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// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

import "Ownable.sol";
import "MerkleProof.sol";
import "IERC20.sol";
import "Address.sol";
import "ITokenLocker.sol";
import "IVault.sol";

interface IClaimCallback {
    function claimCallback(address claimant, uint256 amount) external returns (bool success);
}

/**
    @title Prisma Airdrop Distributor
    @notice Distributes PRISMA to veCRV holders that voted in favor of Prisma's
            initial Curve governance proposal, and to early users who interacted
            with the protocol prior to token emissions.
    @dev Airdropped PRISMA tokens are given as a locked position. Distribution
         is via a merkle proof. The proof and script used to create are available
         on Github: https://github.com/prisma-fi/airdrop-proofs
 */
contract AirdropDistributor is Ownable {
    using Address for address;

    bytes32 public merkleRoot;
    uint256 public canClaimUntil;

    mapping(uint256 => uint256) private claimedBitMap;
    mapping(address receiver => address callback) public claimCallback;

    IERC20 public immutable token;
    ITokenLocker public immutable locker;
    address public immutable vault;

    uint256 private immutable lockToTokenRatio;
    uint256 private immutable CLAIM_LOCK_WEEKS;
    uint256 public constant CLAIM_DURATION = 13 weeks;

    event Claimed(address indexed claimant, address indexed receiver, uint256 index, uint256 amount);
    event MerkleRootSet(bytes32 root, uint256 canClaimUntil);

    constructor(IERC20 _token, ITokenLocker _locker, address _vault, uint256 lockWeeks) {
        token = _token;
        locker = _locker;
        vault = _vault;
        CLAIM_LOCK_WEEKS = lockWeeks;

        lockToTokenRatio = _locker.lockToTokenRatio();
    }

    function setMerkleRoot(bytes32 _merkleRoot) public onlyOwner {
        require(merkleRoot == bytes32(0), "merkleRoot already set");
        merkleRoot = _merkleRoot;
        canClaimUntil = block.timestamp + CLAIM_DURATION;
        emit MerkleRootSet(_merkleRoot, canClaimUntil);
    }

    function sweepUnclaimedTokens() external {
        require(merkleRoot != bytes32(0), "merkleRoot not set");
        require(block.timestamp > canClaimUntil, "Claims still active");
        uint256 amount = token.allowance(vault, address(this));
        require(amount > 0, "Nothing to sweep");
        token.transferFrom(vault, address(this), amount);
        token.approve(vault, amount);
        IPrismaVault(vault).increaseUnallocatedSupply(amount);
    }

    function isClaimed(uint256 index) public view returns (bool) {
        uint256 claimedWordIndex = index / 256;
        uint256 claimedBitIndex = index % 256;
        uint256 claimedWord = claimedBitMap[claimedWordIndex];
        uint256 mask = (1 << claimedBitIndex);
        return claimedWord & mask == mask;
    }

    function _setClaimed(uint256 index) private {
        uint256 claimedWordIndex = index / 256;
        uint256 claimedBitIndex = index % 256;
        claimedBitMap[claimedWordIndex] = claimedBitMap[claimedWordIndex] | (1 << claimedBitIndex);
    }

    /**
        @dev `amount` is after dividing by `locker.lockToTokenRatio()`
     */
    function claim(
        address claimant,
        address receiver,
        uint256 index,
        uint256 amount,
        bytes32[] calldata merkleProof
    ) external {
        if (msg.sender != claimant) {
            require(msg.sender == owner(), "onlyOwner");
            require(claimant.isContract(), "Claimant must be a contract");
        }

        require(merkleRoot != bytes32(0), "merkleRoot not set");
        require(block.timestamp < canClaimUntil, "Claims period has finished");
        require(!isClaimed(index), "Already claimed");

        bytes32 node = keccak256(abi.encodePacked(index, claimant, amount));
        require(MerkleProof.verifyCalldata(merkleProof, merkleRoot, node), "Invalid proof");

        _setClaimed(index);
        token.transferFrom(vault, address(this), amount * lockToTokenRatio);
        locker.lock(receiver, amount, CLAIM_LOCK_WEEKS);

        if (claimant != receiver) {
            address callback = claimCallback[receiver];
            if (callback != address(0)) IClaimCallback(callback).claimCallback(claimant, amount);
        }

        emit Claimed(claimant, receiver, index, amount * lockToTokenRatio);
    }

    /**
        @notice Set a claim callback contract
        @dev When set, claims directed to the caller trigger a callback to this address
     */
    function setClaimCallback(address _callback) external returns (bool) {
        claimCallback[msg.sender] = _callback;

        return true;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "Context.sol";

