BlockchainJS/example-pos.js at master · schefa/BlockchainJS · GitHub

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const Blockchain = require('./src/Blockchain.js');
const Transaction = require('./src/Transaction.js');
const Participants = require('./src/Participants.js');
const ProofOfStake = require('./consensus/proof-of-stake.js');

repeat_lines = 50;

console.log("-".repeat(repeat_lines))
console.log("New Blockchain started with Proof of Stake")
console.log("-".repeat(repeat_lines))
let blockchain = new Blockchain('pos');
console.log("Genesis Block 1 created")
console.log("-".repeat(repeat_lines))

console.log("-".repeat(repeat_lines))
console.log("\nValidators joining the network...");

let proofofstake = new ProofOfStake();
nodes = ProofOfStake.setBalanceForNodes(Participants.nodes());
nodes[0] = proofofstake.createValidator(nodes[0], 200);
nodes[1] = proofofstake.createValidator(nodes[1], 100);
proofofstake.validators.forEach(function(validator){
    console.log(validator[0] + " has a stake of " + validator[1]);
});

console.log("-".repeat(repeat_lines))
console.log('\nFirst Transactions created...\n');
blockchain.createTransaction(new Transaction(Participants.accounts()[0][0],Participants.accounts()[1][0],100));
blockchain.createTransaction(new Transaction(Participants.accounts()[1][0],Participants.accounts()[0][0],50));

console.log("-".repeat(repeat_lines))
console.log('Creating Block 2...');
console.log('\nChoosing validator...');
let validator = proofofstake.getValidatorWithMaxStake()[0];
console.log("Validator with the highest stake chosen: " + validator)
blockchain.generateBlock(validator);

console.log("-".repeat(repeat_lines))
console.log('Creating Block 3...');
console.log('\nChoosing validator...');
validator = proofofstake.getValidatorWithMaxStake()[0];
console.log("Validator with the highest stake chosen: " + validator);

blockchain.generateBlock(validator);
console.log('\nMiner of Block 2 is been rewarded...');

/**
 * Validation check of the blockchain
 */
console.log("\n"+"-".repeat(repeat_lines)+"\n"+"-".repeat(repeat_lines))
console.log("Validation check...")
blockchain.validationCheck();

/**
 * Print balances
 */
console.log("\n"+"-".repeat(repeat_lines))
Participants.nodes().forEach(function(account){
    console.log('Balance of '+account[0]+':\t'+ blockchain.getBalanceOfAddress(account[0]))
});
Participants.accounts().forEach(function(account){
    console.log('Balance of '+account[0]+':\t'+ blockchain.getBalanceOfAddress(account[0]))
});

/**
 * Print blockchain
 */
console.log("\n"+"-".repeat(repeat_lines)+"\n"+"-".repeat(repeat_lines))
console.log("Blockchain")
console.log(JSON.stringify(blockchain.chain,'', 4));
console.log("-".repeat(repeat_lines))
console.log("Pending transactions")
console.log(JSON.stringify(blockchain.pendingTransactions,'', 4));