How can a verifier see the data of a credential?

Sometimes a verifier might want to know a specific field, so they can ask the wallet holder not to hide a specific attribute, but in the end the verifier won’t know anything unless the wallet holder lets them.

When creating a Proof, it can either create a proof that allows to present all the credential fields or it can generate a selective proof (contains only a subset of the fields). Take a look at both examples below:

let proof = await trinsic.credential().createProof(
    CreateProofRequest.fromPartial({
        documentJson: issueResponse.documentJson,
        itemId: insertItemResponse.itemId,
    }),
);

let selectiveProof = await trinsic.credential().createProof(
    CreateProofRequest.fromPartial({
        documentJson: issueResponse.documentJson,
        itemId: insertItemResponse.itemId,
        revealTemplate: {
            templateAttributes: ["firstName", "lastName"],
        },
    }),
);

You can find more information about proofs here.