expt-blockchain-in-golang

Experiment with blockchain from scratch using golang

Used BoltDB as it's easy to install with go application.

(code: PLN-STAGES)

Done

• ✅ Setup basic structure and adding new blocks.
• ✅ Store blockchain in a DB.
• ✅ Implement PoW.
• ✅ Mining process.
• ✅ Block validation.
• ✅ Implement addresses and transactions.
  • ✅ Address generation(withtin the app for now). Basic version for now. Wallets should be implemented.
    • Addresses are saved in a db(for now).
    • Private keys are encrypted before stoting.
  • ✅ Basic transactions setup.
  • ✅ Signing transactions.
• ✅ Transaction verification.(In the mining process for now)
  • ✅ Signature verification.
  • ✅ UTXO validation.
  • ✅ Balance validation.
• ✅ Block hash using Merkle tree.
• Implement wallets and transfer address generation into wallets.
• ✅ Create transaction pool for UTXOs(Mempool).
• Update NewBlock() to get UTXOs from pool.
• ✅ Implement a Miner.
  • A simple one for now. After mining is completed and data is valid it broadcast TX ids through a channel and listener will remove those from mempool.

Todo

• Test coverage
• Implement Merkle proof and verification
• Node system.
• Broadcasting.
• Handle concurrency? (code: PNL-CONCURRENCY)

Resources used

• https://jeiwan.net/posts/building-blockchain-in-go-part-1
• https://www.twilio.com/en-us/blog/encrypt-and-decrypt-data-in-go-with-aes-256