Base is not in production on Infura. For now Base is only available privately to a limited number of customers. Production support is limited to severity 2 and 3 only. If you would like access please submit a request to
firstname.lastname@example.org and we will assess if your request can be accommodated at this time.
The Base network provides seamless Coinbase integrations, easy fiat onramps, and access to 100m+ users and $100B+ assets in the Coinbase ecosystem. See the official Base documentation for more information.