Contract 0x7763fe0df38d9bdafda6fc9da127544b30fa0775

Txn Hash Method
Block
From
To
Value [Txn Fee]
0xbe9d502db1f2023e5517b4d0ed2a4612ace05c0b22c7d98979f4dbcbbcad1760Reset Redemption246807672023-01-08 16:00:5323 days 15 hrs ago0xcb69535abbc95a042914507f963bdd74ad0025ff IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.002270216 26
0xde2377afa4e1a82d216eaf13b8ad13d5243a4dc1750e65bd64a7bda5266dd199Redeem246807322023-01-08 15:59:4323 days 15 hrs ago0xf35e261393f9705e10b378c6785582b2a5a71094 IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00401166 30
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0x449c43f340068bc419503591b6e8e74c8099ab4e941cdf8ee9ff75570388da75Redeem245912062023-01-06 12:25:3025 days 18 hrs ago0xf96df77aea05c10a8073ee08725b16089d86d77e IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00401022 30
0x6f8f2df8d9fb0b62483663b28c1fbbde8cc47af3bb16d503adc7b75ec6231ccfRedeem245776072023-01-06 4:29:1626 days 2 hrs ago0x4faad99b9c2f41730de42e5f9e3d89bcdcf4c325 IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00401133 30
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0xab9615ba36db4edc262a006e37d0adf698a0c2501177f6c488716115e6a0f8caRedeem245665322023-01-05 22:02:3326 days 9 hrs ago0xcdc409c378b3a39c1f0c06b6b8aac1c73f6892e4 IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.004011 30
0xda5bc98de44fc202a432f0f5a1a07eecdaf41b0ca47fa361c46d579d6be2a6e2Redeem245648532023-01-05 21:03:5826 days 10 hrs ago0xdbd0b47368ab54d5f839e4e3116f3e3570ca952f IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00401055 30
0x774b15bf087d702842b7a3903c3720dcc1bb2999ee4839d6153ea52300fdc7c7Redeem245603922023-01-05 18:31:0926 days 12 hrs ago0x1789dbcf95387908acb6af43f071e66f1135f304 IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00401058 30
0xab3935f053a95a8213f26e2cde8914a3d6f98e9df2cba6c9afafe84c520ef36bRedeem245515932023-01-05 13:34:0126 days 17 hrs ago0x3eb243fd69ca9568c17c2ed005e4adb89b795722 IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00401091 30
0x982de5db7388b8ff5c2b03efe24d25ecc9ce8bf646df658a7682b38a07f28b5aRedeem245417072023-01-05 7:55:3726 days 23 hrs ago0x6087523d4e6898c0000dd13b4a42b6a40c36a60f IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00401055 30
0x9cd8a71496e621706e7072da1371178336238ea8c13bd69d6db9bd54d15198b2Redeem245342072023-01-05 3:40:4627 days 3 hrs ago0xa5d005f12bedcc3fc06143cb60c9b9f7c501a2dc IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00401022 30
0x7ef7a465e483ef9c4f3a2389ebfa3d3594e847e00d4eab3af97825aadeaf6a3eRedeem245315932023-01-05 2:11:2127 days 5 hrs ago0x7ed6e7fc2f853cfa5f0707440872918b6e58bdd4 IN  0x7763fe0df38d9bdafda6fc9da127544b30fa07750 AVAX0.00297699 30
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Contract Source Code Verified (Exact Match)

Contract Name:
Redemption

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at snowtrace.io on 2022-12-18
*/

// SPDX-License-Identifier: MIT

/*
╭╮╭╮╭┳━━━┳━╮╱╭┳━━━┳━━━┳━━━┳╮╱╱╭━━━┳━╮╱╭┳━━━╮
┃┃┃┃┃┃╭━╮┃┃╰╮┃┣╮╭╮┃╭━━┫╭━╮┃┃╱╱┃╭━╮┃┃╰╮┃┣╮╭╮┃
┃┃┃┃┃┃┃╱┃┃╭╮╰╯┃┃┃┃┃╰━━┫╰━╯┃┃╱╱┃┃╱┃┃╭╮╰╯┃┃┃┃┃
┃╰╯╰╯┃┃╱┃┃┃╰╮┃┃┃┃┃┃╭━━┫╭╮╭┫┃╱╭┫╰━╯┃┃╰╮┃┃┃┃┃┃
╰╮╭╮╭┫╰━╯┃┃╱┃┃┣╯╰╯┃╰━━┫┃┃╰┫╰━╯┃╭━╮┃┃╱┃┃┣╯╰╯┃
╱╰╯╰╯╰━━━┻╯╱╰━┻━━━┻━━━┻╯╰━┻━━━┻╯╱╰┻╯╱╰━┻━━━╯
╭━━━┳━━━┳━━━┳━━━┳━╮╭━┳━━━┳━━━━┳━━┳━━━┳━╮╱╭╮
┃╭━╮┃╭━━┻╮╭╮┃╭━━┫┃╰╯┃┃╭━╮┃╭╮╭╮┣┫┣┫╭━╮┃┃╰╮┃┃
┃╰━╯┃╰━━╮┃┃┃┃╰━━┫╭╮╭╮┃╰━╯┣╯┃┃╰╯┃┃┃┃╱┃┃╭╮╰╯┃
┃╭╮╭┫╭━━╯┃┃┃┃╭━━┫┃┃┃┃┃╭━━╯╱┃┃╱╱┃┃┃┃╱┃┃┃╰╮┃┃
┃┃┃╰┫╰━━┳╯╰╯┃╰━━┫┃┃┃┃┃┃╱╱╱╱┃┃╱╭┫┣┫╰━╯┃┃╱┃┃┃
╰╯╰━┻━━━┻━━━┻━━━┻╯╰╯╰┻╯╱╱╱╱╰╯╱╰━━┻━━━┻╯╱╰━╯
*/

