Token standards
With the advent of smart contract platforms such as Ethereum, it has become quite easy to create a token using a smart contract. Technically, a token or digital currency can be created on Ethereum with a few lines of code, as shown in the following example:
pragma solidity ^0.8.0;
contract token {
mapping (address => uint) public coinBalanceOf;
event CoinTransfer(address sender, address receiver, uint amount);
/* Initializes contract with initial supply tokens to the creator of the contract */
function tokenx(uint supply) public {
supply = 1000;
coinBalanceOf[msg.sender] = supply;
}
/* Very simple trade function */
function sendCoin(address receiver, uint amount) public returns(bool sufficient) {
if (coinBalanceOf[msg.sender] < amount) return false;
coinBalanceOf[msg.sender] -= amount;
coinBalanceOf[receiver] += amount;
emit CoinTransfer(msg.sender, receiver, amount);
return...