Contract 0xd545fd6080db07eddcc1f57dc28a53d930837a8d

Contract Overview

Balance:
0 GLMR

GLMR Value:
$0.00

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xd6fcad8eb27d0da639afd6392c28cd3df7e29d0a683b4ba64c6600ecc28672aaDisembark32579062023-03-31 19:08:1212 hrs 41 mins ago0xbb437059584e30598b3af0154472e47e6e2a45b9 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.009971304
0x9a6d3732e4b234e04c764b86efa7610868f55e840f230bc97cd01daa60a0f518Depart32516172023-03-30 21:04:121 day 10 hrs ago0xbb437059584e30598b3af0154472e47e6e2a45b9 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.009896396
0x141fa82d58b998f748f146d0d2797aa1ce0a56c70fcd3622ddcef6c656283683Disembark32302202023-03-27 19:08:124 days 12 hrs ago0xbb437059584e30598b3af0154472e47e6e2a45b9 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.009971304
0x3298bd85baba6f6e236e13c56045c061e44a3379e1dd27776d0fb27c5acfaf34Depart32238122023-03-26 21:04:125 days 10 hrs ago0xbb437059584e30598b3af0154472e47e6e2a45b9 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.009896396
0xea2610977989e3274af2576bd06f57337660c0af42b47d6332da43fdbac11c20Embark With Sign...32064662023-03-24 8:54:067 days 22 hrs ago0x9052ed2b33fd19c36f7f1e4f0e965cb3d9a16c16 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0096949755
0x2fbb561c14e5f72b4119eedc872526a54d0aac2bafbef9663783c7420da1baaaEmbark With Sign...31853252023-03-21 8:18:1810 days 23 hrs ago0xd0c44bfe57153fabbdd02c98568ed88925eca578 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0094115875
0x30ee6da681f2d1894e662d55c418079a5b7467ee2b94920b9825aad18f2705a3Embark With Sign...31809272023-03-20 17:13:1811 days 14 hrs ago0x193db18a5ef9a0320b7374c1fe8af976235f3211 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0114326555
0x9bd645f8a8641a36934ddb13f2c59677dd16ed24884e00f226a62b11881fd854Disembark31744472023-03-19 19:08:3012 days 12 hrs ago0xbb437059584e30598b3af0154472e47e6e2a45b9 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.009971304
0x72ab9a91d78e73c3d735183eb5abb6dba333a67f2a36d6fac8cbcf3beccfdcebDepart31680442023-03-18 21:04:0613 days 10 hrs ago0xbb437059584e30598b3af0154472e47e6e2a45b9 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.009896396
0x044faa0b495230c52dc74baeba47ccf0af7a448e22b3474fbb2437dfbdfc9ed6Embark With Sign...31633632023-03-18 4:57:3014 days 2 hrs ago0xd0c44bfe57153fabbdd02c98568ed88925eca578 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0111452075
0xcee4504347807b32029ff1a1e0c36051b23f5dee168465ab702db7fd57a14c89Embark With Sign...31517492023-03-16 13:22:5415 days 18 hrs ago0xc279fe84665582169a96cf5621361af086377a79 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.011641953939
0x8b9cf2327ee6dc13a995afaebda06e37022730268067e4c8772e57bdf0357e4eEmbark With Sign...31245702023-03-11 21:11:1520 days 10 hrs ago0xcc46564eb2063b60cd457da49d09dca9544dfeae IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0114338735
0x689e2ef1a7855dd46d0c3644a31ff3084977db9dcd26feaeaed2ce3e38a470eaEmbark With Sign...31240782023-03-11 18:23:3720 days 13 hrs ago0xd76970f0ea845dfd9d424d74f17c13e3ee9ad6ad IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0131695235