// File: contracts/interfaces/IRedemption.sol



pragma solidity 0.8.17;

interface IRedemption {
    function redeem(
        uint256 _amountIn,
        uint256 _amount,
        bytes32[] calldata _merkleProof
    ) external;
}

// File: @openzeppelin/contracts/utils/cryptography/MerkleProof.sol


// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Tree proofs.
 *
 * The tree and the proofs can be generated using our
 * https://github.com/OpenZeppelin/merkle-tree[JavaScript library].
 * You will find a quickstart guide in the readme.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 * OpenZeppelin's JavaScript library generates merkle trees that are safe
 * against this attack out of the box.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Calldata version of {verify}
     *
     * _Available since v4.7._
     */
    function verifyCalldata(
        bytes32[] calldata proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProofCalldata(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Calldata version of {processProof}
     *
     * _Available since v4.7._
     */
    function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a merkle tree defined by
     * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}.
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function multiProofVerify(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProof(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Calldata version of {multiProofVerify}
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function multiProofVerifyCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProofCalldata(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction
     * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another
     * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false
     * respectively.
     *
     * CAUTION: Not all merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree
     * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the
     * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer).
     *
     * _Available since v4.7._
     */
    function processMultiProof(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            return hashes[totalHashes - 1];
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Calldata version of {processMultiProof}.
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function processMultiProofCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            return hashes[totalHashes - 1];
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
        return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

// File: @openzeppelin/contracts/utils/math/SafeMath.sol


// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)

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 generally not needed starting with Solidity 0.8, since 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 subtraction 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: @openzeppelin/contracts/utils/Address.sol


// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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");

        (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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// File: @openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

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

// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol


// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;




/**
 * @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 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'
        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) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

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

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// File: @openzeppelin/contracts/utils/Context.sol


// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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;
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @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() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        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 {
        _transferOwnership(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");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/Redemption.sol



pragma solidity 0.8.17;

/**
 * @title Redemption
 * @author Wonderland DAO
 */

contract Redemption is IRedemption, Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;
    /* ============ Events ============ */

    event RedemptionTokenAdded(address indexed token, uint256 exchangeRate);
    event RedemptionTokenRemoved(address indexed token);
    event Redeemed(address indexed redeemer, uint256 amountIn, uint256 amount);
    event TreasurySet(address indexed treasury);
    event BurnerSet(address indexed burner);
    event MerkleRootSet(bytes32 indexed merkleRoot);
    event RedemptionStarted(uint256 start, uint256 stop);
    event RedemptionResetted();

    /* ============ State Variables ============ */

    struct Claim {
        // Cummulative amount of redeemed tokens in recent redmeption.
        uint256 amount;
        // Last time claim was made.
        uint256 lastClaimed;
    }

    IERC20 public immutable redeemableToken;
    uint256 public immutable redeemableTokenDecimals;

    uint256 public redemptionStart;
    uint256 public redemptionStop;
    bytes32 public merkleRoot;
    address public treasury;
    address public burner;

    mapping(IERC20 => uint256) public exchangeRates;
    mapping(address => Claim) public claims;
    IERC20[] public redemptionTokens;

    bool private _isRedemptionResetted;

    /* ============ Constructor ============ */

    constructor(address _redeemableToken, uint256 _decimals) {
        require(
            _redeemableToken != address(0),
            "Redeemable token is address zero"
        );
        require(_decimals > 0, "Decimals cannot be zero");
        redeemableToken = IERC20(_redeemableToken);
        redeemableTokenDecimals = _decimals;
        _isRedemptionResetted = true;
    }

