Contract 0xc151c3094a3621bd779827e74c2d3222281a6224

 
Txn Hash Method
Block
From
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Value [Txn Fee]
0x795c5cf20c93d7e81ea87a76361504a025db82ae2e4ba64c773eb12f07de35c0Withdraw397451392022-06-04 6:07:22115 days 11 hrs ago0xe2e23c12e3f15471c4e5f4c4e1b87cf6672e5ca5 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.000656115016
0x1893019ca0a37424f507f5bc35719b589b0b7480a0da964b634a4597b47563faStake378252852022-05-08 9:47:26142 days 7 hrs ago0xfa7497ac448978d91d27dca5c7b392a7ada2c8c5 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.018098741743
0xcd91ce84572502195783c76955d154b8cbac186bd13e193523d97facdf31d0e2Withdraw367585392022-04-23 6:04:19157 days 11 hrs ago0x2a1d82f5242064330bac450c2305cb1d6cb6e2b2 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.013234627202
0x1fbd1ac8136496818c31fa4d3b2b6a440e9dc73ac03dcd8992d99db7d3e76d94Stake366795472022-04-22 6:15:39158 days 11 hrs ago0x2a1d82f5242064330bac450c2305cb1d6cb6e2b2 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.022350457704
0x2043dbd8b1639530bccb8a8b2c52292677965be86aadd438d8a7e7d36dfa4b4cStake366428952022-04-21 19:31:45158 days 22 hrs ago0xfa7497ac448978d91d27dca5c7b392a7ada2c8c5 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.054135845209
0x616e9a91b529ff0df10e3ce35a212f9732246956eca0d7097a2da65b8d3b0940Exit366286402022-04-21 15:06:23159 days 2 hrs ago0x4252f0abf02f6b58949aecda2f60cf9b7e9721c0 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.030132418404
0x6189789c41cbc8a207be161f9b7591f8bc554a5f111808525234842359faef19Stake365131482022-04-20 6:44:23160 days 10 hrs ago0x4252f0abf02f6b58949aecda2f60cf9b7e9721c0 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.032271319326
0x3d7ee1639f55c87e4bdaf4583b3b8fc670ef924ad41fbc820ae3e64d95b33d75Withdraw357081252022-04-10 10:21:14170 days 7 hrs ago0x4252f0abf02f6b58949aecda2f60cf9b7e9721c0 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.013448106337
0x77380c60a0d13c57964d209ee41b645269173428e350a014e795fe147e0f87b5Withdraw354243142022-04-07 2:07:23173 days 15 hrs ago0x134b967a77e4c7150f4ac9083d89c6281fafaa3c IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.025235068953
0x5b08695d88902b2dd8ab91714f685fc7b2748b056554dfb039cd085435bb4a81Stake353536192022-04-06 5:02:56174 days 12 hrs ago0x134b967a77e4c7150f4ac9083d89c6281fafaa3c IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.018528194227
0x3005ee53e4b73e3d0cd5e0160717897d471790efea641438ae44774a0c7c548dStake353535552022-04-06 5:01:43174 days 12 hrs ago0x134b967a77e4c7150f4ac9083d89c6281fafaa3c IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.026361377642
0x1938fd1d43e0bfe653fb887308eed2362b7bdc5f35c119e09fc2006b8d2659a9Withdraw352867562022-04-05 9:33:57175 days 7 hrs ago0x3fdad4d08d11f3acc3d654ff204631ffebe8a946 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.0376886647
0x426fd1f0a6a8d0faf8ce807b4bc432c2475c3e85209414d3dc835a97ab598f3fStake351352042022-04-03 14:58:06177 days 2 hrs ago0x4252f0abf02f6b58949aecda2f60cf9b7e9721c0 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.031477606028
