Pillar VII
Infrastructure
Seven ecosystem layers, and five infrastructure functions, together compose the public infrastructure of the Quick Response Code.
The Quick Response Code is supported by an ecosystem of layered infrastructure: QR Codex as the registry and operational backbone; QR Registered as the registration authorization layer; QR Certified as the certification layer; QR Compliance as the compliance evaluation layer; QR Protocol as the governance layer; QR Identity as the identity binding layer; and QRA2Z as the end-to-end utilization layer.
Each ecosystem layer is documented at its own page below. Five cross-cutting infrastructure functions — registry, lookup, dossier, verification, identity systems — are documented alongside them.
Pages in this section
QR Codex
The registry and operational backbone layer of the Quick Response Code ecosystem.
QR Registered
The registration authorization layer of the Quick Response Code ecosystem.
QR Certified
The certification layer of the Quick Response Code ecosystem.
QR Compliance
The compliance evaluation layer of the Quick Response Code ecosystem.
QR Protocol
The governance, rules, and versioning layer of the Quick Response Code ecosystem.
QR Identity
The identity binding layer of the Quick Response Code ecosystem.
QRA2Z
The end-to-end utilization layer of the Quick Response Code ecosystem.
Registry
The registry function — issuance, mutation under audit, and append-only event history of records.
Lookup
The public lookup function — read surface over the registry.
Dossier
The dossier model — dual-linked ownership, immutable core identity, append-only event history.
Verification
The verification function — confirmation of record existence, status, and binding.
Identity systems
Identity-systems reference for the binding of issuer, holder, and record.