Contract 0x0DeF844ED26409C5C46dda124ec28fb064D90D27

Txn Hash Method
Block
From
To
Value [Txn Fee]
0x0ca8bd95f19750871d41b9a337aca1a3d50448183d40153c647f9e323770c838Approve415439722022-06-28 14:35:071 day 50 mins ago0x3e620a92b95a5b993af1d04fbed17757628abfa6 IN  Coffin Finance: CoUSD Token0 FTM0.011849204169
0xcfd59a6ae00b228c86a2acdcbb14bfa96764b322365d5cb1c7009d50b97345b4Approve415437672022-06-28 14:31:031 day 54 mins ago0x3e620a92b95a5b993af1d04fbed17757628abfa6 IN  Coffin Finance: CoUSD Token0 FTM0.000364110129
0x1d00490bd81a1d624c600d39f74217bbda2a9713c48333454c9e8b0bbc0c3a2eApprove415399042022-06-28 13:19:491 day 2 hrs ago0x9964d84d42e2dc407804c6e2b9b816fe7ac1a7cf IN  Coffin Finance: CoUSD Token0 FTM0.000085502769
0x3f51a4adc7691f04420b8b9b723b0c8a2cb491be7e566535e48e8ea5e43880d3Approve415399022022-06-28 13:19:461 day 2 hrs ago0x9964d84d42e2dc407804c6e2b9b816fe7ac1a7cf IN  Coffin Finance: CoUSD Token0 FTM0.000085502769
0x018b7f6a1c2dfa44ed52575ea43f40d2e43fa4cd9ba0219104d990718257f035Approve415398972022-06-28 13:19:421 day 2 hrs ago0x9964d84d42e2dc407804c6e2b9b816fe7ac1a7cf IN  Coffin Finance: CoUSD Token0 FTM0.000135260846
0xc14954dbee30b5f13aba729a8969f695448c174d29a359088806e956f98392d9Approve414991302022-06-28 0:38:141 day 14 hrs ago0xfa848424c141c7095cf5e95cb86117ab621e692c IN  Coffin Finance: CoUSD Token0 FTM0.000999034355
0xd8f48da83a86e9306101f9beaf2f582a7bc9adb2177f607304f2d63507ffca34Approve414729182022-06-27 16:36:001 day 22 hrs ago0x3afc09ee7077bc69d307a2a9f961c6160213f7bc IN  Coffin Finance: CoUSD Token0 FTM0.000152957967
0x4267ac07ad8b450330dcc25e0b18957a3e7511926d00bab5f8aac8a7db992346Approve414671212022-06-27 14:49:122 days 36 mins ago0x934d96724147328d9b376d5d532c2455f31f089b IN  Coffin Finance: CoUSD Token0 FTM0.028530555991
0xdaffcd21e99e09d5fd461290a2b9a6c4e0498908e199653abe0dcce0f0cbc9d2Approve414668062022-06-27 14:42:502 days 42 mins ago0x934d96724147328d9b376d5d532c2455f31f089b IN  Coffin Finance: CoUSD Token0 FTM0.00010477738
0xfe19c4f96456c0e4a361f913fe6559862e470662c89ecdbcab13970b4fef06a8Approve414667522022-06-27 14:41:522 days 43 mins ago0x934d96724147328d9b376d5d532c2455f31f089b IN  Coffin Finance: CoUSD Token0 FTM0.000180068096
0xe1c0ea5b3e9d0a60530da6d83c2fcf73c8a899202f71af0f711b39e90cb4e4fdApprove414664152022-06-27 14:35:362 days 50 mins ago0x934d96724147328d9b376d5d532c2455f31f089b IN  Coffin Finance: CoUSD Token0 FTM0.000184586401
0x66dc7fd302d706745491a2a3a8d8d056e0212463a6e34f2ef14e5c03f5433135Transfer414663412022-06-27 14:34:042 days 51 mins ago0xdd83eaa1a66369ab09b2642a1a130287c4ad8e40 IN  Coffin Finance: CoUSD Token0 FTM0.0002469
