const extraWitnesses = txSkeleton
+    .get("witnesses")
+    .slice(txSkeleton.inputs.size);
+
+  const signingMessage = bytes.concat(
+    message ? Message.pack(message) : [],
+    txHash,
+    ...resolvedInputs,
+    ...extraWitnesses
+  );
+  const hashFn = message ? blake2bSighashAll : blake2bSighashAllOnly;
+  const digest = bytes.hexify(hashFn(signingMessage));
+
+  type SigningEntry = { type: string; index: number; message: string };
+  const signingGroup: Map<Hash, SigningEntry> = new Map();
+
+  txSkeleton.inputs.forEach((cell, index) => {
+    const lockHash = computeScriptHash(cell.cellOutput.lock);
+
+    if (
+      signingGroup.has(lockHash) ||
+      !sighashAllLockFilter(cell.cellOutput.lock)
+    ) {
+      return;
+    }
+
+    // remove already existed signingEntries to avoid unnecessary signing entries
+    txSkeleton = txSkeleton.update("signingEntries", (signingEntries) =>
+      signingEntries.filter(({ index: existsIndex }) => existsIndex !== index)
+    );
+
+    signingGroup.set(lockHash, {
+      type: "witness_layout_lock",
+      index: index,
+      message: digest,
+    });
+  });
+
+  return txSkeleton.update("signingEntries", (signingEntries) =>
+    signingEntries
+      .push(...Array.from(signingGroup.values()))
+      .sortBy((item) => item.index)
+  );
+}
+
+/**
+ * seal a TransactionSkeleton that is compatible with both cobuild(WitnessLayout) or legacy(WitnessArgs) mode
+ * @example
+ *
+ * sealTransaction
+ *
+ * @param txSkeleton
+ * @param sealingContents
+ * @param message In addition to the SighashAll variant, there is a special SighashAllOnly variant of WitnessLayout. This variant only contains seal, not message. If all witnesses in a transaction are of the SighashAllOnly type, it means that this transaction does not contain any Message.
+ */
+export function sealTransaction(
+  txSkeleton: TransactionSkeletonType,
+  sealingContents: BytesLike[],
+  message?: PackParam<typeof Message>
+): Transaction {
+  const tx = createTransactionFromSkeleton(txSkeleton);
+  const signingEntries = txSkeleton.get("signingEntries");
+  if (sealingContents.length !== signingEntries.size) {
+    throw new Error(
+      `Requiring ${signingEntries.size} sealing contents but provided ${sealingContents.length}!`
+    );
+  }
+
+  // In a CoBuild transaction, only one witness can use SighashAll format containing Message.
+  // For transactions that require signatures from multiple different locks,
+  // only one lock’s corresponding witness can use SighashAll format with Message included;
+  // other lock’s corresponding witnesses should use SighashAllOnly format that contains only signature.
+  let sighashAllHasBeenSet = false;
+
+  signingEntries.forEach((e, i) => {
+    switch (e.type) {
+      case "witness_args_lock": {
+        const witness = bytes.bytify(tx.witnesses[e.index]);
+        const witnessArgs = blockchain.WitnessArgs.unpack(witness);
+        const newWitnessArgs: WitnessArgs = {
+          lock: bytes.hexify(sealingContents[i]),
+        };
+        const inputType = witnessArgs.inputType;
+        if (inputType) {
+          newWitnessArgs.inputType = inputType;
+        }
+        const outputType = witnessArgs.outputType;
+        if (outputType) {
+          newWitnessArgs.outputType = outputType;
+        }
+
+        tx.witnesses[e.index] = bytes.hexify(
