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
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:
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