Options
Otterscan can be customized in many different ways.
If your chain is an Optimism L2 Superchain, you can wire that Otterscan instance with an L1 one.
Price resolvers can be customized as well.
If you are running Otterscan against a non-standard chain, but you are sure Erigon can run it, you can explicitly specify the configuration.
In case you are running your own Sourcify instance, that's configurable as well.