Conduit comes with a blockscout instance, and you can verify against it with the url

“https://explorer-[your_network_id].t.conduit.xyz/api\?” (See this foundry issue for why you need to include \\? https://github.com/foundry-rs/foundry/issues/5160#issuecomment-1631555377)

forge verify-contract <address> <contract> --verifier=blockscout --verifier-url=https://explorer-[your_network_id].t.conduit.xyz/api\\?