+          blockchain.WitnessArgs.pack(newWitnessArgs)
+        );
+        break;
+      }
+      case "witness_layout_lock": {
+        const witnessLayout: Uint8Array =
+          // SighashAll only required when the message is not empty,
+          // and only on SighashAll can be included in a transaction
+          !sighashAllHasBeenSet && message
+            ? WitnessLayout.pack({
+                type: "SighashAll",
+                value: { message, seal: sealingContents[i] },
+              })
+            : WitnessLayout.pack({
+                type: "SighashAllOnly",
+                value: { seal: bytes.concat(sealingContents[i]) },
+              });
+
+        sighashAllHasBeenSet = true;
+        tx.witnesses[e.index] = bytes.hexify(witnessLayout);
+        break;
+      }
+
+      default:
+        throw new Error(`Invalid signing entry: ${e.type}`);
+    }
+  });
+
+  return tx;
+}
diff --git a/packages/cobuild/tests/sighash.test.ts b/packages/cobuild/tests/sighash.test.ts
new file mode 100644
index 000000000..2abfd9b2d
--- /dev/null
+++ b/packages/cobuild/tests/sighash.test.ts
@@ -0,0 +1,198 @@
+import test from "ava";
+import { prepareCobuildSighashSigningEntries, sealTransaction } from "../src";
+import { createTestContext, getDefaultConfig } from "@ckb-lumos/debugger";
+import { TransactionSkeleton } from "@ckb-lumos/helpers";
+import { randomBytes } from "node:crypto";
+import { privateKeyToBlake160, signRecoverable } from "@ckb-lumos/hd/lib/key";
+import { Cell, Script } from "@ckb-lumos/base";
+import { common, omnilock } from "@ckb-lumos/common-scripts";
+import { mockOutPoint } from "@ckb-lumos/debugger/lib/context";
+import { bytes, PackParam } from "@ckb-lumos/codec";
+import { computeScriptHash } from "@ckb-lumos/base/lib/utils";
+import { sealCobuildBlake2bFlow } from "@ckb-lumos/common-scripts/lib/omnilock-cobuild";
+import { Message } from "../src/codec";
+
+const context = createTestContext(getDefaultConfig());
+
+const testConfig = {
+  config: { SCRIPTS: context.scriptConfigs, PREFIX: "ckt" },
+};
+
+const pk1 = bytes.hexify(randomBytes(32));
+const args1 = privateKeyToBlake160(pk1);
+const secp256k1Blake160Lock1: Script = {
+  codeHash: context.scriptConfigs.SECP256K1_BLAKE160.CODE_HASH,
+  hashType: context.scriptConfigs.SECP256K1_BLAKE160.HASH_TYPE,
+  args: args1,
+};
+const omnilock1 = omnilock.createOmnilockScript(
+  { auth: { flag: "SECP256K1_BLAKE160", content: args1 } },
+  testConfig
+);
+
+test("Omnilock without the CoBuild message", async (t) => {
+  const txSkeleton = TransactionSkeleton().asMutable();
+
+  const cell: Cell = {
+    cellOutput: { lock: omnilock1, capacity: "0x111111111" },
+    data: "0x",
+    outPoint: mockOutPoint(),
+  };
+
+  await common.setupInputCell(txSkeleton, cell, undefined, testConfig);
+
+  prepareCobuildSighashSigningEntries(txSkeleton, () => true);
+  t.is(txSkeleton.signingEntries.size, 1);
+
+  const digest = txSkeleton.signingEntries.get(0)!.message;
+  const signature = signRecoverable(digest, bytes.hexify(pk1));
+
+  const signed = sealTransaction(txSkeleton, [
+    sealCobuildBlake2bFlow({ signature }),
+  ]);
+
+  txSkeleton.update("witnesses", (witnesses) =>
+    witnesses.clear().push(...signed.witnesses)
+  );
+
+  const { code } = await context.executor.execute(txSkeleton, {
+    scriptGroupType: "lock",
+    scriptHash: computeScriptHash(omnilock1),
