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isSpent function

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poma 2019-07-15 19:15:06 +03:00
parent eb75bab81b
commit 8657bc8b82
1 changed files with 4 additions and 0 deletions
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4
contracts/Mixer.sol
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@ -69,4 +69,8 @@ contract Mixer is MerkleTreeWithHistory {
} }
emit Withdraw(receiver, nullifier, fee); emit Withdraw(receiver, nullifier, fee);
} }
function isSpent(uint256 nullifier) public view returns(bool) {
return nullifiers[nullifier];
}
} }