POST /eth/v1/beacon/blinded_blocks Does Not Work

[rauljordan]

🐞 Bug Report

Description

The POST /eth/v1/beacon/blinded_blocks endpoint in Prysm does not work correctly. It accepts a blinded beacon block and then passes it through the normal submitBlock function that are used for all other block types. This function broadcasts over p2p, processes in the blockchain service, and more. However, a blinded block must be converted to full format before it can be passed through submitBlock. Otherwise, the processing will fail. Moreover, Prysm will try to broadcast the blinded block over p2p which is going to return an error.

Has this worked before in a previous version?

No

🔬 Minimal Reproduction

Submit a blinded beacon block to Prysm via the standard API