Contract 0x0DeF844ED26409C5C46dda124ec28fb064D90D27

 

Contract Overview

Coffin Finance: CoUSD Token
Balance:
0 FTM

FTM Value:
$0.00
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x786ddf90595daef843e0aa96644cdc054735f72971ec675cb0a5ff112cad0f6aApprove542088142023-01-22 14:07:337 days 7 hrs ago0x46412d9c73d74d3ac9238c12035e052ee83e879c IN  Coffin Finance: CoUSD Token0 FTM0.004608888739
0x7e6b8cfb9a2f8f4fb08a0f62f308cdc91f9a5e0e3420e63215cc103e3860b1d0Transfer528869932022-12-26 13:04:1034 days 8 hrs ago0x8937e6c0da91e0576cdb7915fce4ae5fc73e953e IN  Coffin Finance: CoUSD Token0 FTM0.000838142215
0x53dfb69eb615dceb672b11532253d9d459433f5709d96e458ff4f13845be6851Transfer528861222022-12-26 12:32:4834 days 9 hrs ago0xcf329b0db84829bd7c0ded5a13181c32755b10b2 IN  Coffin Finance: CoUSD Token0 FTM0.000833625317
0x519bbfeb0d8a3b3d7a818abbd37f70aad4ea623f6a8e07456bd4a8a7e390e3ddApprove527713532022-12-24 1:08:4236 days 20 hrs ago0x921aac4adb0b2994e6b9967e11fca69b36703e41 IN  Coffin Finance: CoUSD Token0 FTM0.001279673787
0xacf55331d0c3eabd8d4183c9685b23f282b1022436bde329a8ee81b086184bc0Approve525638912022-12-20 2:13:1340 days 19 hrs ago0x79785b784d43e2fcc6a675728b5052b8e4c4c7f0 IN  Coffin Finance: CoUSD Token0 FTM0.001094142189
0x10f5298145c71bf777876a3d0dd72004237de0d6285b9061b0285cce80ed5ea6Approve522999112022-12-13 23:28:5746 days 22 hrs ago0xaf7f83f806a6ed7e82a06451d225749a75292ed0 IN  Coffin Finance: CoUSD Token0 FTM0.000350318622
0xeeca0cf97d6eb2db7b3f60a21ec59c25ae9caa9177f3df9bcd3030b2a6508ac9Approve521654742022-12-11 15:05:4749 days 6 hrs ago0xa5e9efe36d872e70a252214ae6f8185bc2623d15 IN  Coffin Finance: CoUSD Token0 FTM0.000450480508
0x92bf187be4d5ecd7d97d7ee28c24f8b68267cd4e62e671376152090dd7e456a7Approve521653712022-12-11 15:01:5749 days 6 hrs ago0xa5e9efe36d872e70a252214ae6f8185bc2623d15 IN  Coffin Finance: CoUSD Token0 FTM0.002538423021
0x1ac70db18d270a4c89c3471d2bc9896707783c34113d038ca1c53a8abc3fbee7Approve521166682022-12-10 16:00:2350 days 5 hrs ago0xb8be57502ff91cc20bf172fa2ddeef8de117ed59 IN  Coffin Finance: CoUSD Token0 FTM0.001193799859
0x4fb3634384a35cfb40a242abce5dbfaa2c23fc6cb0e994d8abdda34a4189a023Approve521149212022-12-10 15:02:3050 days 6 hrs ago0xc77ad70068a5924b9e0014a5b815a65bab5b5c43 IN  Coffin Finance: CoUSD Token0 FTM0.000820881158
0x22a8f9f41646a462d202d330e1496221682c051a33cd0ebdfe7ff7493cd0507dApprove521140492022-12-10 14:30:4550 days 7 hrs ago0x8c6b74e7f405194a47cf321e0a2ac475709a7fa8 IN  Coffin Finance: CoUSD Token0 FTM0.000659057112
0xccc0937dcbd2f6dfc12e839bce8741ec603684376ae147becfb5e4c7b54f6adaApprove520907192022-12-10 2:25:3750 days 19 hrs ago0x4f04b64e9a9ec5acdbade3ff772bc4b02deda27a IN  Coffin Finance: CoUSD Token0 FTM0.002177226
0x11d1d2b19e1d7a21d57adf16b4aeffdbd9d417aa478446bf4dd9fc6d47cc2b3cApprove517005312022-12-01 6:23:0559 days 15 hrs ago0x983cd18ed6d501e6e01285f2a06df0767fb7297f IN  Coffin Finance: CoUSD Token0 FTM0.00244818
