PLENA VRX Standard

One proof grammar.
Controlled upgrade layers.

PlenaProof now names the layers it already needs: simple receipts first, stronger evidence packets when facts matter, public registry and QR verification when recipients must check status, and AI-era trust receipts when machines are involved.

See layers Proof Packets Public Verify

PLENA's VRX stack is now explicit.

PlenaProof uses VRX-1 for basic proof receipts, VRX-2 for evidence packets, VRX-4 for public registry / QR verification, and VRX-5 for AI-era trust receipts.

VRX-1Basic receipt grammar. What was recorded, who issued it, when, type, status, and verification route.VRX-2Evidence packet layer. Hashes, attachment manifests, chain-of-custody, reviewer notes, redaction logs, and export history.VRX-4Interoperability layer. Public registry records, QR verification, issuer references, revocation state, and machine-readable trust metadata.VRX-5AI-era ambiguity layer. AI-use disclosure, human review, synthetic-media flags, model-output warnings, and agent authorization records.

Controlled upgrade rule

VRX-1 remains the foundation. Higher VRX layers do not replace it; they extend the same receipt grammar only when the case needs stronger evidence, public interoperability, or AI-era accountability. This keeps the consumer experience simple while allowing institutions to adopt stronger proof standards.

Layer	PLENA role	Primary buyer/user value	Current d19.131 asset
VRX-1	Basic proof receipt	Someone can read and review the core record without needing PLENA's internal database.	Existing VRX-1 pages and universal receipt schema.
VRX-2	Evidence packet	A scattered case becomes a structured packet with attachment references, custody events, redactions, and export trail.	`vrx2-evidence-packets.html` + `assets/vrx2-evidence-packet.schema.json`.
VRX-4	Public registry / QR verification	A recipient can scan or open a verification route and inspect public-safe receipt status.	`vrx4-public-registry-qr.html` + `assets/vrx4-public-registry-record.schema.json`.
VRX-5	AI-era trust receipt	AI-assisted decisions become reviewable: who used AI, who reviewed it, what risk flags existed, and what appeal route remains.	`vrx5-ai-era-trust-receipts.html` + `assets/vrx5-ai-trust-receipt.schema.json`.

Consumer-friendly

Start with a simple receipt

A user should not need to understand all VRX layers. The interface can ask what happened, gather evidence, and choose the appropriate layer behind the scenes.

Institution-ready

Upgrade only when needed

Institutions can request VRX-2 for evidence-heavy cases, VRX-4 for public verification, and VRX-5 for AI-assisted workflows.

Truth boundary

No fake certification

The standard distinguishes local/static verification, public-safe registry publication, and any future cryptographic or partner-backed confirmation.