leviadam

safeContract.getTransactionHash(myToAddress,1000,NULL_HASH,0,0,0,0,NULL_ADDRESS,NULL_ADDRESS,0)
.then(
  (hashedTx) => {
    console.log("Hashed Tx:", hashedTx);
    let binHashedTx = ethers.utils.arrayify(hashedTx);
    console.log("binHashedTx:", binHashedTx);
    wallet.signMessage(binHashedTx)
    .then(
      (signature) => {
        console.log("signature:", signature);

leviadam

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leviadam

pragma solidity ^0.5.4;

/**
 * RealMath: fixed-point math library, based on fractional and integer parts.
 * Using uint256 as real248x8, which isn't in Solidity yet.
 * Internally uses the wider uint256 for some math.
 *
 * Note that for addition, subtraction, and mod (%), you should just use the
 * built-in Solidity operators. Functions for these operations are not provided.
 *

leviadam

pragma solidity ^0.4.21;

library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;