> For the complete documentation index, see [llms.txt](/llms.txt).

To verify a smart contract on the Rootstock CLI, the `rsk-cli` verify command allows developers to submit their contract source code and other information to the Rootstock Explorer API.

The `rsk-cli` verify command enables the verification of a smart contract on Rootstock's mainnet or testnet by providing the contract code, address, and other metadata through a JSON file.

Verification on Rootstock's blockchain allows users to confirm that the compiled bytecode on the blockchain matches the source code.

**Mainnet:**

```
  rsk-cli verify --json <path_to_json> --address <address> --name <contract_name> --decodedArgs <arg1> <arg2> ...
```

**Testnet:**

```
rsk-cli verify --testnet --json <path_to_json> --address <address> --name <contract_name> --decodedArgs <arg1> <arg2> ...
```

:::info[]

### Verify Smart Contract Parameters

1. `--json \<path\_to\_json\>`

- This specifies the path to the JSON file that contains all necessary information for verifying the contract. The JSON file should typically contain:
  - Source code of the contract.
  - Compiler version and settings.
  - ABI (Application Binary Interface) data for interacting with the contract.
  - Metadata for libraries if the contract has dependencies.

* **Example:** If your JSON file is named `fb7b3667b850d874bffe750e005d2477.json` and it is usually in the `build-info` folder under the `artifacts folder`, you would use `--json .artifacts/build-info/fb7b3667b850d874bffe750e005d2477.json`.

```text
├── artifacts
│   └── build-info
│       └── fb7b3667b850d874bffe750e00...
├── contracts
│   └── ContactInfo.sol
├── cache
├── files
├── ignition
├── node_modules
├── test
├── typechain-types
├── .gitignore
├── hardhat.config.ts
├── package-lock.json
├── package.json
├── README.md
├── rootstock-wallet.json
└── tsconfig.json
```

2. `--address \<address\>`
   - This is the address of the deployed contract on Rootstock's blockchain (either on mainnet or testnet).
   - The address helps the Rootstock Explorer locate the specific instance of the contract you want to verify.

- **Example:** `--address 0x1234567890abcdef1234567890abcdef12345678`.

3. `--name \<contract\_name\>`
   - This is the name of the smart contract as defined in the source code.
   - This helps the verification system know which contract from the JSON file corresponds to the one deployed at the given address.

- **Example:** If the contract is named ContactInfo, use `--name ContactInfo`.

4. `--decodedArgs \<arg1\> \<arg2\> ...` *(Optional)*
   - decodedArgs is used when the contract’s constructor requires arguments for deployment.
   - These arguments must match the constructor parameters in the source code and are provided in a decoded format.

- **Example:** If the constructor takes an address and a number, you might provide `--decodedArgs 0xabcdef1234567890abcdef1234567890abcdef12 1000`.

5. `--testnet` *(Optional)*
   - This flag specifies that the contract verification should be performed on Rootstock’s testnet instead of mainnet.
   - Testnet is used for testing purposes, so developers often use it to verify contracts in a non-production environment before deploying them on the mainnet.

- **Example:** If verifying on testnet, use `--testnet`.

:::

To verify the same contract on the testnet:

```bash
rsk-cli verify --testnet --json artifacts/build-info/fb7b3667b850d874bffe750e005d2477.json --address 0x4edd891c2e988e6145fe3e418c652ee33ebab9ae --name ContactInfo
```

With constructor arguments:

```bash
rsk-cli verify --testnet --json ./contract.json --address 0x1234567890abcdef1234567890abcdef12345678 --name MyToken --decodedArgs 0xabcdef1234567890abcdef1234567890abcdef12 1000
```

The response below was obtained from the command without a constructor.

```bash
🔧 Initializing verification on testnet...
📄 Reading JSON Standard Input from artifacts/build-info/fb7b3667b850d874bffe750e005d2477.json...
🔎 Verifying contract ContactInfo deployed at 0x4edd891c2e988e6145fe3e418c652ee33ebab9ae..
✔ 🎉 Contract verification request sent!
✔ 📜 Contract verified successfully!
🔗 View on Explorer: https://explorer.testnet.rootstock.io/address/0x4edd891c2e988e6145fe3e418c652ee33ebab9ae
```