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

    modifier onActiveRedemption() {
        require(isRedemptionActive() == true, "Redemption is not active yet");
        _;
    }

    modifier onInactiveRedemption() {
        require(isRedemptionActive() == false, "Redemption period is active");
        _;
    }

    modifier afterRedemptionReset() {
        require(
            _isRedemptionResetted == true,
            "Assets not claimed by treasury"
        );
        _;
    }

    /* ============ External Functions ============ */

    /**
     * @notice Redeem redeemable token for redemption tokens.
     *
     * @dev If cummulative redeems exceed `_amount` redeem will fail.
     *
     * @param _amountIn Amount of redeemable token to reedem.
     * @param _amount Max cummulative redeemable amount for msg.sender, included in `_merkleProof`.
     * @param _merkleProof Merkle proof of amount for `msg.sender` account.
     */
    function redeem(
        uint256 _amountIn,
        uint256 _amount,
        bytes32[] calldata _merkleProof
    ) external onActiveRedemption {
        require(_amountIn > 0, "Cannot redeem zero tokens");

        // Reset claimed amount.
        Claim storage claim = claims[msg.sender];
        if (claim.lastClaimed <= redemptionStart) {
            claim.amount = 0;
        }

        // Verify amount to redeem.
        uint256 newAmountClaimed = _amountIn + claim.amount;
        require(
            newAmountClaimed <= _amount,
            "Amount is larger than redeemable"
        );

        // Verify the merkle proof.
        bytes32 node = keccak256(abi.encodePacked(msg.sender, _amount));
        require(
            MerkleProof.verify(_merkleProof, merkleRoot, node),
            "MerkleDistributor: Invalid Proof"
        );

        // Send redeemable token to burner address.
        claim.amount = newAmountClaimed;
        claim.lastClaimed = block.timestamp;
        redeemableToken.safeTransferFrom(msg.sender, burner, _amountIn);

        // Send redemption tokens to msg.sender.
        uint256 length = redemptionTokens.length;
        for (uint256 i; i < length; i++) {
            IERC20 _redemptionToken = redemptionTokens[i];
            uint256 amountToReceive = _amountIn
                .mul(exchangeRates[_redemptionToken])
                .div(10**redeemableTokenDecimals);
            _redemptionToken.safeTransfer(msg.sender, amountToReceive);
        }

        emit Redeemed(msg.sender, _amountIn, _amount);
    }

    /* ============ External View Functions ============ */

    /**
     * @notice Return length of `redemptionTokens` list.
     */
    function redemptionTokensLength() external view returns (uint256) {
        return redemptionTokens.length;
    }

    /**
     * @notice Return already claimed amount in current/most recent redemption.
     *
     * @param _account Address against which to check claimed amount.
     */
    function claimedCurrentRedemption(address _account)
        external
        view
        returns (uint256 claimed)
    {
        Claim storage claim = claims[_account];
        if (claim.lastClaimed <= redemptionStart) {
            claimed = 0;
        } else {
            claimed = claim.amount;
        }
    }

    /**
     * @notice Return boolean if the redemption is active.
     */
    function isRedemptionActive() public view returns (bool) {
        if (block.timestamp < redemptionStop) return true;
        else return false;
    }

    /* ============ External Owner Functions ============ */

    /**
     * @notice Add IERC20 token to redeem on next redemption.
     *
     * @dev Only callable in between redemptions and after reset.
     *
     * @param _redemptionToken Address of IERC20 token to add.
     * @param _exchangeRate Rate of how many tokens to redeem per 1 redeemable token.
     */
    function addRedemptionToken(IERC20 _redemptionToken, uint256 _exchangeRate)
        public
        onInactiveRedemption
        afterRedemptionReset
        onlyOwner
    {
        require(
            _redemptionToken != redeemableToken,
            "Token cannot be redeemable token"
        );
        require(address(_redemptionToken) != address(0), "Token address zero");
        require(_exchangeRate > 0, "Exchange rate zero");

        uint256 length = redemptionTokens.length;
        for (uint256 i; i < length; i++) {
            require(
                redemptionTokens[i] != _redemptionToken,
                "Token already exists"
            );
        }

        redemptionTokens.push(_redemptionToken);
        exchangeRates[_redemptionToken] = _exchangeRate;

        emit RedemptionTokenAdded(address(_redemptionToken), _exchangeRate);
    }

    /**
     * @notice Remove IERC20 token from next redemption.
     *
     * @dev Only callable in between redemptions and after reset.
     *
     * @param _index Index of redemption token.
     * @param _token Address of IERC20 token to remove.
     */
    function removeRedemptionToken(uint256 _index, address _token)
        public
        onInactiveRedemption
        afterRedemptionReset
        onlyOwner
    {
        uint256 length = redemptionTokens.length;
        require(_index < length, "Index doesn't exist");

