> ## Documentation Index > Fetch the complete documentation index at: https://docs.blockscout.com/llms.txt > Use this file to discover all available pages before exploring further. # Sourcify Plugin For Hardhat Similar to the [hardhat verification plugin](/devs/verification/hardhat-verification-plugin), this plugin submits the contract source and other info of all deployed contracts to Sourcify. ### Verify Similar to the verification approach described in the [hardhat verification plugin](/devs/verification/hardhat-verification-plugin), you can verify the contract source code in Sourcify as well by setting the following in the hardhat config file: ```javascript theme={null} // ... const config: HardhatUserConfig = { // ... sourcify: { enabled: true }, // ... }; export default config; ``` ```sh theme={null} npx hardhat verify --network DEPLOYED_CONTRACT_ADDRESS "Constructor argument 1" ``` Optimism Sepolia example: ```sh theme={null} > npx hardhat verify --network optimism-sepolia 0xCD562a6426b474390A9E7e554b9B4f9f62Ea38Ba 1234 Successfully submitted source code for contract contracts/Lock.sol:Lock at 0xCD562a6426b474390A9E7e554b9B4f9f62Ea38Ba for verification on the block explorer. Waiting for verification result... Successfully verified contract Lock on the block explorer. https://optimism-sepolia.blockscout.com/address/0xCD562a6426b474390A9E7e554b9B4f9f62Ea38Ba#code Successfully verified contract Lock on Sourcify. https://repo.sourcify.dev/contracts/full_match/11155420/0xCD562a6426b474390A9E7e554b9B4f9f62Ea38Ba/ ``` ## Confirm Verification on Blockscout Go to your BlockScout instance and paste the contract address into the search bar. Scroll down to see verified status. A green checkmark ✅ means the contract is verified. If your screen size is limited, you may need to click the 3 dots to view and click through to the contract. Scroll down to see and interact with the contract code.