Smart Contract Verification

A quick guide on how to verify your contracts on Harmony.
​https://explorer.harmony.one/verifycontract​
Right now, we support verification only for one single solidity file - therefore, before deployment and verification, you will need to flatten all solidity sources to one file.
1. Flatten your solidity files (only for multiple files)
To flatten your solidity files we recommended to use https://www.npmjs.com/package/truffle-flattener​
npm install truffle-flattener -g
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truffle-flattener <solidity-files>
Or you can use any other flattener lib
2. Deploy contract to Harmony
To more easy verification we recommend to deploy contract with Harmony Remix https://docs.harmony.one/home/developers/deploying-on-harmony/using-remix/deployment-using-remix​
3. Verify contract
You can verify your contract here https://explorer.harmony.one/verifycontract​
Important to use correct params (the same like on deploy):
Contract address
Contract name
Compiler version
Optimizer
Chain Type (mainnet or testnet)
Sources
Imported libs
Then click Submit button
If all parameters are correct - you should to see Success message, or Error if bytecodes don't equal
On Success case - you contract will verify and you will see all contract details on contract explorer page
4. Verify contract with constructor arguments (for contracts that were created with constructor parameters)
​https://docs.soliditylang.org/en/develop/abi-spec.html​
To get ABI-encoded constructor arguments you can ue this service: https://abi.hashex.org​
Example for Harmony Remix:
1 - click ABI to copy it 
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2 - paste ABI to https://abi.hashex.org form and click parse 
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3 - paste your constuctor arguments and click Copy 
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4 - paste encoded constructor arguments to verify form field 
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DaVinci SDK

Last modified 1yr ago