0xfa3e9c4a17a1bf32db7d02f802ff88a4fa9a49e9aaf08acf60f847140e4510b1Withdraw348299782022-03-30 22:29:23180 days 19 hrs ago0x4252f0abf02f6b58949aecda2f60cf9b7e9721c0 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.026080299327
0xc950d604439bcb2b1d6be829684cd07d7b9c53c95c6fce21f3860f2090d616feStake347953302022-03-30 12:43:38181 days 4 hrs ago0xe2e23c12e3f15471c4e5f4c4e1b87cf6672e5ca5 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.03754527751
0xc4bfb1688165a444c0580fd66b53305c40c3364c50739fefef976aba7fb543e7Stake345707882022-03-27 23:15:35183 days 18 hrs ago0x1e2cc37406f868b3d481170248e8ab2fb0181644 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.039559095147
0xfa5bbe7af3f3f8f5b715a30dce31571f3e8f12af551e32983e98f55192fe7a0bExit344738042022-03-26 20:26:44184 days 21 hrs ago0x1e2cc37406f868b3d481170248e8ab2fb0181644 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.023319734494
0xa5bac900d4cdc4b2319ad690b7cbef9517578348c1910825a51bd2466618c1c8Stake344666252022-03-26 18:22:44184 days 23 hrs ago0x63785c32c4d77a139f9d2cb3ec703de36ff7434a IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.031097230591
0xd8c3326666d27e30b6a3ddd82798b39dbb70eb58bda55d8285a2293abc04ef47Stake344011572022-03-25 23:58:32185 days 17 hrs ago0x1e2cc37406f868b3d481170248e8ab2fb0181644 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.029899724715
0xf95e610244e6b793742ee9c548af59dbe6252396e589fcef06027f8448bf1d94Exit342992292022-03-24 19:04:48186 days 22 hrs ago0xff7da03a836e8b56fa2fe5430a14d1c7d364dde3 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.048093230348
0x4444c164db8faebb6d419f3f9d50e6e8627798fba752261eb200c3ca92334079Withdraw342564612022-03-24 6:25:43187 days 11 hrs ago0x83f905b926514d7d6f5f833450cc48e804f7ff2d IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.048804120343
0xe691edcf42ce4ee98b91b124c09d64e531872d8bb90ec46eb892fbc86e56aa70Withdraw342417472022-03-24 2:19:21187 days 15 hrs ago0x5188fcc1c68aa505fe5c44fdc9476b8ebb1a3a2b IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.067684067316
0x15c60b133733e41b5953ecf171d6aba12595e3474c19efee48fca10c974180afStake342333202022-03-23 23:38:55187 days 17 hrs ago0x1e2cc37406f868b3d481170248e8ab2fb0181644 IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.025313161166
0xc05b373357b2a6ae31760b2b46abfde91c4c98da0956873bceaf2b524291173fWithdraw342293032022-03-23 22:32:57187 days 19 hrs ago0xdaf399baaf8abfa2f307c73bf498437c4da1109e IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.020104939506
0xeccdf2f682cc7e12fa25d2a2e7b84fc5c2bea67b40b83024afe73dc3ec83ad7eStake342214302022-03-23 20:28:26187 days 21 hrs ago0xb52fe1f95ce398c59c40473c29714df695823aeb IN  0xc151c3094a3621bd779827e74c2d3222281a62240 FTM0.033647853229
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0x5544bde4d6b0ee4ba1a39bb6e6bc6958215ba6a42f47c1958a89ff067b1a5615332124042022-03-12 8:03:54199 days 9 hrs ago 0x3f7f2a0faa31a291a7b3470ac5c4dd6b8b060470  Contract Creation0 FTM
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xb13b6d27F2c04728658b8d09Bc76979c007f0247

