FNCY 2.0 (ENG)

BEP20 Token

A BEP20 token must implement the interface IBEP20 in IBEP20.sol. This is a template contract BEP20Token.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 BEP20 contract to BSC.

Interact with Contract with Web3 and NodeJS.

Connect to Binance Smart Chain's public RPC endpoint

const Web3 = require('web3');

// testnet
const web3 = new Web3('https://fncy-seed1.fncy.world');

Create a wallet

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

Output:

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")

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);
       }
    });

Issue BEP20 Tokens

In this section, we provide a brief step-by-step guide on how to issue BEP20 tokens on the FNCY network.

Compile and Deploy BEP20 Contract

1) Open Remix IDE: https://remix.ethereum.org

2) Create new contract BEP20Token.sol and copy contract code from the BEP20 token template here

3) Modify “name”, “symbol”, “decimals” and “totalSupply” according to your requirements.

5) Compile the BEP20 token contract

6) Deploy the contract to FNCY Testnet

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