Verify a contract

This guide will help you verify a smart contract on Taiko.

Prerequisites

You have a contract deployed on Taiko and the source code available.

Taiko Alethia

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Verify a contract with Foundry

Replace the contract address and filepath to contract below, and then execute in terminal to verify your contract.

forge verify-contract 0x526317252e346978869d178081dA2cd10ac8b56D src/Counter.sol:Counter \
  --verifier-url https://blockscoutapi.mainnet.taiko.xyz/api\? \
  --verifier blockscout

It’s also possible to verify the contract on Taikoscan through Etherscan v2 API as follows:

forge verify-contract 0x526317252e346978869d178081dA2cd10ac8b56D src/Counter.sol:Counter \
  --chain 167000 \
  --verifier custom \
  --verifier-url https://api.etherscan.io/v2/api?chainid=167000&apikey={YOUR_API_KEY}

Taiko Hoodi

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Verify a contract with Foundry

Replace the contract address and filepath to contract below, and then execute in terminal to verify your contract.

forge verify-contract 0x526317252e346978869d178081dA2cd10ac8b56D src/Counter.sol:Counter \
  --verifier-url https://blockscoutapi.hoodi.taiko.xyz/api\? \
  --verifier blockscout

Note

For some users the above command does not work on Blockscout. You can also try passing a different --verifier-url:

--verifier-url https://blockscoutapi.hoodi.taiko.xyz/api?module=contract&action=verify

Verify a contract with Hardhat or other alternatives

Check out the Blockscout docs here or Hardhat docs here!