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

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

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

// SPDX-License-Identifier: MIT
// 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;
    }
}

// SPDX-License-Identifier: MIT
// 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)
        }
    }
}

// SPDX-License-Identifier: MIT
// 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);
}

// SPDX-License-Identifier: MIT
// 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);
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface ITokenLocker {
    struct LockData {
        uint256 amount;
        uint256 weeksToUnlock;
    }
    struct ExtendLockData {
        uint256 amount;
        uint256 currentWeeks;
        uint256 newWeeks;
    }

    event LockCreated(address indexed account, uint256 amount, uint256 _weeks);
    event LockExtended(address indexed account, uint256 amount, uint256 _weeks, uint256 newWeeks);
    event LocksCreated(address indexed account, LockData[] newLocks);
    event LocksExtended(address indexed account, ExtendLockData[] locks);
    event LocksFrozen(address indexed account, uint256 amount);
    event LocksUnfrozen(address indexed account, uint256 amount);
    event LocksWithdrawn(address indexed account, uint256 withdrawn, uint256 penalty);

    function extendLock(uint256 _amount, uint256 _weeks, uint256 _newWeeks) external returns (bool);

    function extendMany(ExtendLockData[] calldata newExtendLocks) external returns (bool);

    function freeze() external;

    function getAccountWeightWrite(address account) external returns (uint256);

    function getTotalWeightWrite() external returns (uint256);

    function lock(address _account, uint256 _amount, uint256 _weeks) external returns (bool);

    function lockMany(address _account, LockData[] calldata newLocks) external returns (bool);

    function setPenaltyWithdrawalsEnabled(bool _enabled) external returns (bool);

    function unfreeze(bool keepIncentivesVote) external;

    function withdrawExpiredLocks(uint256 _weeks) external returns (bool);

    function withdrawWithPenalty(uint256 amountToWithdraw) external returns (uint256);

    function MAX_LOCK_WEEKS() external view returns (uint256);

    function PRISMA_CORE() external view returns (address);

    function getAccountActiveLocks(
        address account,
        uint256 minWeeks
    ) external view returns (LockData[] memory lockData, uint256 frozenAmount);

    function getAccountBalances(address account) external view returns (uint256 locked, uint256 unlocked);

    function getAccountWeight(address account) external view returns (uint256);

    function getAccountWeightAt(address account, uint256 week) external view returns (uint256);

    function getTotalWeight() external view returns (uint256);

    function getTotalWeightAt(uint256 week) external view returns (uint256);

    function getWeek() external view returns (uint256 week);

    function getWithdrawWithPenaltyAmounts(
        address account,
        uint256 amountToWithdraw
    ) external view returns (uint256 amountWithdrawn, uint256 penaltyAmountPaid);

    function guardian() external view returns (address);

    function incentiveVoter() external view returns (address);

    function lockToTokenRatio() external view returns (uint256);

    function lockToken() external view returns (address);

    function owner() external view returns (address);

    function penaltyWithdrawalsEnabled() external view returns (bool);

    function prismaCore() external view returns (address);

    function totalDecayRate() external view returns (uint32);

    function totalUpdatedWeek() external view returns (uint16);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IPrismaVault {
    struct InitialAllowance {
        address receiver;
        uint256 amount;
    }

    event BoostCalculatorSet(address boostCalculator);
    event BoostDelegationSet(address indexed boostDelegate, bool isEnabled, uint256 feePct, address callback);
    event EmissionScheduleSet(address emissionScheduler);
    event IncreasedAllocation(address indexed receiver, uint256 increasedAmount);
    event NewReceiverRegistered(address receiver, uint256 id);
    event ReceiverIsActiveStatusModified(uint256 indexed id, bool isActive);
    event UnallocatedSupplyIncreased(uint256 increasedAmount, uint256 unallocatedTotal);
    event UnallocatedSupplyReduced(uint256 reducedAmount, uint256 unallocatedTotal);

