Optional ReadonlyaccessThe access token the proof binds through ath; absent leaves ath out.
ReadonlyhtmThe HTTP method (GET for the gateway).
ReadonlyhtuThe target URL; it is normalized by normalizeHtu.
Optional ReadonlynonceThe newest server nonce, if any.
Optional ReadonlynowThe wall time of iat, Unix milliseconds (default Date.now()).
The inputs of one DPoP proof.