0x2ac5a98b8b24a9cfddbc34c60d21f57ecc397b4b768f5f55618d9c7349989b46Approve414661252022-06-27 14:30:342 days 55 mins ago0x466596a31b2893ba0498c0d72f70fb9477dfd3c4 IN  Coffin Finance: CoUSD Token0 FTM0.000125454374
0x89d1dda3989452e3514a487aad55139fefac5e744d5f5d95a6fd3971b63905c8Approve414660732022-06-27 14:29:432 days 55 mins ago0xdd83eaa1a66369ab09b2642a1a130287c4ad8e40 IN  Coffin Finance: CoUSD Token0 FTM0.000153655
0x81d5b20434d48bab2b383c812a477a420d78b437a9c14c24836454be9a80b684Approve414649952022-06-27 14:10:462 days 1 hr ago0x466596a31b2893ba0498c0d72f70fb9477dfd3c4 IN  Coffin Finance: CoUSD Token0 FTM0.000242180949
0xc8ed98b816b22c1cbc0de710bb213a2acc9c55110ccf9664659ef1ece4d34375Approve414646192022-06-27 14:02:532 days 1 hr ago0xdd83eaa1a66369ab09b2642a1a130287c4ad8e40 IN  Coffin Finance: CoUSD Token0 FTM0.000291888
0x4036d1d8283769ada868cefc7c12a1dc13678385858ad6a1f62fc73b9b4626bcTransfer414637832022-06-27 13:44:222 days 1 hr ago0xdd83eaa1a66369ab09b2642a1a130287c4ad8e40 IN  Coffin Finance: CoUSD Token0 FTM0.000162462
0xadc8a1bb1637016a9c8f3519379c2516cba59c39837f8c6bd59cd0db87c6049cApprove414586232022-06-27 12:09:492 days 3 hrs ago0xe162a103702c767bc28d2e779cae9ce430d68a29 IN  Coffin Finance: CoUSD Token0 FTM0.031304775946
0x1550e9093c625fbb3f457e35301dd30d5f2ed81d993ac9841fdb314428636359Approve414561642022-06-27 11:19:182 days 4 hrs ago0x88718e72bdf52992819db0036f916eadfeccace0 IN  Coffin Finance: CoUSD Token0 FTM0.000199894243
0x28f0c6bd9346ca0d0abe4874192a1e722bf0b45987e2827e2694658fe10d80fdApprove414555832022-06-27 11:05:512 days 4 hrs ago0x9964d84d42e2dc407804c6e2b9b816fe7ac1a7cf IN  Coffin Finance: CoUSD Token0 FTM0.113847407464
0x618f954b1eaaf158db44fdb8885d46cea9342d05fe6588ab0c6148d7d27b8283Approve414546942022-06-27 10:42:512 days 4 hrs ago0x564307c83ec95a0e5b06cc228a2fd28c4b75040f IN  Coffin Finance: CoUSD Token0 FTM0.000064501481
0x5c8915507c49b4b4a70922533a9a27bee5785236b8aeabc3f7d44015c61ee44eApprove414482572022-06-27 8:48:322 days 6 hrs ago0x72e5d8d85db805c275561d9fce16c11002c676fe IN  Coffin Finance: CoUSD Token0 FTM0.002654475
0x14254d80873942b78c2229b54d6c3f9d45b571b0a7042c287b1fdd9a34a06cf8Approve414462872022-06-27 8:12:142 days 7 hrs ago0x72e5d8d85db805c275561d9fce16c11002c676fe IN  Coffin Finance: CoUSD Token0 FTM0.000222992
0x99efde8472947ef8130ffe7a49c71949e02d64785c76cc502682fdd65af98fd1Approve414302722022-06-27 3:23:062 days 12 hrs ago0x4b7292679d439ccd83b972a5ff848b47391affca IN  Coffin Finance: CoUSD Token0 FTM0.000077665829
0x85c7cef9e2f8ba3b395452ea98240109931ab87d8a5af3ffe8c8f3242498c8adApprove414297372022-06-27 3:12:512 days 12 hrs ago0x4b7292679d439ccd83b972a5ff848b47391affca IN  Coffin Finance: CoUSD Token0 FTM0.00011525949
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OVERVIEW

