issuerInfo
ETSI TS 119 472-3 V1.1.1, 4.2.3: REQUIRED in the signed metadata of PID and attestation providers of the EUDI Wallet ecosystem (ISS-MDATA-REG_CERT-4.2.3-01, -02). Attestations about the provider, structured as verifier_info of OpenID4VP, one of them its registration certificate (registration_cert, -04 as adapted by CIR (EU) 2026/1731, Annex XI).