ERC20
This contract is an ERC20 token.
Name
SPANK
Symbol
SPANK
Decimals
18
Total Supply
1,000,000,000 SPANK
About
link
description
SpankChain (SPANK) is a cryptocurrency token and operates on the Ethereum platform. SpankChain has a current supply of 1,000,000,000 with 300,043,386 in circulation. The last known price of SpankChain is $0.008522 USD and is down -16.57% over the last 24 hours. It is currently trading on 6 active market(s) with $34.06 traded over the last 24 hours. More information can be found at https://spankchain.com/.
Stats
Public Functions
6
Event Types
2
Code Size
7,711 bytes
Events (2) keyboard_arrow_up
Functions
balanceOf keyboard_arrow_up
transfer keyboard_arrow_up
Requirements help
Source Code
function transfer(address _to, uint256 _value) returns (bool success) {
//Default assumes totalSupply can't be over max (2^256 - 1).
//If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap.
//Replace the if with this one instead.
//require(balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]);
require(balances[msg.sender] >= _value);
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
}transferFrom keyboard_arrow_up
Requirements help
Source Code
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
//same as above. Replace this line with the following if you want to protect against wrapping uints.
//require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]);
require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value);
balances[_to] += _value;
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
}approve keyboard_arrow_up
Source Code
function approve(address _spender, uint256 _value) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}allowance keyboard_arrow_up
approveAndCall keyboard_arrow_up
Source Code
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
require(_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData));
return true;
}
