Можете подсказать почему не запускается?

в самом блокчейне

Можете подсказать почему не запускается?

еще вопрос MINT, INITIAL RELEASE KEY, PUBLIC KEY, KEY 2, PUBLIC KEY 2, где сгенерировать не подскажите, или можно самому придумать?

Можете подсказать почему не запускается?

а можно еще вопрос, вот еще ошибка

this.transactions.push(transaction);
^

TypeError: Cannot read property 'push' of undefined
at Blockchain.addTransaction (C:\Users\SH4\Desktop\D.I.G. Blockchain\digchain.js:82:31)
at Object. (C:\Users\SH4\Desktop\D.I.G. Blockchain\digchain.js:154:10)
←[90m at Module._compile (internal/modules/cjs/loader.js:1068:30)←[39m
←[90m at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)←[39m
←[90m at Module.load (internal/modules/cjs/loader.js:933:32)←[39m
←[90m at Function.Module._load (internal/modules/cjs/loader.js:774:14)←[39m
←[90m at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)←[39m
←[90m at internal/main/run_main_module.js:17:47←[39m

Можете подсказать почему не запускается?

SyntaxError: await is only valid in async functions and the top level bodies of modules

Можете подсказать почему не запускается?

я попробовал но вышла ошибка

const crypto = await import("crypto");

const SHA256 = message => crypto.createHash("sha256").update(message).digest("hex");
const elliptic = await import("elliptic");
const EC = elliptic.default.ec;
const ec = new EC("secp256k1");
const MINT_KEY_PAIR = ec.genKeyPair();
const MINT_PUBLIC_ADDRESS = MINT_KEY_PAIR.getPublic("hex");
const holderKeyPair = ec.genKeyPair();

// const keyPair = ec.genKeyPair();
// public key: key.Pair.getPublic("hex");
// private key: key.Pair.get.Private("hex");

class Block {
constructor(timestamp = "", data = []) {
this.timestamp = timestamp;
this.data = data;
this.hash = this.getHash();
this.prevHash = "";
this.nonce = 0;
}

getHash() {
return SHA256(JSON.stringify(this.data) + this.timestamp + this.prevHash + this.nonce);
}

mine(difficulty) {
while(!this.hash.startsWith(Array(difficulty + 1).join("0"))){
this.nonce++;
this.hash = this.getHash();
}
}

hasValidTransactions(chain) {
return this.data.every(transaction => transaction.isValid(transaction, chain));
}
}

class Blockchain {
constructor() {
const initialCoinRelease = new Transaction(MINT_PUBLIC_ADDRESS, holderKeyPair.getPublic("hex"), 100000)
this.chain = [new Block(Date.now().toString(), [initialCoinRelease])];
this.difficulty = 1;
this.blockTime = 30000;
this.transactions = [];
this.reward = 297;
}

getLastBlock() {
return this.chain[this.chain.length - 1]
}

getBalance(address) {
let balance = 0;

this.chain.forEach(block => {
block.data.forEach(transaction => {
if(transaction.from === address) {
balance -= transaction.amount;
balance -= transaction.gas;
}

if(transaction.to === address) {
balance += transaction.amount;
}
})
})

return balance;
}

addBlock(block) {
block.prevHash = this.getLastBlock().hash;
block.hash = block.getHash();

block.mine(this.difficulty);

this.chain.push(block);

this.difficulty += Date.now() - parseInt(this.getLastBlock().timestamp) < this.blockTime ? 1 : -1;
}

addTransaction(transaction) {
if (transaction.isValid(transaction, this)) {
this.transactions.push(transaction);
}

}

mineTransactions(rewardAddress) {
let gas = 0;

this.transactions.forEach(transaction => {
gas += transaction.gas;
})

const rewardTransaction = new Transaction(MINT_PUBLIC_ADDRESS, rewardAddress, this.reward + gas);
rewardTransaction.sign(MINT_KEY_PAIR);

if (this.transactions.length !==0) this.addBlock(new Block(Date.now().toString(), [rewardTransaction, ...this.transactions]));

this.transactions = [];
}

isValid(blockchain = this) {
for (let i = 1; i < blockchain.chain.length; i++) {
const currentBlock = blockchain.chain[i];
const prevBlock = blockchain.chain[i-1];

if (
currentBlock.hash !== currentBlock.getHash() ||
currentBlock.prevHash !== prevBlock.hash ||
currentBlock.hasValidTransactions(blockchain)
) {
return false;
}
}
return true;
}
}

class Transaction {
constructor(from, to, amount, gas = 0) {
this.from = from;
this.to = to;
this.amount = amount;
this.gas = gas;
}

sign(keyPair) {
if (keyPair.getPublic("hex") === this.from) {
this.signature = keyPair.sign(SHA256(this.from + this.to + this.amount + this.gas), "base64").toDER("hex");
}
}

isValid(tx, chain) {
return (
tx.from &&
tx.to &&
tx.amount &&
(chain.getBalance(tx.from) >= tx.amount + tx.gas || tx.from === MINT_PUBLIC_ADDRESS && tx.amount === this.reward) &&
ec.keyFromPublic(tx.from, "hex").verify(SHA256(tx.from + tx.to + tx.amount + tx.gas), tx.signature)
)
}
}

const Palihchain = new Blockchain();

// Your original balance is 100000

const girlfriendWallet = ec.genKeyPair();

const transaction = new Transaction(holderKeyPair.getPublic("hex"), girlfriendWallet.getPublic("hex"), 333, 10);

transaction.sign(holderKeyPair);

Palihchain.addTransaction(transaction);

Palihchain.mineTransactions(girlfriendWallet.getPublic("hex"));

console.log("Your balance:", Palihchain.getBalance(holderKeyPair.getPublic("hex")));
console.log("Her balance:", Palihchain.getBalance(girlfriendWallet.getPublic("hex")));

Можете подсказать почему не запускается?

Алексей Уколов, так вот и спрашиваю, начинаю запускать цепочку вылазит вот это

this.signature = key.Pair.sign(SHA256(this.from + this.to + this.amount + this.gas), "base64").toDER("hex");

Transaction.sign (C:\Users\ooobi_000\Desktop\Мой блокчейн\palihchain.js:129:30)
at Object. (C:\Users\ooobi_000\Desktop\Мой блокчейн\palihchain.js:152:13)
at Module._compile (node:internal/modules/cjs/loader:1109:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
at Module.load (node:internal/modules/cjs/loader:989:32)
at Function.Module._load (node:internal/modules/cjs/loader:829:14)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
at node:internal/main/run_main_module:17:47

Можете подсказать почему не запускается?

Алексей Уколов, так в чем ошибка то?

Можете подсказать почему не запускается?

а почему тогда вот это появляется при запуске?

Можете подсказать почему не запускается?

Transaction.sign (C:\Users\ooobi_000\Desktop\Мой блокчейн\palihchain.js:129:30)
at Object. (C:\Users\ooobi_000\Desktop\Мой блокчейн\palihchain.js:152:13)
at Module._compile (node:internal/modules/cjs/loader:1109:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
at Module.load (node:internal/modules/cjs/loader:989:32)
at Function.Module._load (node:internal/modules/cjs/loader:829:14)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
at node:internal/main/run_main_module:17:47