Address Contract Partially Verified
Address
0xAA19961b6B858D9F18a115f25aa1D98ABc1fdBA8
Balance
0 ETH
Nonce
1
Code Size
10888 bytes
Creator
0x7DA5D2FB...dA83 at tx 0x10400f1a...03bc8c
Indexed Transactions
0
Contract Bytecode
10888 bytes
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Verified Source Code Partial Match
Compiler: v0.4.19+commit.c4cbbb05
Optimization: No
LCS.sol 328 lines
/*
* LocalCoinSwap Cryptoshare Source Code
* www.localcoinswap.com
*/
pragma solidity ^0.4.19;
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
}
contract BurnableToken is BasicToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint256 _value) public {
require(_value <= balances[msg.sender]);
// no need to require value <= totalSupply, since that would imply the
// sender's balance is greater than the totalSupply, which *should* be an assertion failure
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
Burn(burner, _value);
}
}
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
*/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
contract DerivativeTokenInterface {
function mint(address _to, uint256 _amount) public returns (bool);
}
contract LCS is StandardToken, BurnableToken, Ownable {
string public constant name = "LocalCoinSwap Cryptoshare";
string public constant symbol = "LCS";
uint256 public constant decimals = 18;
uint256 public constant initialSupply = 100000000 * (10 ** 18);
// Array of derivative token addresses
DerivativeTokenInterface[] public derivativeTokens;
bool public nextDerivativeTokenScheduled = false;
// Time until next token distribution
uint256 public nextDerivativeTokenTime;
// Next token to be distrubuted
DerivativeTokenInterface public nextDerivativeToken;
// Index of last token claimed by LCS holder, required for holder to claim unclaimed tokens
mapping (address => uint256) lastDerivativeTokens;
function LCS() public {
totalSupply_ = initialSupply;
balances[msg.sender] = totalSupply_;
Transfer(0, msg.sender, totalSupply_);
}
// Event for token distribution
event DistributeDerivativeTokens(address indexed to, uint256 number, uint256 amount);
// Modifier to handle token distribution
modifier handleDerivativeTokens(address from) {
if (nextDerivativeTokenScheduled && now > nextDerivativeTokenTime) {
derivativeTokens.push(nextDerivativeToken);
nextDerivativeTokenScheduled = false;
delete nextDerivativeTokenTime;
delete nextDerivativeToken;
}
for (uint256 i = lastDerivativeTokens[from]; i < derivativeTokens.length; i++) {
// Since tokens haven't redeemed yet, mint new ones and send them to LCS holder
derivativeTokens[i].mint(from, balances[from]);
DistributeDerivativeTokens(from, i, balances[from]);
}
lastDerivativeTokens[from] = derivativeTokens.length;
_;
}
// Claim unclaimed derivative tokens
function claimDerivativeTokens() public handleDerivativeTokens(msg.sender) returns (bool) {
return true;
}
// Set the address and release time of the next token distribution
function scheduleNewDerivativeToken(address _address, uint256 _time) public onlyOwner returns (bool) {
require(!nextDerivativeTokenScheduled);
nextDerivativeTokenScheduled = true;
nextDerivativeTokenTime = _time;
nextDerivativeToken = DerivativeTokenInterface(_address);
return true;
}
// Make sure derivative tokens are handled for the _from and _to addresses
function transferFrom(address _from, address _to, uint256 _value) public handleDerivativeTokens(_from) handleDerivativeTokens(_to) returns (bool) {
return super.transferFrom(_from, _to, _value);
}
// Make sure derivative tokens are handled for the msg.sender and _to addresses
function transfer(address _to, uint256 _value) public handleDerivativeTokens(msg.sender) handleDerivativeTokens(_to) returns (bool) {
return super.transfer(_to, _value);
}
}
Read Contract
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint256
derivativeTokens 0x59793b3a → address
initialSupply 0x378dc3dc → uint256
name 0x06fdde03 → string
nextDerivativeToken 0x241d1108 → address
nextDerivativeTokenScheduled 0x5d7a6b10 → bool
nextDerivativeTokenTime 0x1b841fea → uint256
owner 0x8da5cb5b → address
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256
Write Contract 9 functions
These functions modify contract state and require a wallet transaction to execute.
approve 0x095ea7b3
address _spender
uint256 _value
returns: bool
burn 0x42966c68
uint256 _value
claimDerivativeTokens 0x7097048a
No parameters
returns: bool
decreaseApproval 0x66188463
address _spender
uint256 _subtractedValue
returns: bool
increaseApproval 0xd73dd623
address _spender
uint256 _addedValue
returns: bool
scheduleNewDerivativeToken 0x74bde311
address _address
uint256 _time
returns: bool
transfer 0xa9059cbb
address _to
uint256 _value
returns: bool
transferFrom 0x23b872dd
address _from
address _to
uint256 _value
returns: bool
transferOwnership 0xf2fde38b
address newOwner
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