There are several ways to get your contract verified on Arthera Testnet explorer.
The easiest way is probably to first flatten your contracts, and paste the flattened code in the explorer. if you're using Hardhat, you can use the following command (it's built-in):
npx hardhat flatten
Copy your code, then in the explorer, search for your contract address, click the
Verify and Publish button and paste your code there.
Sourcify will be fully supported in the coming days.
Latest update: September 19, 2023