Substrate Bitcoin-Like Blockchain Introduction

This repository is derived from Academy-PoW, originally designed as a learning resource. While implementing a Bitcoin-like blockchain, I faced several challenges that required updates and fixes to ensure smooth execution. Additionally, I transitioned the account model from an Account-based system to a UTXO-based approach. This implementation builds upon the foundational work from Building a UTXO Chain from Scratch | Substrate Seminar. Inspired by this resource, I aimed to further enhance the project, incorporating my own insights and improvements.

Prerequisites

Before starting this interactive tutorial, you should have a basic understanding of Substrate and FRAME development. If you're new to these concepts, it's highly recommended to complete the introductory Substrate tutorials available in the official documentation. For example Substrate Interactive Tutorial - Polkadot Study.

Useful Resources

Here are some essential resources that will assist you throughout this tutorial:

• Set Up Substrate Development Environment – Choose your environment and complete the installation of required packages and Rust.
• Polkadot SDK Documentation – In-depth reference for the Polkadot SDK.
• Simulating a Substrate Network – Learn how to simulate a network in Substrate.
• Unspent Transaction Output (UTXO) – Understanding UTXO account model.
• Proof of Work code breakdown – Learn how the Proof of Work code is implemented.

By following these resources, you’ll gain a solid foundation in Substrate development, enabling you to make the most of this tutorial. 🚀

Overview of Bitcoin-like Blockchain in Substrate we will be building:

graph TD;
    subgraph UTXO_Runtime
        Timestamp -->|Time trait| Difficulty
        Block_Author -->|BlockAuthor| UTXO
        Bitcoin_Halving --> |Issuance| UTXO
        FRAME_System

        subgraph Difficulty
            Sha3_Difficulty
            Keccak_Difficulty
            Md5_Difficulty
        end
    end

    subgraph UTXO_Node
        subgraph Multi_PoW_Consensus
            Sha3_Algorithm
            Keccak_Algorithm
            Md5_Algorithm
        end

        Tx_Pool
    end

    Difficulty --> Difficulty_API{{Difficulty API}}
    Difficulty_API --> Multi_PoW_Consensus
    UTXO --> Tx_Pool_API{{Tx Pool API}}
    Tx_Pool_API --> Tx_Pool