Contract Name:
Masonry

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 8 : Masonry.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";

import "./utils/ContractGuard.sol";
import "./interfaces/IBasisAsset.sol";
import "./interfaces/ITreasury.sol";

contract ShareWrapper {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    IERC20 public share;

    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;

    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view returns (uint256) {
        return _balances[account];
    }

    function stake(uint256 amount) public virtual {
        _totalSupply = _totalSupply.add(amount);
        _balances[msg.sender] = _balances[msg.sender].add(amount);
        share.safeTransferFrom(msg.sender, address(this), amount);
    }

    // updates global state as well as the individual address' total
    function withdraw(uint256 amount) public virtual {
        uint256 masonShare = _balances[msg.sender];
        require(masonShare >= amount, "Masonry: withdraw request greater than staked amount");
        _totalSupply = _totalSupply.sub(amount);
        _balances[msg.sender] = masonShare.sub(amount);
        share.safeTransfer(msg.sender, amount);
    }
}

contract Masonry is ShareWrapper, ContractGuard {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    /* ========== DATA STRUCTURES ========== */

    struct Masonseat {
        uint256 lastSnapshotIndex;
        uint256 rewardEarned;
        uint256 epochTimerStart;
    }

    struct MasonrySnapshot {
        uint256 time;
        uint256 rewardReceived;
        uint256 rewardPerShare;
    }

    /* ========== STATE VARIABLES ========== */

    // governance
    address public operator;

    // flags
    bool public initialized = false;

    IERC20 public tomb;
    ITreasury public treasury;

    mapping(address => Masonseat) public masons;
    MasonrySnapshot[] public masonryHistory;

    uint256 public withdrawLockupEpochs;
    uint256 public rewardLockupEpochs;

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

    event Initialized(address indexed executor, uint256 at);
    event Staked(address indexed user, uint256 amount);
    event Withdrawn(address indexed user, uint256 amount);
    event RewardPaid(address indexed user, uint256 reward);
    event RewardAdded(address indexed user, uint256 reward);

    /* ========== Modifiers =============== */

    modifier onlyOperator() {
        require(operator == msg.sender, "Masonry: caller is not the operator");
        _;
    }

    modifier masonExists {
        require(balanceOf(msg.sender) > 0, "Masonry: The mason does not exist");
        _;
    }

    // handles updating an address' rewards in its Masonseat struct
    modifier updateReward(address mason) {
        if (mason != address(0)) {
            Masonseat memory seat = masons[mason];
            seat.rewardEarned = earned(mason);
            seat.lastSnapshotIndex = latestSnapshotIndex();
            masons[mason] = seat;
        }
        _;
    }

    modifier notInitialized {
        require(!initialized, "Masonry: already initialized");
        _;
    }

    /* ========== GOVERNANCE ========== */

    function initialize(
        IERC20 _tomb,
        IERC20 _share,
        ITreasury _treasury
    ) public notInitialized {
        tomb = _tomb;
        share = _share;
        treasury = _treasury;

        MasonrySnapshot memory genesisSnapshot = MasonrySnapshot({time : block.number, rewardReceived : 0, rewardPerShare : 0});
        masonryHistory.push(genesisSnapshot);

        // 1 epch = 6 hours
        withdrawLockupEpochs = 4; // Lock for 3 epochs (24h) before release withdraw
        rewardLockupEpochs = 2; // Lock for 1 epochs (12h) before release claimReward


        initialized = true;
        operator = msg.sender;
        emit Initialized(msg.sender, block.number);
    }

    function setOperator(address _operator) external onlyOperator {
        operator = _operator;
    }

    function setLockUp(uint256 _withdrawLockupEpochs, uint256 _rewardLockupEpochs) external onlyOperator {
        require(_withdrawLockupEpochs >= _rewardLockupEpochs && _withdrawLockupEpochs <= 56, "_withdrawLockupEpochs: out of range"); // <= 2 week
        withdrawLockupEpochs = _withdrawLockupEpochs;
        rewardLockupEpochs = _rewardLockupEpochs;
    }

    /* ========== VIEW FUNCTIONS ========== */

    // =========== Snapshot getters

    function latestSnapshotIndex() public view returns (uint256) {
        return masonryHistory.length.sub(1);
    }

    function getLatestSnapshot() internal view returns (MasonrySnapshot memory) {
        return masonryHistory[latestSnapshotIndex()];
    }

    function getLastSnapshotIndexOf(address mason) public view returns (uint256) {
        return masons[mason].lastSnapshotIndex;
    }

    function getLastSnapshotOf(address mason) internal view returns (MasonrySnapshot memory) {
        return masonryHistory[getLastSnapshotIndexOf(mason)];
    }

