Verify core claim signature onchain

[texasspurstar]

Hi.

I have a case where verification of the zkp is not desirable as it takes 6-9s to do the ZKP proof based on the VC. However in my case I am ok to send the core claim to the verifier. However I need an onchain verifier and it does not seem that verification of the babyjubjub signature onchain (or I would rather say, verifying the core claim onchain) is part of the solution at the moment.

Is it possible to add this feature?

[vmidyllic]

Proof generation must not take 6-9 seconds, can you share schema that you use (JSON schema and ld context) and example of proof request.
Regarding disclosure of core claim - if you talk that you want to share core claim representation of w3c to onchain veriifer it is possible to verify inclusion to issuer state with MTP, but you need claims tree root and state info check.
So, instead of bjj verifiсation onchain I suggest creating merkle tree proof for VC and it's verification in contract (in case you don't generate proof, because standard validators can check that) .

You still can try to use third party contracts to verify bn254 curve signature. But verification of proof it is not only signature verification, but checking revocation of issuer signing key, expiration etc.

[texasspurstar]

Ok. thanks