        IERC20 redemptionToken = redemptionTokens[_index];
        require(
            address(redemptionToken) == _token,
            "Sanity: Token address mismatch"
        );

        exchangeRates[redemptionToken] = 0;
        redemptionTokens[_index] = redemptionTokens[length - 1];
        redemptionTokens.pop();

        emit RedemptionTokenRemoved(_token);
    }

    /**
     * @notice Set treasury address for next redemption.
     *
     * @dev Only callable in between redemptions and after reset.
     *
     * @param _treasury Address of the treasury.
     */
    function setTreasury(address _treasury)
        external
        onInactiveRedemption
        afterRedemptionReset
        onlyOwner
    {
        require(_treasury != address(0), "Treasury address zero");
        treasury = _treasury;
        emit TreasurySet(_treasury);
    }

    /**
     * @notice Set burner address for next redemption.
     *
     * @dev Only callable in between redemptions and after reset.
     *
     * @param _burner Address to which redeemable tokens will be sent.
     */
    function setBurner(address _burner)
        external
        onInactiveRedemption
        afterRedemptionReset
        onlyOwner
    {
        require(_burner != address(0), "Burner address zero");
        burner = _burner;
        emit BurnerSet(_burner);
    }

    /**
     * @notice Set merkle root for next redemption.
     *
     * @dev Only callable in between redemptions and afer reset.
     *
     * @param _merkleRoot Root of merkle tree used for proving redemption rights.
     */
    function setMerkleRoot(bytes32 _merkleRoot)
        external
        onInactiveRedemption
        afterRedemptionReset
        onlyOwner
    {
        require(_merkleRoot != bytes32(0), "Merkle Root zero");
        merkleRoot = _merkleRoot;
        emit MerkleRootSet(_merkleRoot);
    }

    /**
     * @notice Start redemption period.
     *
     * @dev Only callable in between redemptions and afer reset.
     *
     * @param _deadline Timestamp on which redemption will end.
     */
    function startRedemption(uint256 _deadline)
        external
        onInactiveRedemption
        afterRedemptionReset
        onlyOwner
    {
        require(burner != address(0), "Burner address zero");
        require(treasury != address(0), "Treasury address zero");
        require(merkleRoot != bytes32(0), "Merkle Root zero");
        require(redemptionTokens.length > 0, "No redemption tokens added");
        require(_deadline > block.timestamp, "Deadline in the past");

        _isRedemptionResetted = false;
        redemptionStart = block.timestamp;
        redemptionStop = _deadline;

        emit RedemptionStarted(redemptionStart, redemptionStop);
    }

    /**
     * @notice Reset redemption and all parameters, send all remaining tokens to treasury.
     *
     * @dev May be called any time, ends active redemptions.
     */
    function resetRedemption() external onlyOwner {
        require(treasury != address(0), "Treasury address zero");

        uint256 length = redemptionTokens.length;
        for (uint256 i; i < length; i++) {
            IERC20 redemptionToken = redemptionTokens[i];
            redemptionToken.safeTransfer(
                treasury,
                redemptionToken.balanceOf(address(this))
            );
        }

        burner = address(0);
        treasury = address(0);
        merkleRoot = bytes32(0);
        if (redemptionStop > block.timestamp) redemptionStop = block.timestamp;
        _isRedemptionResetted = true;

        emit RedemptionResetted();
    }

    /**
     * @notice Send IERC20 token to the treasury.
     *
     * @dev Only callable in between redemptions and after reset.
     *
     * @param _token Address of IERC20 token to recover.
     */
    function recoverERC20(IERC20 _token)
        external
        onInactiveRedemption
        afterRedemptionReset
        onlyOwner
    {
        require(treasury != address(0), "Treasury address zero");
        _token.safeTransfer(treasury, _token.balanceOf(address(this)));
    }
}

Contract ABI

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IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"redemptionTokensLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_index","type":"uint256"},{"internalType":"address","name":"_token","type":"address"}],"name":"removeRedemptionToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"resetRedemption","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_burner","type":"address"}],"name":"setBurner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_merkleRoot","type":"bytes32"}],"name":"setMerkleRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_treasury","type":"address"}],"name":"setTreasury","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_deadline","type":"uint256"}],"name":"startRedemption","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"treasury","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000000da67235dd5787d67955420c84ca1cecd4e5bb3b0000000000000000000000000000000000000000000000000000000000000012

-----Decoded View---------------
Arg [0] : _redeemableToken (address): 0x0da67235dd5787d67955420c84ca1cecd4e5bb3b
Arg [1] : _decimals (uint256): 18

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000000da67235dd5787d67955420c84ca1cecd4e5bb3b
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000012


Deployed ByteCode Sourcemap

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Swarm Source

ipfs://b8828af907f1041dd9b7b3de2deaf85759f7eac50b8a14fcda7d73481eb965ec
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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