Address Contract Partially Verified
Address
0xe53940db3CE1cCC33375129b6E211b39221035E4
Balance
0 ETH
Nonce
1
Code Size
7294 bytes
Creator
0x055bcD37...89C3 at tx 0xbe36befc...05febd
Indexed Transactions
0
Contract Bytecode
7294 bytes
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Verified Source Code Partial Match
Compiler: v0.5.17+commit.d19bba13
EVM: istanbul
Optimization: No
Xearn.sol 240 lines
pragma solidity ^0.5.17;
/**
********************************************************************
*
********************************************************************
*
*
********************************************************************
*/
interface IERC20 {
function totalSupply() external view returns (uint);
function balanceOf(address account) external view returns (uint);
function transfer(address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint amount) external returns (bool);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
contract Context {
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
}
contract ERC20 is Context, IERC20 {
using SafeMath for uint;
mapping (address => uint) private _balances;
mapping (address => mapping (address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns (uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns (uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns (uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint addedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
function _approve(address owner, address spender, uint amount) internal {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor (string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
}
library SafeMath {
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b <= a, errorMessage);
uint c = a - b;
return c;
}
function mul(uint a, uint b) internal pure returns (uint) {
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint c = a / b;
return c;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 0x0 && codehash != accountHash);
}
}
library SafeERC20 {
using SafeMath for uint;
using Address for address;
function safeTransfer(IERC20 token, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint value) internal {
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function callOptionalReturn(IERC20 token, bytes memory data) private {
require(address(token).isContract(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
contract Xearn is ERC20, ERC20Detailed {
using SafeERC20 for IERC20;
using Address for address;
using SafeMath for uint;
address public governance;
mapping (address => bool) public minters;
constructor () public ERC20Detailed("xEarn Capital", "XRN", 18) {
governance = tx.origin;
}
function mint(address account, uint256 amount) public {
require(minters[msg.sender], "!minter");
_mint(account, amount);
}
function burn(address account, uint256 amount) public {
require(minters[msg.sender], "!minter");
_burn(account, amount);
}
function setGovernance(address _governance) public {
require(msg.sender == governance, "!governance");
governance = _governance;
}
function addMinter(address _minter) public {
require(msg.sender == governance, "!governance");
minters[_minter] = true;
}
function removeMinter(address _minter) public {
require(msg.sender == governance, "!governance");
minters[_minter] = false;
}
}
Read Contract
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint8
governance 0x5aa6e675 → address
minters 0xf46eccc4 → bool
name 0x06fdde03 → string
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256
Write Contract 10 functions
These functions modify contract state and require a wallet transaction to execute.
addMinter 0x983b2d56
address _minter
approve 0x095ea7b3
address spender
uint256 amount
returns: bool
burn 0x9dc29fac
address account
uint256 amount
decreaseAllowance 0xa457c2d7
address spender
uint256 subtractedValue
returns: bool
increaseAllowance 0x39509351
address spender
uint256 addedValue
returns: bool
mint 0x40c10f19
address account
uint256 amount
removeMinter 0x3092afd5
address _minter
setGovernance 0xab033ea9
address _governance
transfer 0xa9059cbb
address recipient
uint256 amount
returns: bool
transferFrom 0x23b872dd
address sender
address recipient
uint256 amount
returns: bool
Recent Transactions
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