README.md

Blockchain from Scratch

This project aims to implement a simple blockchain from scratch using Golang. The goal is to understand the core components of blockchain technology, such as block creation, chain linking, and mining algorithms.

Features

• Block creation with basic data structure
• Hashing mechanism for linking blocks
• Consensus mechanism, maybe POW、POS...
• Peer-to-peer communication
• Transaction management
• .....more

Getting Started

To run the project, clone the repository and follow the instructions below.

Prerequisites

• Golang 1.23 or later

Installation

git clone https://github.com/yourusername/blockchain-from-scratch.git
cd blockchain-from-scratch

Run Command

1. createwallet

go run cmd/main.go createwallet
go run cmd/main.go createwallet

2. createblockchain

go run cmd/main.go createblockchain -address 15NNQXN8JyMrtPK3qzS1DE2hgGLABmkXWT
INFO[0000] NewCoinbaseTx to '15NNQXN8JyMrtPK3qzS1DE2hgGLABmkXWT'
INFO[0000] No existing blockchain found. Creating a new one...
INFO[0000] Mining a new block
009122593169229cd3b11ef4c6564ea3ab82c43540a28cade87b6b8c8563b308
INFO[0000] ======= Reindex UTXO ======
Done!

3. transfer

go run cmd/main.go send -from WALLET_1 -to WALLET_2 -amount 10 -mine
go run cmd/main.go send -from WALLET_3 -to WALLET_4 -amount 10

-mine 标志指的是块会立刻被同一节点挖出来, 不指定的话交易将由矿工打包出块

4. getBalance

go run cmd/main.go getbalance  -address 15NNQXN8JyMrtPK3qzS1DE2hgGLABmkXWT
INFO[0000] Balance of '15NNQXN8JyMrtPK3qzS1DE2hgGLABmkXWT': 14

5. printChain

go run cmd/main.go printchain

7. // TODO....

Release & Deliverable

• docs

References

• How does Blockchain work? - Simply Explained - A YouTube video explaining blockchain basics in simple terms.
• Build your own Blockchain / Cryptocurrency - A list of how to design you own chain
• Yu - Yu is a highly customizable blockchain framework.
• Building Blockchain in Go - A blog that guide you Building Blockchain in Go step by step