go-wallet 🪙

A minimal cryptocurrency wallet and blockchain simulation built in Go.
This project aims to provide a hands-on learning experience with core blockchain concepts like key generation, transaction signing, block creation, and eventually mining and chain validation.

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Features Implemented

Wallet

• ECDSA key pair generation (P256 curve)
• Wallet address derived from public key hash
• Transaction message signing (with r, s values)
• Message verification with public key

Transactions

• Basic Transaction struct with:
  • Sender address
  • Recipient address
  • Amount
  • Signature (r, s)

Blocks

• Basic Block struct with:
  • Index
  • Timestamp
  • List of transactions
  • Previous hash
  • Nonce
  • Hash (SHA-256 of block contents)
• Genesis block creation

TODO

->Blockchain Login ->Proof of work ->Mempool ->Save blockchain to file, load on startup ->CLI/UI

Requirements

• GO 1.18