Block Node

[Nana-EC]

Description:
Abstract
This HIP introduces and proposes the adoption of a new node type that is designed to parse the block stream, store
latest state and serve up additional network APIs such as state proofs and block retrieval that support decentralized
querying and verification of state.

A block node will primarily sit in between a consensus node and a mirror node to serve as a decentralized source of
verifiable network state and transaction information. As an emergent feature a block node will introduce a new node
economy through independent community operations. Anyone will be able to independently run a block node or block
stream parsing product that provides value added services to users e.g. aggregated data insights, data availability.

Block Nodes will have a rich API, allowing consumers to receive a subset of the stream, or the full stream. Block Nodes
can innovate on payment -- they can be commercial and have connectivity rules / rate limits / SLAs for customers.
They can require payment for serving blocks, or they can serve blocks for free.

Related issue(s):

Expands on #1055

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

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[jsync-swirlds]

About half way through the hip document so far.

[jsync-swirlds]

Finally reached the end of the document.

[mgarbs]

Hello everyone,

I hope this message finds you well!

I am reaching out just to give a gentle reminder regarding the open PR titled "Block Node". Currently, we still have 42 unresolved discussions which need your valuable input. It'd be really helpful if we could collaborate and get these discussions resolved to make further progress on this PR.

I appreciate your time, commitment, and collaboration thus far. Your thoughts and perspectives continue to be essential in making sure we're moving in the right direction.

Thank you again for your contributions to this project. Looking forward to concluding these discussions and achieving our overall goal together!

Best regards,
Michael
@jsync-swirlds
@Nana-EC

[Nana-EC]

Hello everyone,

I hope this message finds you well!

I am reaching out just to give a gentle reminder regarding the open PR titled "Block Node". Currently, we still have 42 unresolved discussions which need your valuable input. It'd be really helpful if we could collaborate and get these discussions resolved to make further progress on this PR.

I appreciate your time, commitment, and collaboration thus far. Your thoughts and perspectives continue to be essential in making sure we're moving in the right direction.

Thank you again for your contributions to this project. Looking forward to concluding these discussions and achieving our overall goal together!

Best regards, Michael @jsync-swirlds @Nana-EC

Thanks @mgarbs
A few commits are coming through to address the comments and fill in some of the empty sections