Sigillum, Simple Proof of Stake Blockchain in Go

🚀 Overview

This project is a simple implementation of a Proof of Stake (PoS) blockchain written in Go.
It demonstrates the basic concepts of block creation, chain validation, and validator selection based on stake (weight).

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🧱 Features

• Define a basic Block structure with fields like Index, Timestamp, Data, PreviousHash, Hash, and Validator.
• Define a Blockchain that stores blocks in a slice.
• Support multiple validators, each with a configurable stake.
• Choose the validator for each new block based on their stake (weighted random selection).
• Validate each block before adding it to the chain.
• Simple hash generation using SHA-256.

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⚖️ How Proof of Stake Works in This Project

• Each validator has a stake (an integer value representing their tokens).
• When a new block is to be added, a validator is selected randomly, but weighted by their stake.
• The chosen validator "proposes" the new block.
• The block is validated (index, hashes, etc.) and then appended to the blockchain.

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💻 How to Run

go run main.go

Future Improvements

• Add digital signatures for validators.
• Add dynamic stake updates (validators can increase or decrease their stake).
• Implement validator slashing (penalties for malicious behavior).
• Add networking to support multiple nodes and chain synchronization.

Contributing

Feel free to fork this project, open issues, or submit pull requests to improve the implementation or add new features!

📜 License

This project is open source and available under the MIT License.