Decentralized and capital-efficient partially collateralized stablecoin protocol on Fantom Opera!

Latest 1 internal transaction
Parent Txn Hash Block From To Value
0x7401d7a61821df029bc338f9e79b88c62fd9fd5fa44980debb77e0f322a54ee2183122572021-10-04 20:40:52267 days 18 hrs ago Coffin Finance: Deployer  Contract Creation0 FTM
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Contract Source Code Verified (Exact Match)

Contract Name:
Dollar

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
Yes with 500 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 10 : Dollar.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "@openzeppelin/contracts/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "./PoolToken.sol";

contract Dollar is PoolToken, Initializable {
    using SafeMath for uint256;

    // uint256 public constant genesis_supply = 5000 ether; // for initial calculation.
    uint256 public constant genesis_supply = 10 ether; // for initial calculation.

    /* ========== Initialize ========== */
    // constructor() PoolToken("coUSD", "Coffin Dollar") {}
    // constructor() PoolToken("testDollar", "testDollar") {}
    constructor() PoolToken("CoffinDollar", "CoUSD") {}

    function init(address _gate) external initializer onlyOwner {
        // same with addPool
        coffin_pools_array.push(_gate);
        coffin_pools[_gate] = true;
        if (genesis_supply > 0) {
            _mint(msg.sender, genesis_supply);
        }
    }
}

File 2 of 10 : Initializable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}

File 3 of 10 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

File 4 of 10 : PoolToken.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";

contract PoolToken is ERC20Burnable , Ownable{
    using SafeMath for uint256;

    // The addresses in this array are added by the oracle and these contracts are able to mint coffin
    address[] public coffin_pools_array;

    // Mapping is also used for faster verification
    mapping(address => bool) public coffin_pools; 

    /* ========== MODIFIERS ========== */

    modifier onlyPools() {
        require(coffin_pools[msg.sender] == true, "Only coffin pools can call this function");
        _;
    }
    

    modifier onlyByOwnerOrPool() {
        require(
            msg.sender == owner()
            || coffin_pools[msg.sender] == true, 
            "You are not the owner, or a pool");
        _;
    }

    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /* ========== constructor ========== */
    constructor(string memory _name, string memory _symbol) ERC20(_name, _symbol) {}
    /* ========== view ========== */
    function poolLength() view public returns(uint256) {
        return coffin_pools_array.length;
    }

    /* ========== onlyPools ========== */

    // Used by pools when user redeems
    function pool_burn_from(address addr, uint256 amount) public onlyPools {
        super.burnFrom(addr, amount);
        emit Burned(addr, msg.sender, amount);
    }
    // This function is what other pools will call to mint new token 
    function pool_mint(address addr, uint256 amount) public onlyPools {
        super._mint(addr, amount);
        emit Minted(msg.sender, addr, amount);
    }

    /* ========== onlyOwner  ========== */

    // 
    function burnFrom(address addr, uint256 amount) public override onlyOwner {
        super.burnFrom(addr, amount);
        emit Minted(msg.sender, addr, amount);
    }
    
    // pools which can mint/burn 
    function addPool(address pool_address) public onlyOwner {
        require(pool_address != address(0), "Zero address detected");

        require(coffin_pools[pool_address] == false, "Address already exists");
        coffin_pools[pool_address] = true; 
        coffin_pools_array.push(pool_address);

        emit PoolAdded(pool_address);
    }

    // Remove a pool 
    function removePool(address pool_address) public onlyOwner {
        require(pool_address != address(0), "Zero address detected");
        require(coffin_pools[pool_address] == true, "Address nonexistant");
        
        // Delete from the mapping
        delete coffin_pools[pool_address];

        // 'Delete' from the array by setting the address to 0x0
        for (uint i = 0; i < coffin_pools_array.length; i++){ 
            if (coffin_pools_array[i] == pool_address) {
                coffin_pools_array[i] = address(0); // This will leave a null in the array and keep the indices the same
                break;
            }
        }

        emit PoolRemoved(pool_address);
    }

    /* ========== EVENTS ========== */


    event Burned(address indexed from, address indexed by, uint256 amount);
    event Minted(address indexed from, address indexed to, uint256 amount);
    event PoolAdded(address pool_address);
    event PoolRemoved(address pool_address);

}

File 5 of 10 : ERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        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);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

File 6 of 10 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 7 of 10 : ERC20Burnable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC20.sol";
import "../../../utils/Context.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        uint256 currentAllowance = allowance(account, _msgSender());
        require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
        unchecked {
            _approve(account, _msgSender(), currentAllowance - amount);
        }
        _burn(account, amount);
    }
}

File 8 of 10 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: 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
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 9 of 10 : IERC20Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

File 10 of 10 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 500
  },
  "metadata": {
    "bytecodeHash": "none",
    "useLiteralContent": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

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{"internalType":"address","name":"addr","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"pool_mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"pool_address","type":"address"}],"name":"removePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Validator ID :
0 FTM

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0

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Active
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Online
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0 s
Address Amount claimed Rewards Created On Epoch Created On
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