GCN20 Token

A GCN20 token must implement the interface IGCN20 in IGCN20.sol. This is a template contract GCN20Token.template. Users just need to fill in _name, _symbol, _decimals and _totalSupply according to their own requirements:

  constructor() public {
    _name = {{TOKEN_NAME}};
    _symbol = {{TOKEN_SYMBOL}};
    _decimals = {{DECIMALS}};
    _totalSupply = {{TOTAL_SUPPLY}};
    _balances[msg.sender] = _totalSupply;

    emit Transfer(address(0), msg.sender, _totalSupply);
  }

Then users can use Remix IDE and Metamask to compile and deploy the GCN20 contract to Ace Blockchain Crypto Network .

Interact with Contract with Web3 and NodeJS.

Connect to GREAT CRYPTO NETWORK (GCN))'s public RPC endpoint

const Web3 = require('web3');
// mainnet
const web3 = new Web3('https://mainnet-rpc.gcnscan.com');

// testnet
const web3 = new Web3('https://testnet-rpc.gcnscan.com');

Create a wallet

web3.eth.accounts.create([entropy]);

web3.eth.accounts.create();
{
  address: '0x926605D0729a968266f1BB299d8Df0471C4F5367',
  privateKey: '0x6b4618539d95f205f33e916e89404b301dde545c0c4acc181fd0c0b42708bad3',
  signTransaction: [Function: signTransaction],
  sign: [Function: sign],
  encrypt: [Function: encrypt]
}

Recover a wallet

const account = web3.eth.accounts.privateKeyToAccount("0xe500f5754d761d74c3eb6c2566f4c568b81379bf5ce9c1ecd475d40efe23c577")

Check balance

web3.eth.getBalance(holder).then(console.log);

Output:

The balance will be bumped by e18 for GREAT CRYPTO NETWORK .

6249621999900000000

Create transaction

Parameters

• Object - The transaction object to send:
• from - String|Number: The address for the sending account. Uses the web3.eth.defaultAccount property, if not specified. Or an address or index of a local wallet in web3.eth.accounts.wallet.
• to - String: (optional) The destination address of the message, left undefined for a contract-creation transaction.
• value - Number|String|BN|BigNumber: (optional) The value transferred for the transaction in wei, also the endowment if it’s a contract-creation transaction.
• gas - Number: (optional, default: To-Be-Determined) The amount of gas to use for the transaction (unused gas is refunded).
• gasPrice - Number|String|BN|BigNumber: (optional) The price of gas for this transaction in wei, defaults to web3.eth.gasPrice.
• data - String: (optional) Either a ABI byte string containing the data of the function call on a contract, or in the case of a contract-creation transaction the initialisation code.
• nonce - Number: (optional) Integer of a nonce. This allows to overwrite your own pending transactions that use the same nonce.

    // // Make a transaction using the promise
    web3.eth.sendTransaction({
        from: holder,
        to: '0x0B75fbeB0BC7CC0e9F9880f78a245046eCBDBB0D',
        value: '1000000000000000000',
        gas: 5000000,
        gasPrice: 18e9,
    }, function(err, transactionHash) {
      if (err) {
        console.log(err);
        } else {
        console.log(transactionHash);
       }
    });