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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/**
 * @title EthereumProxy
 * @notice This contract performs an Ethereum transfer and stores a reference
 */
contract EthereumProxy {
  // Event to declare a transfer with a reference
  event TransferWithReference(address to, uint256 amount, bytes indexed paymentReference);

  // Fallback function returns funds to the sender
  receive() external payable {
    revert('not payable receive');
  }

  /**
   * @notice Performs an Ethereum transfer with a reference
   * @param _to Transfer recipient
   * @param _paymentReference Reference of the payment related
   */
  function transferWithReference(address payable _to, bytes calldata _paymentReference)
    external
    payable
  {
    (bool success, ) = _to.call{value: msg.value}('');
    require(success, 'Could not pay the recipient');
    emit TransferWithReference(_to, msg.value, _paymentReference);
  }
}

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

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[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"bytes","name":"paymentReference","type":"bytes"}],"name":"TransferWithReference","type":"event"},{"inputs":[{"internalType":"address payable","name":"_to","type":"address"},{"internalType":"bytes","name":"_paymentReference","type":"bytes"}],"name":"transferWithReference","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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