0x29f23b5023be888fb51056111cf244f5d0fee92f3bd988887470c56436c814e9Embark With Sign...31239822023-03-11 17:50:5520 days 13 hrs ago0x1119c4ce8f56d96a51b5a38260fede037c7126f5 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0095529
0x86497e032a692debb335ac9f1e921e555a80763c1c798c6886e6a9c81c128cfeEmbark With Sign...31228052023-03-11 12:53:5420 days 18 hrs ago0xcc46564eb2063b60cd457da49d09dca9544dfeae IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0111439895
0xced23af28a3f7f6a9b01f56e1307e06ad0c3ca16cdaa33200ccb97f16435b1f9Embark With Sign...31216312023-03-11 8:48:3620 days 23 hrs ago0xc279fe84665582169a96cf5621361af086377a79 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.01119229842
0x69c5c17c4d1ab3831f84db9f15d5fa8e47ce1a52d60b096bcc1ec81ee110362cEmbark With Sign...31133682023-03-10 4:11:1822 days 3 hrs ago0x9052ed2b33fd19c36f7f1e4f0e965cb3d9a16c16 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0114318435
0x7bc96c1ecb092869b983d6ec1b29cb231dc00be199ac9ec7e840e28add6bf19bEmbark With Sign...31133502023-03-10 4:07:0622 days 3 hrs ago0x9052ed2b33fd19c36f7f1e4f0e965cb3d9a16c16 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0094103695
0xf62106e3652057d9023e548fd3b918ebd3df222b86a731d68b6c894aac56f476Embark With Sign...31002352023-03-08 7:14:1824 days 35 mins ago0x9052ed2b33fd19c36f7f1e4f0e965cb3d9a16c16 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0092065575
0x62b8e8a98d8bc0baf2b44f46330faaa934e79c39b1611edb7dbe2185b8663813Embark With Sign...30969502023-03-07 20:07:0624 days 11 hrs ago0x8ca32d299a580eee4feca57216431225178670dc IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0096982235
0xc873c705600ffc4865038aad37a190be05df2b3d1dfc97eae8dbbcbfb2ae07c7Embark With Sign...30684102023-03-03 19:01:0028 days 12 hrs ago0x1119c4ce8f56d96a51b5a38260fede037c7126f5 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.009743958
0x95a1e9f4c423359c9c12be86f8b57f44ba223b2c81727aafdf1672957f5ead0aEmbark With Sign...30299802023-02-26 7:45:5434 days 3 mins ago0x8ca32d299a580eee4feca57216431225178670dc IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0096949755
0xb1009b97673423c9ffb7d34e258eeffd39a784e7b532c9fd22c4e16b428ce23cEmbark With Sign...30160272023-02-24 8:09:1835 days 23 hrs ago0x1119c4ce8f56d96a51b5a38260fede037c7126f5 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0096961935
0x0ca521edde404307b28800fd22def7f3a87f27c053decb574bed5c243884f538Embark With Sign...29926912023-02-21 0:21:0039 days 7 hrs ago0xbaeeb113dc6fc6a67b5a0bcb8154c6b71081d3b9 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.009143526
0x471bd6789aac7d0c55e0018f6f98b6f4987cc6a4f3be3a560eb5a83918f30702Embark With Sign...29908752023-02-20 18:02:4239 days 13 hrs ago0x193db18a5ef9a0320b7374c1fe8af976235f3211 IN  0xd545fd6080db07eddcc1f57dc28a53d930837a8d0 GLMR0.0094103695
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Contract Source Code Verified (Exact Match)

