khoslaventures / blockchain

A simple Blockchain written in Golang

Blockchain in Golang

Some practice for getting better at Go. This is a persistent (BadgerDB) blockchain implementation with Proof of Work, Merkle Trees and command line interface. This leverages the new Go modules dependency management system.

Usage

# Will print out blockchain, if no blocks, will create genesis
go run main.go print

# Add a block, with a string of BLOCK_DATA
go run main.go add -block BLOCK_DATA

Example

go run main.go add -block "send 10 BTC to bob"

TODOs

• Proof of Work
• Basic block structure
• Begin command line interface
• Add a persistence layer like BadgerDB or BoltDB
• Transactions
• Accounts/Private Key Management
• Basic Wallet CLI
• Digital Signatures
• UTXO Persistence
• Merkle Trees (fraud proofs, light client support)
• Networking Between Clients
• Dynamic difficulty (Optional)
• Light client (Optional)