Glossary

Term	Meaning
x401	Identity proof protocol (401 Proof-Required).
x402	Payment protocol (402 Payment Required).
VC / VP	Verifiable Credential / Verifiable Presentation.
DID / ZID	Decentralised Identifier (Zetrix variant).
DCQL	The verifier's claim query language.
BBS+	Signature scheme enabling selective disclosure.
Bulletproof	Zero-knowledge range proof.
Holder binding	Ed25519 signature over the verifier nonce.
HSM	Hardware-grade key store.
Facilitator	x402 settlement service.
JMYR	A ZTP20 asset used for settlement.