This library lets you initialize a blockchain and perform transactions between peers. This implementation uses the proof of work method to build new blocks. Transactions are signed with a 1024 bit RSA key pair and you can create new wallets with unique key pairs. I will keep working on this library as I find new features for this implementation.
- Blockchain implementation with user wallets
- Blockchain validators and transaction signatures
- Block mining rewards for block miners
- Export and import module for blockchain data
- Unit tests with GitHub Workflow
- P2P blockchain nodes (Still under development)
- Blockchain based voting system and chat module
- Test GUI for basic wallet operations in the old version
from Blockchain import Blockchain
from Wallet import Wallet
from Transaction import Transaction
# -----------------------------------------------------------------
# Initialize the blockchain:
# Mining Difficulty and reward should be passed as arguments.
# A genesis block will be mined after initialization.
blockchain = Blockchain(2, 1)
# hashingDifficulty = 2, gasPrice = 1
# -----------------------------------------------------------------
# Creating two new wallets:
# We generate two new user wallets. Wallet will
# generate a new RSA key pair for each user.
# These key pairs will be used to sign and validate transactions.
# A public key defines the address of the user.
wallet1 = Wallet("person1")
wallet2 = Wallet("person2")
# -----------------------------------------------------------------
# Transactions
# Force transaction to person1:
blockchain.forceTransaction(wallet1.publicKey, 1000)
# Transaction between two wallets:
# Sender signs the transaction with his private key and the transaction
# will be validated by its signature to make sure if the sender is the real sender.
blockchain.addTransaction(Transaction(
wallet1.publicKey, wallet2.publicKey, 10, wallet1.privateKey))
# Sender pays transaction fees to the miner (7).
blockchain.handleTransaction(wallet2.publicKey)
# Updating balances of users:
wallet1.updateTransactions(blockchain)
wallet2.updateTransactions(blockchain)
# wallet1.coins: 983
# wallet2.coins: 17In the old version of blockchain, GUI is still available.
