Support for fetching historical proofs for finalised blocks

[TheMj0ln1r]

Problem description

Lodestar prover endpoints are generating historical proofs for optimistic blocks but not for the Finalised blocks.

Solution description

Should be able to generate historical proofs for the older blocks(finalised).

Additional context

No response

[nazarhussain]

@TheMj0ln1r Would you clarify which element you are referring to. The prover which is our lightclient proxy client for web3 providers. Orr the proof api a.k.a /eth/v0/beacon/proof/block/{block_id}?

[TheMj0ln1r]

Yes @nazarhussain , issue is with getStateProof in the ApiClient of @lodestar/api. There if we pass a state_root of an optimistic block the proof is generating but not if we pass a finalised block. I've tested that getStateProof is generating proofs for last 62 blocks not more than that.