Im trying to verify an ETH contract, but I complete the etherscan form to and i receive this message:

"Error! Unable to verify source code Missing Constructor Arguments for function JL(uint256 initialSupply, string tokenName, string tokenSymbol)"

My contract was created using https://remix.ethereum.org/ On this link are my smart contract code - JLC.json - JLC.sol https://gist.github.com/5067bbba4b0640e5679d85f8625c198e

Im new on this and im just testing how smart contracts work.

I hope your support guys.



You can use simple online tool to get abi-encoded constructor parameters https://abi.hashex.org. Just paste in abi and enter parameter values. Abi-encoded parameters would be automatically calculated.

Then just copy and paste result into etherscan.io constructor parameters input.

Here is an example of using this tool enter image description here

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to verify your contract you just need the JLC.sol exactly the same when was deployed. by the way, you can see your ABI code in the remix click in on compile > details button

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    I try. But i cannt identify the constructor arguments on ABI code. I have understood that constructor arguments should be something like this: 00000000000000000000000000000000000000000000000000000002540be400000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000044e4154410000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044e41544100000000000000000000000000000000000000000000000000000000 – PoetaKarate Mar 1 '18 at 2:40

You can get the constructor arguments from the deployment transaction. For example, I deployed my contract at https://ropsten.etherscan.io/tx/0x3b0110386e5409a81548beed2020ab3d12f221357905802a2eaf5f7a9d594e52 and last 64 chars of Input Data have the right Constructor Arguments (ABI-encoded).

This rule is valid in my contract because constructor requires just 1 parameter: an address => function Asset(address _SCIssuers) => https://ropsten.etherscan.io/address/0xefb27d9eaa381e958319052dd274c9866f5abc8c#code

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