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Cardano enviroments

Production (mainnet)

Usage: Live Production. Only gets official mainnet releases.

Explorer: https://cexplorer.io/

Preview testnet

Usage: Testing release candidates and mainnet releases. Leads mainnet hard forks by at least 4 weeks.

Explorer: https://preview.cexplorer.io/

Pre-production testnet

Usage: Testing release candidates and mainnet releases. Forks at approximately same time as mainnet (within an epoch of each other).

Explorer: https://preprod.cexplorer.io/

Old testnet (legacy)

Note that the Cardano testnet is no longer recommended for new functionality testing. It only supports nodes v.1.35.0, v.1.35.1, and v.1.35.2. The testnet will be fully deprecated after Vasil mainnet release.

Explorer: https://testnet.cexplorer.io/

Configuration files for cardano-node are available in official documentation about enviroments: https://github.com/input-output-hk/cardano-world/blob/master/docs/environments.md