+  });
+
+  t.is(code, 0);
+});
+
+test("Omnilock with the CoBuild message", async (t) => {
+  const privateKey = randomBytes(32);
+  const args = privateKeyToBlake160(bytes.hexify(privateKey));
+
+  const lock = omnilock.createOmnilockScript(
+    { auth: { flag: "SECP256K1_BLAKE160", content: args } },
+    testConfig
+  );
+  const typeRequiresCobuild: Script = {
+    codeHash: context.scriptConfigs.ALWAYS_SUCCESS.CODE_HASH,
+    hashType: context.scriptConfigs.ALWAYS_SUCCESS.HASH_TYPE,
+    args: "0x",
+  };
+
+  const cell: Cell = {
+    cellOutput: {
+      lock: lock,
+      type: typeRequiresCobuild,
+      capacity: "0x111111111",
+    },
+    data: "0x",
+    outPoint: mockOutPoint(),
+  };
+
+  const txSkeleton = TransactionSkeleton().asMutable();
+  await common.setupInputCell(txSkeleton, cell, undefined, testConfig);
+
+  const cobuildMessage: PackParam<typeof Message> = {
+    actions: [
+      {
+        scriptHash: computeScriptHash(typeRequiresCobuild),
+        data: randomBytes(32),
+        scriptInfoHash: randomBytes(32),
+      },
+    ],
+  };
+
+  prepareCobuildSighashSigningEntries(txSkeleton, () => true, cobuildMessage);
+
+  t.is(txSkeleton.signingEntries.size, 1);
+
+  const digest = txSkeleton.signingEntries.get(0)!.message;
+  const signature = signRecoverable(digest, bytes.hexify(privateKey));
+
+  const signed = sealTransaction(
+    txSkeleton,
+    [sealCobuildBlake2bFlow({ signature })],
+    cobuildMessage
+  );
+
+  txSkeleton.update("witnesses", (witnesses) =>
+    witnesses.clear().push(...signed.witnesses)
+  );
+
+  const { code } = await context.executor.execute(txSkeleton, {
+    scriptGroupType: "lock",
+    scriptHash: computeScriptHash(lock),
+  });
+
+  t.is(code, 0);
+});
+
+test("Cobuild works with legacy WitnessArgs", async (t) => {
+  const txSkeleton = TransactionSkeleton().asMutable();
+
+  const omnilockCell: Cell = {
+    cellOutput: { lock: omnilock1, capacity: "0x111111111" },
+    data: "0x",
+    outPoint: mockOutPoint(),
+  };
+
+  const secp256k1Cell: Cell = {
+    cellOutput: { lock: secp256k1Blake160Lock1, capacity: "0x111111111" },
+    data: "0x",
+    outPoint: mockOutPoint(),
+  };
+
+  await common.setupInputCell(txSkeleton, omnilockCell, undefined, testConfig);
+  await common.setupInputCell(txSkeleton, secp256k1Cell, undefined, testConfig);
+
+  common.prepareSigningEntries(txSkeleton, testConfig);
+  // secp256k1Blake160 and omnilock
+  t.is(txSkeleton.signingEntries.size, 2);
+
+  // prepare
+  prepareCobuildSighashSigningEntries(
+    txSkeleton,
+    (script) => script.codeHash === testConfig.config.SCRIPTS.OMNILOCK.CODE_HASH
+  );
+
+  // secp256k1Blake160 and omnilock
+  t.is(
+    txSkeleton.signingEntries.size,
+    2,
+    "the cobuild prepareCobuildSighashSigningEntries should remove the existed WitnessLayoutEntry"
+  );
+  const witnessLayoutEntries = txSkeleton.signingEntries.filter(
+    ({ type }) => type === "witness_layout_lock"
+  );
+  t.is(witnessLayoutEntries.size, 1);
+
+  const digest0 = txSkeleton.signingEntries.get(0)!.message;
+  const signature0 = signRecoverable(digest0, pk1);
+
+  const digest1 = txSkeleton.signingEntries.get(1)!.message;
+  const signature1 = signRecoverable(digest1, pk1);
+
+  const signed = sealTransaction(txSkeleton, [
+    sealCobuildBlake2bFlow({ signature: signature0 }),
