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https://github.com/volodymyrprokopyuk/go-blockchain

Go blockchain
https://github.com/volodymyrprokopyuk/go-blockchain

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Go blockchain

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README 

        
* Go blockchain



Note: if you find this guide useful, please, *share the guide with your

friends*, so they take the same advantage as you do by learning the fundamental

blockchain concepts and practicing how to build a blockchain in Go from scratch



** Abstract



A *foundational* and *practical* guide for *effectively learning* the

fundamental blockchain concepts and *progressively building* a blockchain from

scratch in Go with gRPC. An interesting and challenging adventure that takes you

from the *foundational concepts and purpose* through the *technical design and

implementation* to the *practical testing and usage* of the proposed blockchain



- Simple, yet non-trivial :: The guide introduces the blockchain concepts that

  are /simple to understand/ and the technical design solutions that are /simple

  to implement/. However, the /proposed blockchain is not trivial/. The

  blockchain has all the key components of a modern blockchain: the state

  initialization and synchronization, the peer discovery, the transaction relay,

  the block proposer with the block validators being part of the Proof of

  Authority (PoA) simple consensus, the block relay, the event stream of domain

  events, the gRPC server, and the graceful node shutdown

- Concise, yet detailed :: The guide describes the fundamental blockchain

  concepts and the technical design solutions in the /concise and clear form/,

  focusing on the /purpose what/ and the /reasons why/ behind the key blockchain

  components. /Enough details/ behind the technical design solutions are

  provided to support /deeper understanding/ of the internal working of the

  components of the proposed blockchain

- Practical, yet well-grounded :: The guide emphasizes the /learn by doing/

  approach to effectively learning the fundamental blockchain concepts and

  progressively building the blockchain components from scratch. /Practical

  experience/ of developing, testing, and using the proposed blockchain is a

  great motivator to get deeper understanding of the fundamental blockchain

  concepts and the technical design solutions. Once the key mechanics of the

  blockchain components are understood, the more /abstract theoretical concepts/

  naturally fill the gaps in the knowledge acquired through practical

  experiments



** Contents



*** Blockchain state



1. [@1] [[/doc/getting-started.org][Getting started]]

/Prerequisites/, /dependencies/, /installation/, /testing/, /directory

structure/

2. [@2] [[/doc/account.org][Account]]

/Blockchain account/, /account address/, /account balance/, /create account/,

/persist account/, /re-create account/, /Secp256k1 account/, /Keccak256 account

address/, /Secp256k1 key pair/, /Keccak256 hash function/, /AES-GCM encryption

with Argon2 KDF/

3. [@3] [[/doc/transaction.org][Transaction]]

/Blockchain transaction/, /transaction nonce/, /double spending problem/,

/transaction replay attack/, /sign transaction/, /verify transaction/, /search

transactions/, /Keccak256 hash function/, /ECDSA Secp256k1 digital signature/,

/ECDSA Secp256k1 transaction verification/, /gRPC server streaming/, /Go

iterators/

4. [@4] [[/doc/block.org][Block]]

/Blockchain genesis/, /blockchain block/, /chain of blocks/, /block store/,

/create genesis/, /persist genesis/, /re-create genesis/, /persist block/,

/re-create block/, /search blocks/, /Keccak256 hash function/, /ECDSA Secp256k1

digital signature/, /ECDSA Secp256k1 block verification/, /gRPC server

streaming/, /Go iterators/

5. [@5] [[/doc/state.org][State]]

/Blockchain state/, /confirmed state/, /pending state/, /apply transaction/,

/transaction life cycle/, /create block/, /apply block/, /block life cycle/,

/concurrency safe application of transactions and blocks/, /Go mutex

concurrency/



*** Blockchain node



6. [@6] [[/doc/state-sync.org][State sync]]

/Blockchain initialization/, /state synchronization algorithm/, /initialize

bootstrap node/, /synchronize out-of-sync node/, /create genesis/, /synchronize

genesis/, /read blocks/, /synchronize blocks/, /Go iterators/

7. [@7] [[/doc/peer-discovery.org][Peer discovery]]

/Peer discovery/, /bootstrap node/, /seed node/, /concurrency safe peer

discovery/, /peer discovery algorithm/, /node graceful shutdown mechanism/, /Go

mutex concurrency/, /Go context/, /Go channel composition/

8. [@8] [[/doc/transaction-relay.org][Transaction relay]]

/Transaction relay/, /concurrency safe peers monitoring/, /concurrent generic

message relay/, /gRPC client streaming/, /Go channel concurrency/, /Go channel

composition/, /Go channel multiplexing/, /Go generics/

9. [@9] [[/doc/block-proposer.org][Block proposer]]

/Proof of Authority consensus/, /block proposer algorithm/, /block relay/, /gRPC

client streaming/, /Go channel concurrency/, /Go channel composition/, /Go

channel multiplexing/, /Go generics/

10. [@10] [[/doc/event-stream.org][Event stream]]

/Node event stream/, /event publisher/, /concurrency safe event streaming/,

/domain event multiplexing/, /gRPC server streaming/, /Go mutex concurrency/,

/Go channel concurrency/, /Go channel composition/, /Go channel multiplexing/

11. [@11] [[/doc/blockchain-node.org][Blockchain node]]

/Blockchain node/, /peer-to-peer network of nodes/, /peer discovery/, /state

sync/, /confirmed state/, /pending state/, /transaction relay/, /Proof of

Authority consensus/, /block proposer/, /block relay/, /block application/,

/block confirmation/, /event stream/, /node graceful shutdown mechanism/, /node

gRPC server/, /Node CLI/, /start node/, /blockchain peer-to-peer network with

two nodes/