    // RJS check that the address, aka "mason", epcok start time + the widthdrawl lock up period is less than the current epock
    function canWithdraw(address mason) external view returns (bool) {
        return masons[mason].epochTimerStart.add(withdrawLockupEpochs) <= treasury.epoch();
    }

    // RJS check that the address, aka "mason", epcok start time + the reward lock up period is less than the current epock
    function canClaimReward(address mason) external view returns (bool) {
        return masons[mason].epochTimerStart.add(rewardLockupEpochs) <= treasury.epoch();
    }

    function epoch() external view returns (uint256) {
        return treasury.epoch();
    }

    function nextEpochPoint() external view returns (uint256) {
        return treasury.nextEpochPoint();
    }

    function getTombPrice() external view returns (uint256) {
        return treasury.getTombPrice();
    }

    // =========== Mason getters

    function rewardPerShare() public view returns (uint256) {
        return getLatestSnapshot().rewardPerShare;
    }

    function earned(address mason) public view returns (uint256) {
        uint256 latestRPS = getLatestSnapshot().rewardPerShare;
        uint256 storedRPS = getLastSnapshotOf(mason).rewardPerShare;

        return balanceOf(mason).mul(latestRPS.sub(storedRPS)).div(1e18).add(masons[mason].rewardEarned);
    }

    /* ========== MUTATIVE FUNCTIONS ========== */

    // called by address to stake into protocol
    function stake(uint256 amount) public override onlyOneBlock updateReward(msg.sender) {
        require(amount > 0, "Masonry: Cannot stake 0");
        super.stake(amount);
        masons[msg.sender].epochTimerStart = treasury.epoch(); // reset timer
        emit Staked(msg.sender, amount);
    }

    function withdraw(uint256 amount) public override onlyOneBlock masonExists updateReward(msg.sender) {
        require(amount > 0, "Masonry: Cannot withdraw 0");
        require(masons[msg.sender].epochTimerStart.add(withdrawLockupEpochs) <= treasury.epoch(), "Masonry: still in withdraw lockup");
        claimReward();
        super.withdraw(amount); // ShareWrapper's withdrawl function which updates global state as well as individual address'
        emit Withdrawn(msg.sender, amount);
    }

    function exit() external {
        withdraw(balanceOf(msg.sender));
    }

    // called by address to claim rewards. Resets the address' lockup timer and the total rewards accumilated before sending to address
    function claimReward() public updateReward(msg.sender) {
        uint256 reward = masons[msg.sender].rewardEarned;
        if (reward > 0) {
            require(masons[msg.sender].epochTimerStart.add(rewardLockupEpochs) <= treasury.epoch(), "Masonry: still in reward lockup");
            masons[msg.sender].epochTimerStart = treasury.epoch(); // reset timer
            masons[msg.sender].rewardEarned = 0;
            tomb.safeTransfer(msg.sender, reward);
            emit RewardPaid(msg.sender, reward);
        }
    }

    // called by Treasury to mark end / beging of epoch
    // moves tomb tokens from treasury to the masonary's reward pool?
    function allocateSeigniorage(uint256 amount) external onlyOneBlock onlyOperator {
        require(amount > 0, "Masonry: Cannot allocate 0");
        require(totalSupply() > 0, "Masonry: Cannot allocate when totalSupply is 0");

        // Create & add new snapshot
        uint256 prevRPS = getLatestSnapshot().rewardPerShare;
        uint256 nextRPS = prevRPS.add(amount.mul(1e18).div(totalSupply()));

        MasonrySnapshot memory newSnapshot = MasonrySnapshot({
            time: block.number,
            rewardReceived: amount,
            rewardPerShare: nextRPS
        });
        masonryHistory.push(newSnapshot);

        tomb.safeTransferFrom(msg.sender, address(this), amount);
        emit RewardAdded(msg.sender, amount);
    }

    function governanceRecoverUnsupported(IERC20 _token, uint256 _amount, address _to) external onlyOperator {
        // do not allow to drain core tokens
        require(address(_token) != address(tomb), "tomb");
        require(address(_token) != address(share), "share");
        _token.safeTransfer(_to, _amount);
    }
}