+    signature1,
+  ]);
+
+  txSkeleton.update("witnesses", (witnesses) =>
+    witnesses.clear().push(...signed.witnesses)
+  );
+
+  const { code: omnilockResult } = await context.executor.execute(txSkeleton, {
+    scriptGroupType: "lock",
+    scriptHash: computeScriptHash(omnilock1),
+  });
+
+  t.is(omnilockResult, 0);
+
+  const { code: secp256k1Blake160Result } = await context.executor.execute(
+    txSkeleton,
+    {
+      scriptGroupType: "lock",
+      scriptHash: computeScriptHash(secp256k1Blake160Lock1),
+    }
+  );
+
+  t.is(secp256k1Blake160Result, 0);
+});
diff --git a/packages/cobuild/tsconfig.json b/packages/cobuild/tsconfig.json
new file mode 100644
index 000000000..1b551f4e9
--- /dev/null
+++ b/packages/cobuild/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "lib"
+  },
+  "include": ["src"]
+}
diff --git a/packages/cobuild/typedoc.json b/packages/cobuild/typedoc.json
new file mode 100644
index 000000000..f593f276c
--- /dev/null
+++ b/packages/cobuild/typedoc.json
@@ -0,0 +1,4 @@
+{
+  "extends": ["../../typedoc.base.json"],
+  "entryPoints": ["src/index.ts"]
+}
diff --git a/packages/common-scripts/src/omnilock-cobuild.ts b/packages/common-scripts/src/omnilock-cobuild.ts
new file mode 100644
index 000000000..728f21285
--- /dev/null
+++ b/packages/common-scripts/src/omnilock-cobuild.ts
@@ -0,0 +1,26 @@
+import { HexString } from "@ckb-lumos/base";
+import { OmnilockWitnessLock } from "./omnilock";
+import { bytes, PackParam } from "@ckb-lumos/codec";
+
+/**
+ * @example
+ *
+ * cobuild.sealTransaction(
+ *   txSkeleton,
+ *   [sealCobuildBlake2bFlow(secp256k1SignRecoverable(digest, privateKey))]
+ * )
+ * @see https://github.com/XuJiandong/omnilock/blob/91efc8ac0018e391e6d29c1cd41f69b16fa5d89d/c/cobuild.c#L480-L481
+ * @param witnessLock
+ */
+export function sealCobuildBlake2bFlow(
+  witnessLock: PackParam<typeof OmnilockWitnessLock>
+): HexString {
+  return bytes.hexify(
+    bytes.concat(
+      // the first byte of the cobuild signature is a flag to determine which message calculation flow should be applied
+      // @see https://github.com/XuJiandong/omnilock/blob/91efc8ac0018e391e6d29c1cd41f69b16fa5d89d/c/cobuild.c#L90
+      [0x00],
+      OmnilockWitnessLock.pack(witnessLock)
+    )
+  );
+}
diff --git a/packages/common-scripts/src/omnilock.ts b/packages/common-scripts/src/omnilock.ts
index 7107b52e6..8bec89d7c 100644
--- a/packages/common-scripts/src/omnilock.ts
+++ b/packages/common-scripts/src/omnilock.ts
@@ -36,6 +36,7 @@ import {
 } from "@ckb-lumos/codec/lib/blockchain";
 import { bytify, hexify } from "@ckb-lumos/codec/lib/bytes";
 import * as bitcoin from "./omnilock-bitcoin";
+import * as cobuild from "./omnilock-cobuild";
 
 const { ScriptValue } = values;
 
@@ -374,6 +375,7 @@ export function prepareSigningEntries(
 }
 
 export { bitcoin };
+export { cobuild };
 
 export default {
   prepareSigningEntries,
diff --git a/packages/common-scripts/tests/inputs.ts b/packages/common-scripts/tests/inputs.ts
index 5c3a4f4a5..5314bf747 100644
--- a/packages/common-scripts/tests/inputs.ts
+++ b/packages/common-scripts/tests/inputs.ts
@@ -7,7 +7,7 @@ export const charlesOmnilockInputs: Cell[] = [
       capacity: "0x174876e800",
       lock: {
         codeHash:
-          "0x768f306681da232ceb0b94f436c5f813377179762a831c5ad8797bd4fd2d118d",
+          "0x3eb4eaac9232460e121ae514cab4d9016ffa5a526ce9d376c3d29bcf3175c441",