0x88893bc8f00f0dad8ff2c237a8c448c0188a2a565d31bc95ee53925965f2e581Approve516703622022-11-30 14:11:5560 days 7 hrs ago0x1b20813c0d22f0d366aa93b5567a048035487af7 IN  Coffin Finance: CoUSD Token0 FTM0.001094771038
0x87f5e1ee319f30db6790cc3bedb297581abf9dcf2a284f239f91d84b8eb6a0ccApprove515791272022-11-29 2:36:0561 days 19 hrs ago0xdaadb84720559c8e885f6d7556bbcbbd0a72a588 IN  Coffin Finance: CoUSD Token0 FTM0.0033981882
0x5b202e9c0533fc8f0c2e7a7ee51c74d3b132a2cf9c00e9b2c28d82ee118370b7Approve515644672022-11-28 18:35:3562 days 3 hrs ago0x933129fda3c5f9deddf5e3a58cc3836898d1d6f4 IN  Coffin Finance: CoUSD Token0 FTM0.00159801978
0x09bf88584e3b99646b4790894651af44289bee4bcaa6c971e67fd66db1193afbApprove515644642022-11-28 18:35:2662 days 3 hrs ago0x933129fda3c5f9deddf5e3a58cc3836898d1d6f4 IN  Coffin Finance: CoUSD Token0 FTM0.001456258012
0x88e62fb7c3ca4e8a5f986fa48a9a6cea607090e492033fce135b46464d770606Approve515644582022-11-28 18:35:1062 days 3 hrs ago0x933129fda3c5f9deddf5e3a58cc3836898d1d6f4 IN  Coffin Finance: CoUSD Token0 FTM0.001456258012
0xcd546d0c3c8efe2ff12cdb6842cab1fd4cca47aef2469946723bfcf75c2785edApprove512305062022-11-21 8:43:0069 days 12 hrs ago0x87fc1313880d579039ac48db8b25428ed5f33c4a IN  Coffin Finance: CoUSD Token0 FTM0.039461071328
0x8b1827defdca722c4d6ad6dc4811e5a3703543b51b4f755d7f6d06d79b0b0180Approve510365822022-11-17 17:31:2973 days 4 hrs ago0xdd72aa01bbffbade64766018c406af7558f025ff IN  Coffin Finance: CoUSD Token0 FTM0.00212970483
0xe892a6cb9dde9858c0856fd875bf8982451f7417d03241f9879a2e2f1ff2850bApprove506211942022-11-08 15:39:3282 days 5 hrs ago0x80fbf1ad5353e0bc3924f8313847767674e6323f IN  Coffin Finance: CoUSD Token0 FTM0.021454337713
0x45b3777a0064593fe1a6b7369afeaac02608b5d47b2f5dbfaf6b8782cfb5ee31Approve502193602022-10-29 11:18:3092 days 10 hrs ago0x9971d1f0f2ccc3dc3dbe2a31a4f2dcb4fa336194 IN  Coffin Finance: CoUSD Token0 FTM0.00009359
0x3e341157e1e1002d054864cab28aff2940826c927b2460a44ed118a17250d4d3Approve495684842022-10-19 23:04:07101 days 22 hrs ago0x5bc0aa095632c76da0be9838d960da9a66fca30e IN  Coffin Finance: CoUSD Token0 FTM0.000042050256
0x10e5c8d1f7736b7a04f50d54d0abc22ed322e91bd1af97930fc5f964c456a3e3Approve495023132022-10-19 3:26:51102 days 18 hrs ago0x835f394f3d770b6ff818303f045e39f541b3d781 IN  Coffin Finance: CoUSD Token0 FTM0.000118471758
0x817599f2bef7a9791bfdb49cb87fd25e0276985b9a086d45909b8ac4a195bffcApprove494022532022-10-17 20:05:35104 days 1 hr ago0x3673019b86b0f0199532577f2466ccda61631221 IN  Coffin Finance: CoUSD Token0 FTM0.000126130151
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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 20:40:52482 days 57 mins 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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