Contract Name:
Fraxferry

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
Yes with 100000 runs

Other Settings:
default evmVersion, GNU GPLv2 license

Contract Source Code (Solidity)

/**
 *Submitted for verification at moonbeam.moonscan.io on 2022-11-13
*/

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;

// Sources flattened with hardhat v2.12.0 https://hardhat.org

// File @openzeppelin/contracts/token/ERC20/[email protected]

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


/**
 * @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/extensions/[email protected]

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


/**
 * @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 @uniswap/v3-periphery/contracts/libraries/[email protected]


library TransferHelper {
    /// @notice Transfers tokens from the targeted address to the given destination
    /// @notice Errors with 'STF' if transfer fails
    /// @param token The contract address of the token to be transferred
    /// @param from The originating address from which the tokens will be transferred
    /// @param to The destination address of the transfer
    /// @param value The amount to be transferred
    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) =
            token.call(abi.encodeWithSelector(IERC20.transferFrom.selector, from, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'STF');
    }

    /// @notice Transfers tokens from msg.sender to a recipient
    /// @dev Errors with ST if transfer fails
    /// @param token The contract address of the token which will be transferred
    /// @param to The recipient of the transfer
    /// @param value The value of the transfer
    function safeTransfer(
        address token,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.transfer.selector, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'ST');
    }

    /// @notice Approves the stipulated contract to spend the given allowance in the given token
    /// @dev Errors with 'SA' if transfer fails
    /// @param token The contract address of the token to be approved
    /// @param to The target of the approval
    /// @param value The amount of the given token the target will be allowed to spend
    function safeApprove(
        address token,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.approve.selector, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'SA');
    }

    /// @notice Transfers ETH to the recipient address
    /// @dev Fails with `STE`
    /// @param to The destination of the transfer
    /// @param value The value to be transferred
    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        require(success, 'STE');
    }
}


// File contracts/Fraxferry/Fraxferry.sol


// ====================================================================
// |     ______                   _______                             |
// |    / _____________ __  __   / ____(_____  ____ _____  ________   |
// |   / /_  / ___/ __ `| |/_/  / /_  / / __ \/ __ `/ __ \/ ___/ _ \  |
// |  / __/ / /  / /_/ _>  <   / __/ / / / / / /_/ / / / / /__/  __/  |
// | /_/   /_/   \__,_/_/|_|  /_/   /_/_/ /_/\__,_/_/ /_/\___/\___/   |
// |                                                                  |
// ====================================================================
// ============================ Fraxferry =============================
// ====================================================================
// Ferry that can be used to ship tokens between chains

// Frax Finance: https://github.com/FraxFinance

// Primary Author(s)
// Dennis: https://github.com/denett

/*
** Modus operandi:
** - User sends tokens to the contract. This transaction is stored in the contract.
** - Captain queries the source chain for transactions to ship.
** - Captain sends batch (start, end, hash) to start the trip,
** - Crewmembers check the batch and can dispute it if it is invalid.
** - Non disputed batches can be executed by the first officer by providing the transactions as calldata. 
** - Hash of the transactions must be equal to the hash in the batch. User receives their tokens on the other chain.
** - In case there was a fraudulent transaction (a hacker for example), the owner can cancel a single transaction, such that it will not be executed.
** - The owner can manually manage the tokens in the contract and must make sure it has enough funds.
**
** What must happen for a false batch to be executed:
** - Captain is tricked into proposing a batch with a false hash
** - All crewmembers bots are offline/censured/compromised and no one disputes the proposal
**
** Other risks:
** - Reorgs on the source chain. Avoided, by only returning the transactions on the source chain that are at least one hour old.
** - Rollbacks of optimistic rollups. Avoided by running a node.
** - Operators do not have enough time to pause the chain after a fake proposal. Avoided by requiring a minimal amount of time between sending the proposal and executing it.
*/



contract Fraxferry {
   IERC20 immutable public token;
   IERC20 immutable public targetToken;
   uint immutable public chainid;
   uint immutable public targetChain;   
   
   address public owner;
   address public nominatedOwner;
   address public captain;
   address public firstOfficer;
   mapping(address => bool) public crewmembers;

   bool public paused;
   
   uint public MIN_WAIT_PERIOD_ADD=3600; // Minimal 1 hour waiting
   uint public MIN_WAIT_PERIOD_EXECUTE=82800; // Minimal 23 hour waiting
   uint public FEE=1*1e18; // 1 token
   uint immutable MAX_FEE=100e18; // Max fee is 100 tokens
   uint immutable public REDUCED_DECIMALS=1e10;
   
   Transaction[] public transactions;
   mapping(uint => bool) public cancelled;
   uint public executeIndex;
   Batch[] public batches;
   
   struct Transaction {
      address user;
      uint64 amount;
      uint32 timestamp;
   }
   
   struct Batch {
      uint64 start;
      uint64 end;
      uint64 departureTime;
      uint64 status;
      bytes32 hash;
   }
   
   struct BatchData {
      uint startTransactionNo;
      Transaction[] transactions;
   }

   constructor(IERC20 _token, uint _chainid, IERC20 _targetToken, uint _targetChain) {
      //require (block.chainid==_chainid,"Wrong chain");
      chainid=_chainid;
      token = _token;
      targetToken = _targetToken;
      owner = msg.sender;
      targetChain = _targetChain;
   }
   
   
   // ############## Events ##############
   
   event Embark(address indexed sender, uint index, uint amount, uint amountAfterFee, uint timestamp);
   event Disembark(uint start, uint end, bytes32 hash); 
   event Depart(uint batchNo,uint start,uint end,bytes32 hash); 
   event RemoveBatch(uint batchNo);
   event DisputeBatch(uint batchNo, bytes32 hash);
   event Cancelled(uint index, bool cancel);
   event Pause(bool paused);
   event OwnerNominated(address indexed newOwner);
   event OwnerChanged(address indexed previousOwner,address indexed newOwner);
   event SetCaptain(address indexed previousCaptain, address indexed newCaptain);   
   event SetFirstOfficer(address indexed previousFirstOfficer, address indexed newFirstOfficer);
   event SetCrewmember(address indexed crewmember,bool set); 
   event SetFee(uint previousFee, uint fee);
   event SetMinWaitPeriods(uint previousMinWaitAdd,uint previousMinWaitExecute,uint minWaitAdd,uint minWaitExecute); 
   
   // ############## Modifiers ##############
   
   modifier isOwner() {
      require (msg.sender==owner,"Not owner");
      _;
   }
   
   modifier isCaptain() {
      require (msg.sender==captain,"Not captain");
      _;
   }
   
   modifier isFirstOfficer() {
      require (msg.sender==firstOfficer,"Not first officer");
      _;
   }   
    
   modifier isCrewmember() {
      require (crewmembers[msg.sender] || msg.sender==owner || msg.sender==captain || msg.sender==firstOfficer,"Not crewmember");
      _;
   }
   
   modifier notPaused() {
      require (!paused,"Paused");
      _;
   } 
   
   // ############## Ferry actions ##############
   
   function embarkWithRecipient(uint amount, address recipient) public notPaused {
      amount = (amount/REDUCED_DECIMALS)*REDUCED_DECIMALS; // Round amount to fit in data structure
      require (amount>FEE,"Amount too low");
      require (amount/REDUCED_DECIMALS<=type(uint64).max,"Amount too high");
      TransferHelper.safeTransferFrom(address(token),msg.sender,address(this),amount); 
      uint64 amountAfterFee = uint64((amount-FEE)/REDUCED_DECIMALS);
      emit Embark(recipient,transactions.length,amount,amountAfterFee*REDUCED_DECIMALS,block.timestamp);
      transactions.push(Transaction(recipient,amountAfterFee,uint32(block.timestamp)));   
   }
   
   function embark(uint amount) public {
      embarkWithRecipient(amount, msg.sender) ;
   }

   function embarkWithSignature(
      uint256 _amount,
      address recipient,
      uint256 deadline,
      bool approveMax,
      uint8 v,
      bytes32 r,
      bytes32 s
   ) public {
      uint amount = approveMax ? type(uint256).max : _amount;
      IERC20Permit(address(token)).permit(msg.sender, address(this), amount, deadline, v, r, s);
      embarkWithRecipient(amount,recipient);
   }   
   
   function depart(uint start, uint end, bytes32 hash) external notPaused isCaptain {
      require ((batches.length==0 && start==0) || (batches.length>0 && start==batches[batches.length-1].end+1),"Wrong start");
      require (end>=start && end<type(uint64).max,"Wrong end");
      batches.push(Batch(uint64(start),uint64(end),uint64(block.timestamp),0,hash));
      emit Depart(batches.length-1,start,end,hash);
   }
   
   function disembark(BatchData calldata batchData) external notPaused isFirstOfficer {
      Batch memory batch = batches[executeIndex++];
      require (batch.status==0,"Batch disputed");
      require (batch.start==batchData.startTransactionNo,"Wrong start");
      require (batch.start+batchData.transactions.length-1==batch.end,"Wrong size");
      require (block.timestamp-batch.departureTime>=MIN_WAIT_PERIOD_EXECUTE,"Too soon");
      
      bytes32 hash = keccak256(abi.encodePacked(targetChain, targetToken, chainid, token, batch.start));
      for (uint i=0;i<batchData.transactions.length;++i) {
         if (!cancelled[batch.start+i]) {
            TransferHelper.safeTransfer(address(token),batchData.transactions[i].user,batchData.transactions[i].amount*REDUCED_DECIMALS);
         }
         hash = keccak256(abi.encodePacked(hash, batchData.transactions[i].user,batchData.transactions[i].amount));
      }
      require (batch.hash==hash,"Wrong hash");
      emit Disembark(batch.start,batch.end,hash);
   }
   
   function removeBatches(uint batchNo) external isOwner {
      require (executeIndex<=batchNo,"Batch already executed");
      while (batches.length>batchNo) batches.pop();
      emit RemoveBatch(batchNo);
   }
   
   function disputeBatch(uint batchNo, bytes32 hash) external isCrewmember {
      require (batches[batchNo].hash==hash,"Wrong hash");
      require (executeIndex<=batchNo,"Batch already executed");
      require (batches[batchNo].status==0,"Batch already disputed");
      batches[batchNo].status=1; // Set status on disputed
      _pause(true);
      emit DisputeBatch(batchNo,hash);
   }
   
   function pause() external isCrewmember {
      _pause(true);
   }
   
   function unPause() external isOwner {
      _pause(false);
   }   
   
   function _pause(bool _paused) internal {
      paused=_paused;
      emit Pause(_paused);
   } 
   
   function _jettison(uint index, bool cancel) internal {
      require (executeIndex==0 || index>batches[executeIndex-1].end,"Transaction already executed");
      cancelled[index]=cancel;
      emit Cancelled(index,cancel);
   }
   
   function jettison(uint index, bool cancel) external isOwner {
      _jettison(index,cancel);
   }
   
   function jettisonGroup(uint[] calldata indexes, bool cancel) external isOwner {
      for (uint i=0;i<indexes.length;++i) {
         _jettison(indexes[i],cancel);
      }
   }   
   
   // ############## Parameters management ##############
   
   function setFee(uint _FEE) external isOwner {
      require(FEE<MAX_FEE);
      emit SetFee(FEE,_FEE);
      FEE=_FEE;
   }
   
   function setMinWaitPeriods(uint _MIN_WAIT_PERIOD_ADD, uint _MIN_WAIT_PERIOD_EXECUTE) external isOwner {
      require(_MIN_WAIT_PERIOD_ADD>=3600 && _MIN_WAIT_PERIOD_EXECUTE>=3600,"Period too short");
      emit SetMinWaitPeriods(MIN_WAIT_PERIOD_ADD, MIN_WAIT_PERIOD_EXECUTE,_MIN_WAIT_PERIOD_ADD, _MIN_WAIT_PERIOD_EXECUTE);
      MIN_WAIT_PERIOD_ADD=_MIN_WAIT_PERIOD_ADD;
      MIN_WAIT_PERIOD_EXECUTE=_MIN_WAIT_PERIOD_EXECUTE;
   }
   
   // ############## Roles management ##############
   
   function nominateNewOwner(address newOwner) external isOwner {
      nominatedOwner = newOwner;
      emit OwnerNominated(newOwner);
   }   
   
   function acceptOwnership() external {
      require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
      emit OwnerChanged(owner, nominatedOwner);
      owner = nominatedOwner;
      nominatedOwner = address(0);
   }
   
   function setCaptain(address newCaptain) external isOwner {
      emit SetCaptain(captain,newCaptain);
      captain=newCaptain;
   }
   
   function setFirstOfficer(address newFirstOfficer) external isOwner {
      emit SetFirstOfficer(firstOfficer,newFirstOfficer);
      firstOfficer=newFirstOfficer;
   }    
   
   function setCrewmember(address crewmember, bool set) external isOwner {
      crewmembers[crewmember]=set;
      emit SetCrewmember(crewmember,set);
   }   
  
   
   // ############## Token management ##############   
   
   function sendTokens(address receiver, uint amount) external isOwner {
      require (receiver!=address(0),"Zero address not allowed");
      TransferHelper.safeTransfer(address(token),receiver,amount);
   }   
   
   // Generic proxy
   function execute(address _to, uint256 _value, bytes calldata _data) external isOwner returns (bool, bytes memory) {
      require(_data.length==0 || _to.code.length>0,"Can not call a function on a EOA");
      (bool success, bytes memory result) = _to.call{value:_value}(_data);
      return (success, result);
   }   
   
   // ############## Views ##############
   function getNextBatch(uint _start, uint max) public view returns (uint start, uint end, bytes32 hash) {
      uint cutoffTime = block.timestamp-MIN_WAIT_PERIOD_ADD;
      if (_start<transactions.length && transactions[_start].timestamp<cutoffTime) {
         start=_start;
         end=start+max-1;
         if (end>=transactions.length) end=transactions.length-1;
         while(transactions[end].timestamp>=cutoffTime) end--;
         hash = getTransactionsHash(start,end);
      }
   }
   
   function getBatchData(uint start, uint end) public view returns (BatchData memory data) {
      data.startTransactionNo = start;
      data.transactions = new Transaction[](end-start+1);
      for (uint i=start;i<=end;++i) {
         data.transactions[i-start]=transactions[i];
      }
   }
   
   function getBatchAmount(uint start, uint end) public view returns (uint totalAmount) {
      for (uint i=start;i<=end;++i) {
         totalAmount+=transactions[i].amount;
      }
      totalAmount*=REDUCED_DECIMALS;
   }
   
   function getTransactionsHash(uint start, uint end) public view returns (bytes32) {
      bytes32 result = keccak256(abi.encodePacked(chainid, token, targetChain, targetToken, uint64(start)));
      for (uint i=start;i<=end;++i) {
         result = keccak256(abi.encodePacked(result, transactions[i].user,transactions[i].amount));
      }
      return result;
   }   
   
   function noTransactions() public view returns (uint) {
      return transactions.length;
   }
   
   function noBatches() public view returns (uint) {
      return batches.length;
   }
}

Contract ABI

[{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"uint256","name":"_chainid","type":"uint256"},{"internalType":"contract IERC20","name":"_targetToken","type":"address"},{"internalType":"uint256","name":"_targetChain","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"index","type":"uint256"},{"indexed":false,"internalType":"bool","name":"cancel","type":"bool"}],"name":"Cancelled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"batchNo","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"start","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"end","type":"uint256"},{"indexed":false,"internalType":"bytes32","name":"hash","type":"bytes32"}],"name":"Depart","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"start","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"end","type":"uint256"},{"indexed":false,"internalType":"bytes32","name":"hash","type":"bytes32"}],"name":"Disembark","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"batchNo","type":"uint256"},{"indexed":false,"internalType":"bytes32","name":"hash","type":"bytes32"}],"name":"DisputeBatch","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"index","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountAfterFee","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"Embark","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerNominated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"paused","type":"bool"}],"name":"Pause","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"batchNo","type":"uint256"}],"name":"RemoveBatch","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousCaptain","type":"address"},{"indexed":true,"internalType":"address","name":"newCaptain","type":"address"}],"name":"SetCaptain","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"crewmember","type":"address"},{"indexed":false,"internalType":"bool","name":"set","type":"bool"}],"name":"SetCrewmember","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"previousFee","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"SetFee","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousFirstOfficer","type":"address"},{"indexed":true,"internalType":"address","name":"newFirstOfficer","type":"address"}],"name":"SetFirstOfficer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"previousMinWaitAdd","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"previousMinWaitExecute","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"minWaitAdd","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"minWaitExecute","type":"uint256"}],"name":"SetMinWaitPeriods","type":"event"},{"inputs":[],"name":"FEE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_WAIT_PERIOD_ADD","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_WAIT_PERIOD_EXECUTE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"REDUCED_DECIMALS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"batches","outputs":[{"internalType":"uint64","name":"start","type":"uint64"},{"internalType":"uint64","name":"end","type":"uint64"},{"internalType":"uint64","name":"departureTime","type":"uint64"},{"internalType":"uint64","name":"status","type":"uint64"},{"internalType":"bytes32","name":"hash","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"cancelled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"captain","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"chainid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"crewmembers","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"end","type":"uint256"},{"internalType":"bytes32","name":"hash","type":"bytes32"}],"name":"depart","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"startTransactionNo","type":"uint256"},{"components":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint64","name":"amount","type":"uint64"},{"internalType":"uint32","name":"timestamp","type":"uint32"}],"internalType":"struct Fraxferry.Transaction[]","name":"transactions","type":"tuple[]"}],"internalType":"struct Fraxferry.BatchData","name":"batchData","type":"tuple"}],"name":"disembark","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"batchNo","type":"uint256"},{"internalType":"bytes32","name":"hash","type":"bytes32"}],"name":"disputeBatch","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"embark","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"embarkWithRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bool","name":"approveMax","type":"bool"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"embarkWithSignature","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"execute","outputs":[{"internalType":"bool","name":"","type":"bool"},{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"executeIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"firstOfficer","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"end","type":"uint256"}],"name":"getBatchAmount","outputs":[{"internalType":"uint256","name":"totalAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"end","type":"uint256"}],"name":"getBatchData","outputs":[{"components":[{"internalType":"uint256","name":"startTransactionNo","type":"uint256"},{"components":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint64","name":"amount","type":"uint64"},{"internalType":"uint32","name":"timestamp","type":"uint32"}],"internalType":"struct Fraxferry.Transaction[]","name":"transactions","type":"tuple[]"}],"internalType":"struct Fraxferry.BatchData","name":"data","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_start","type":"uint256"},{"internalType":"uint256","name":"max","type":"uint256"}],"name":"getNextBatch","outputs":[{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"end","type":"uint256"},{"internalType":"bytes32","name":"hash","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"end","type":"uint256"}],"name":"getTransactionsHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"},{"internalType":"bool","name":"cancel","type":"bool"}],"name":"jettison","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"indexes","type":"uint256[]"},{"internalType":"bool","name":"cancel","type":"bool"}],"name":"jettisonGroup","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"noBatches","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"noTransactions","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"nominateNewOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"nominatedOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"batchNo","type":"uint256"}],"name":"removeBatches","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"sendTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newCaptain","type":"address"}],"name":"setCaptain","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"crewmember","type":"address"},{"internalType":"bool","name":"set","type":"bool"}],"name":"setCrewmember","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_FEE","type":"uint256"}],"name":"setFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newFirstOfficer","type":"address"}],"name":"setFirstOfficer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_MIN_WAIT_PERIOD_ADD","type":"uint256"},{"internalType":"uint256","name":"_MIN_WAIT_PERIOD_EXECUTE","type":"uint256"}],"name":"setMinWaitPeriods","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"targetChain","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"targetToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"transactions","outputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint64","name":"amount","type":"uint64"},{"internalType":"uint32","name":"timestamp","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unPause","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000322e86852e492a7ee17f28a78c663da38fb33bfb0000000000000000000000000000000000000000000000000000000000000504000000000000000000000000853d955acef822db058eb8505911ed77f175b99e0000000000000000000000000000000000000000000000000000000000000001

-----Decoded View---------------
Arg [0] : _token (address): 0x322e86852e492a7ee17f28a78c663da38fb33bfb
Arg [1] : _chainid (uint256): 1284
Arg [2] : _targetToken (address): 0x853d955acef822db058eb8505911ed77f175b99e
Arg [3] : _targetChain (uint256): 1

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000322e86852e492a7ee17f28a78c663da38fb33bfb
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000504
Arg [2] : 000000000000000000000000853d955acef822db058eb8505911ed77f175b99e
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000001


Deployed ByteCode Sourcemap

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Swarm Source

ipfs://5576932e7b01a615616f43af263e14dc4e80f024a8a25d3bd971534693622e61
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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