         hashType: "data",
         args: "0x00e3e0a82b199dceadb55e223c6e4b8e511d57d24900",
       },
@@ -28,7 +28,7 @@ export const charlesOmnilockInputs: Cell[] = [
       capacity: "0x174876e800",
       lock: {
         codeHash:
-          "0x768f306681da232ceb0b94f436c5f813377179762a831c5ad8797bd4fd2d118d",
+          "0x3eb4eaac9232460e121ae514cab4d9016ffa5a526ce9d376c3d29bcf3175c441",
         hashType: "data",
         args: "0x00e3e0a82b199dceadb55e223c6e4b8e511d57d24900",
       },
diff --git a/packages/debugger/contracts/omni_lock_fd6674d b/packages/debugger/contracts/omni_lock_fd6674d
new file mode 100755
index 000000000..99be45b39
Binary files /dev/null and b/packages/debugger/contracts/omni_lock_fd6674d differ
diff --git a/packages/debugger/src/context.ts b/packages/debugger/src/context.ts
index 8081979f8..f1f23038e 100644
--- a/packages/debugger/src/context.ts
+++ b/packages/debugger/src/context.ts
@@ -155,7 +155,7 @@ export function getDefaultConfig(): {
       },
       OMNILOCK: {
         depType: "code",
-        path: path.join(__dirname, "../contracts/omni_lock_9419b77"),
+        path: path.join(__dirname, "../contracts/omni_lock_fd6674d"),
       },
       DAO: {
         depType: "code",
diff --git a/packages/lumos/src/common-scripts/omnilock.ts b/packages/lumos/src/common-scripts/omnilock.ts
index 99070eaba..9c7fea291 100644
--- a/packages/lumos/src/common-scripts/omnilock.ts
+++ b/packages/lumos/src/common-scripts/omnilock.ts
@@ -5,5 +5,6 @@ export {
   setupInputCell,
   CellCollector,
   prepareSigningEntries,
+  cobuild,
 } from "@ckb-lumos/common-scripts/lib/omnilock";
 export type { OmnilockInfo } from "@ckb-lumos/common-scripts/lib/omnilock";
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index bc6b2217f..691b15187 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -206,6 +206,37 @@ importers:
         specifier: ^15.0.4
         version: 15.0.4
 
+  packages/cobuild:
+    dependencies:
+      '@ckb-lumos/base':
+        specifier: 0.22.0-next.5
+        version: link:../base
+      '@ckb-lumos/codec':
+        specifier: 0.22.0-next.5
+        version: link:../codec
+      '@types/blake2b':
+        specifier: ^2.1.3
+        version: 2.1.3
+      blake2b:
+        specifier: ^2.1.3
+        version: 2.1.3
+    devDependencies:
+      '@ckb-lumos/common-scripts':
+        specifier: 0.22.0-next.5
+        version: link:../common-scripts
+      '@ckb-lumos/debugger':
+        specifier: 0.22.0-next.5
+        version: link:../debugger
+      '@ckb-lumos/hd':
+        specifier: 0.22.0-next.5
+        version: link:../hd
+      '@ckb-lumos/helpers':
+        specifier: 0.22.0-next.5
+        version: link:../helpers
+      '@ckb-lumos/molecule':
+        specifier: 0.22.0-next.5
+        version: link:../molecule
+
   packages/codec:
     dependencies:
       '@ckb-lumos/bi':
@@ -5876,6 +5907,10 @@ packages:
     resolution: {integrity: sha512-Mv8N0qtdb72iW1XJR/4Yp01frtibnv8BpFUZDROnzd7hVEX4cEN/xHgU2ZfsnOnTDt+fHJVc0uRIWcNz6uIB2A==}
     dev: false
 
+  /@types/blake2b@2.1.3:
+    resolution: {integrity: sha512-MFCdX0MNxFBP/xEILO5Td0kv6nI7+Q2iRWZbTL/yzH2/eDVZS5Wd1LHdsmXClvsCyzqaZfHFzZaN6BUeUCfSDA==}
+    dev: false
+
   /@types/bn.js@4.11.6:
     resolution: {integrity: sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==}
     dependencies:
