Verifies a biscuit against the AS's public key and checks it against the presentation context.
the presented token value
{ publicKey }, an Ed25519 node KeyObject
{ publicKey }
Optional
the presentation to check the token against
{ ok: true, model, attenuated }, or a refusal
{ ok: true, model, attenuated }
Verifies a biscuit against the AS's public key and checks it against the presentation context.