ERC20
This contract is an ERC20 token.
Name
BTOCoin
Symbol
BTO
Decimals
18
Total Supply
1,000,000,000 BTO
About
Stats
Public Functions
5
Event Types
2
Code Size
6,316 bytes
Functions
balanceOf keyboard_arrow_up
transfer keyboard_arrow_up
Modifiers help
onlyPayloadSize checks for the following:
Source Code
function transfer(address _to, uint256 _value)
onlyPayloadSize(2 * 32)
returns (bool)
{
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
allowance keyboard_arrow_up
transferFrom keyboard_arrow_up
Modifiers help
onlyPayloadSize checks for the following:
Source Code
function transferFrom(
address _from,
address _to,
uint256 _value
) onlyPayloadSize(3 * 32) returns (bool) {
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// if (_value > _allowance) throw;
balances[_to] = balances[_to].add(_value);
balances[_from] = balances[_from].sub(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
approve keyboard_arrow_up
Requirements help
One or more of the following:
Source Code
function approve(address _spender, uint256 _value) returns (bool) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
if ((_value != 0) && (allowed[msg.sender][_spender] != 0)) throw;
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
Internal Functions
Internal functions are parts of the contract that can't be used directly, but instead are used by the public functions listed above.