    function allocateNewEmissions(uint256 id) external returns (uint256);

    function batchClaimRewards(
        address receiver,
        address boostDelegate,
        address[] calldata rewardContracts,
        uint256 maxFeePct
    ) external returns (bool);

    function increaseUnallocatedSupply(uint256 amount) external returns (bool);

    function registerReceiver(address receiver, uint256 count) external returns (bool);

    function setBoostCalculator(address _boostCalculator) external returns (bool);

    function setBoostDelegationParams(bool isEnabled, uint256 feePct, address callback) external returns (bool);

    function setEmissionSchedule(address _emissionSchedule) external returns (bool);

    function setInitialParameters(
        address _emissionSchedule,
        address _boostCalculator,
        uint256 totalSupply,
        uint64 initialLockWeeks,
        uint128[] calldata _fixedInitialAmounts,
        InitialAllowance[] calldata initialAllowances
    ) external;

    function setReceiverIsActive(uint256 id, bool isActive) external returns (bool);

    function transferAllocatedTokens(address claimant, address receiver, uint256 amount) external returns (bool);

    function transferTokens(address token, address receiver, uint256 amount) external returns (bool);

    function PRISMA_CORE() external view returns (address);

    function allocated(address) external view returns (uint256);

    function boostCalculator() external view returns (address);

    function boostDelegation(address) external view returns (bool isEnabled, uint16 feePct, address callback);

    function claimableRewardAfterBoost(
        address account,
        address receiver,
        address boostDelegate,
        address rewardContract
    ) external view returns (uint256 adjustedAmount, uint256 feeToDelegate);

    function emissionSchedule() external view returns (address);

    function getClaimableWithBoost(address claimant) external view returns (uint256 maxBoosted, uint256 boosted);

    function getWeek() external view returns (uint256 week);

    function guardian() external view returns (address);

    function idToReceiver(uint256) external view returns (address account, bool isActive);

    function lockWeeks() external view returns (uint64);

    function locker() external view returns (address);

    function owner() external view returns (address);

    function claimableBoostDelegationFees(address claimant) external view returns (uint256 amount);

    function prismaToken() external view returns (address);

    function receiverUpdatedWeek(uint256) external view returns (uint16);

    function totalUpdateWeek() external view returns (uint64);

    function unallocatedTotal() external view returns (uint128);

    function voter() external view returns (address);

    function weeklyEmissions(uint256) external view returns (uint128);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"contract ITokenLocker","name":"_locker","type":"address"},{"internalType":"address","name":"_vault","type":"address"},{"internalType":"uint256","name":"lockWeeks","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"claimant","type":"address"},{"indexed":true,"internalType":"address","name":"receiver","type":"address"},{"indexed":false,"internalType":"uint256","name":"index","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Claimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"root","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"canClaimUntil","type":"uint256"}],"name":"MerkleRootSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"CLAIM_DURATION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"canClaimUntil","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"claimant","type":"address"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32[]","name":"merkleProof","type":"bytes32[]"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"claimCallback","outputs":[{"internalType":"address","name":"callback","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"isClaimed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"locker","outputs":[{"internalType":"contract ITokenLocker","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"merkleRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_callback","type":"address"}],"name":"setClaimCallback","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_merkleRoot","type":"bytes32"}],"name":"setMerkleRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"sweepUnclaimedTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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000000000000000000000000da47862a83dac0c112ba89c6abc2159b95afd71c0000000000000000000000003f78544364c3eccdce4d9c89a630aea26122829d00000000000000000000000006bdf212c290473dcacea9793890c5024c7eb02c0000000000000000000000000000000000000000000000000000000000000034

-----Decoded View---------------
Arg [0] : _token (address): 0xdA47862a83dac0c112BA89c6abC2159b95afd71C
Arg [1] : _locker (address): 0x3f78544364c3eCcDCe4d9C89a630AEa26122829d
Arg [2] : _vault (address): 0x06bDF212C290473dCACea9793890C5024c7Eb02c
Arg [3] : lockWeeks (uint256): 52

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000da47862a83dac0c112ba89c6abc2159b95afd71c
Arg [1] : 0000000000000000000000003f78544364c3eccdce4d9c89a630aea26122829d
Arg [2] : 00000000000000000000000006bdf212c290473dcacea9793890c5024c7eb02c
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000034