File 2 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 3 of 8 : SafeERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        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 safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "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");
        }
    }
}

File 4 of 8 : ContractGuard.sol
pragma solidity 0.6.12;

contract ContractGuard {
    mapping(uint256 => mapping(address => bool)) private _status;

    function checkSameOriginReentranted() internal view returns (bool) {
        return _status[block.number][tx.origin];
    }

    function checkSameSenderReentranted() internal view returns (bool) {
        return _status[block.number][msg.sender];
    }

    modifier onlyOneBlock() {
        require(!checkSameOriginReentranted(), "ContractGuard: one block, one function");
        require(!checkSameSenderReentranted(), "ContractGuard: one block, one function");

        _;

        _status[block.number][tx.origin] = true;
        _status[block.number][msg.sender] = true;
    }
}

File 5 of 8 : IBasisAsset.sol
pragma solidity ^0.6.0;

interface IBasisAsset {
    function mint(address recipient, uint256 amount) external returns (bool);

    function burn(uint256 amount) external;

    function burnFrom(address from, uint256 amount) external;

    function isOperator() external returns (bool);

    function operator() external view returns (address);

    function transferOperator(address newOperator_) external;
}

File 6 of 8 : ITreasury.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

interface ITreasury {
    function epoch() external view returns (uint256);

    function nextEpochPoint() external view returns (uint256);

    function getTombPrice() external view returns (uint256);

    function buyBonds(uint256 amount, uint256 targetPrice) external;

    function redeemBonds(uint256 amount, uint256 targetPrice) external;
}

File 7 of 8 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
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) {
        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) {
        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) {
        // 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) {
        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) {
        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) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @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) {
        require(b <= a, "SafeMath: subtraction overflow");
        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) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @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. 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) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        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) {
        require(b > 0, "SafeMath: modulo by zero");
        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) {
        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.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * 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) {
        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) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

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

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"executor","type":"address"},{"indexed":false,"internalType":"uint256","name":"at","type":"uint256"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"allocateSeigniorage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"mason","type":"address"}],"name":"canClaimReward","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"mason","type":"address"}],"name":"canWithdraw","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"mason","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"epoch","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"exit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"mason","type":"address"}],"name":"getLastSnapshotIndexOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTombPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_to","type":"address"}],"name":"governanceRecoverUnsupported","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_tomb","type":"address"},{"internalType":"contract IERC20","name":"_share","type":"address"},{"internalType":"contract ITreasury","name":"_treasury","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"initialized","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestSnapshotIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"masonryHistory","outputs":[{"internalType":"uint256","name":"time","type":"uint256"},{"internalType":"uint256","name":"rewardReceived","type":"uint256"},{"internalType":"uint256","name":"rewardPerShare","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"masons","outputs":[{"internalType":"uint256","name":"lastSnapshotIndex","type":"uint256"},{"internalType":"uint256","name":"rewardEarned","type":"uint256"},{"internalType":"uint256","name":"epochTimerStart","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextEpochPoint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardLockupEpochs","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardPerShare","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_withdrawLockupEpochs","type":"uint256"},{"internalType":"uint256","name":"_rewardLockupEpochs","type":"uint256"}],"name":"setLockUp","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_operator","type":"address"}],"name":"setOperator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"share","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"tomb","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"treasury","outputs":[{"internalType":"contract ITreasury","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawLockupEpochs","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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

Amount Staked
0

Amount Delegated
0

Staking Total
0

Staking Start Epoch
0

Staking Start Time
0

Proof of Importance
0

Origination Score
0

Validation Score
0

Active
0

Online
0

Downtime
0 s
Address Amount claimed Rewards Created On Epoch Created On
Block Uncle Number Difficulty Gas Used Reward
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