Optional Items

Token Name

string public constant name = “TRONEuropeRewardCoin”;

Token Abbreviation

string public constant symbol = “TERC”;

Token Precision

uint8 public constant decimals = 6;

Required Items

contract TRC20 {
              function totalSupply() constant returns (uint theTotalSupply);
              function balanceOf(address _owner) constant returns (uint balance);
              function transfer(address _to, uint _value) returns (bool success);
              function transferFrom(address _from, address _to, uint _value) returns (bool success);
              function approve(address _spender, uint _value) returns (bool success);
              function allowance(address _owner, address _spender) constant returns (uint remaining);
             event Transfer(address indexed _from, address indexed _to, uint _value);
             event Approval(address indexed _owner, address indexed _spender, uint _value);
}

totalSupply()
This function returns the total supply of the token.

balanceOf()
This function returns the token balance of the specific account.

transfer()
This function is used to transfer an amount of tokens from the smart contract to a specific address.

approve()
This function is used to authorize the third party (like a DAPP smart contract) to transfer token from the token owner’s account.

transferFrom()
This function is used to allow the third party to transfer token from an owner account to a receiver account. The owner account must be approved to be called by the third party.

allowance()
This function is used to query the remaining amount of tokens the third party can transfer.

Event Functions

When token is successfully transferred, it has to trigger Transfer Event.

event Transfer(address indexed _from, address indexed _to, uint256 _value)

When approval() is successfully called, it has to trigger Approval Event.

event Approval(address indexed _owner, address indexed _spender, uint256 _value)