pqcinterop.com & .eth | PQC Interoperability Identity

Quantum-safe certification is converging on a similar timeline across multiple jurisdictions — but not on a single, harmonized standard. France’s ANSSI ends certification of non-quantum-safe products from 2027. The US requires approved quantum-resistant algorithms for national security systems by January 1, 2027. The EU’s NIS Cooperation Group urges member states to begin transition by end-2026. Each framework specifies its own approved algorithm suite, its own certification process, and its own enforcement timeline — and none of the three formally recognizes another’s certification as automatically equivalent.

This creates a precise interoperability gap for any institution operating settlement, custody, or messaging infrastructure across more than one of these jurisdictions simultaneously. A financial institution whose cryptographic infrastructure is certified under ANSSI’s requirements for its French operations cannot assume that certification satisfies NIST’s FIPS 203/204/205 requirements for its US operations, or whatever specific algorithm requirements emerge under the EU’s evolving framework. The BIS cryptographic agility principle — defense in depth, hybrid models, phased migration — becomes substantially more complex when the destination state itself varies by jurisdiction.

pqcinterop.com & .eth is the Convergence Identity for this cross-jurisdictional standard — the institutional namespace connecting the documented algorithm mapping every multi-jurisdictional institution must produce to demonstrate compliance across ANSSI, NIST, and EU requirements simultaneously.

Why Three Converging Deadlines Without a Single Standard Creates the Interoperability Problem

BIS Papers No. 158 frames the quantum transition as inherently cross-border: financial services are deployed extensively on a global basis, and the interconnectedness of domestic and global financial systems mandates coordinated action — yet ANSSI, the US national security framework, and the EU’s NIS Cooperation Group are each independently defining their own certification regimes on overlapping but not identical timelines. This is precisely the scenario BIS warns against: an institution that satisfies one jurisdiction’s requirement while remaining unverified under another’s becomes the weak link affecting the security of the broader interconnected system.

Fanny Bouton, head of quantum at OVHcloud, described the resulting compliance burden directly: as a French and European player, the company faces the dual challenge of auditing products and securing data to meet ANSSI’s requirements while simultaneously aligning with EU Commission and US NIST requirements — three separate standards bodies, three separate evaluation processes. The PQC settlement identity for the categorical quantum-resistant settlement standard within which this interoperability gap must be resolved is documented at pqcsettle.com & .eth.

For institutions operating cross-border settlement infrastructure — exactly the kind of system BIS, SWIFT, and the Basel Committee have all flagged for quantum-readiness — this interoperability gap is not a future contingency but a present compliance question wherever transactions cross jurisdictional lines. The PQC intent identity for the documented pre-migration authorization that must account for multi-jurisdictional certification requirements is documented at pqcintent.com & .eth.

How PQC Interoperability Documentation Bridges Divergent National Certification Regimes

Every institution operating across France, the US, and the EU simultaneously faces the same documentation requirement: a verifiable mapping showing which cryptographic algorithm secures a given transaction, certified under which jurisdiction’s framework, and how that certification relates to the requirements of every other jurisdiction the transaction touches.

pqcinterop.com is the institutional Web2 portal identity — the compliance interface and legal documentation anchor for any institution demonstrating that its quantum-safe infrastructure satisfies ANSSI, NIST, and emerging EU requirements simultaneously, rather than only the single jurisdiction where headquarters happen to sit. pqcinterop.eth is the on-chain complement — the ENS-resolvable endpoint where multi-standard algorithm attestations are recorded as immutable entries, directly addressable by cross-border settlement smart contracts that must verify quantum-safe compliance across multiple certification regimes at once.

This cross-jurisdictional attestation is what distinguishes pqcinterop from single-framework PQC documentation: rather than proving compliance with one national standard, pqcinterop.eth maintains the auditable record of how a given cryptographic implementation maps to the requirements of every jurisdiction a transaction crosses. The PQC custody identity for the key management standard most directly exposed to quantum risk across these jurisdictions is documented at pqccustody.com & .eth.

STRATEGIC CONSTELLATIONS & BUNDLE POTENTIAL

Bundle 1, “The Cross-Jurisdictional PQC Core”, für multinationale Finanzinstitute. Target: Banken mit France/US/EU-Präsenz, SWIFT, global tätige CSDs. Domains: pqcinterop.com/.eth + pqcsettle.com/.eth + pqcintent.com/.eth. Complete PQC-Interop-Namespace, Cross-Border-Mapping, kategorisches Settlement, und Pre-Migration-Authorization.

Bundle 2, “The PQC Key Management Stack”, für Custody-Anbieter. Target: Fireblocks, BitGo, Anchorage Digital mit europäischer Präsenz. Domains: pqcinterop.com/.eth + pqccustody.com/.eth + dltinterop.com/.eth. Complete Key-Management-Namespace, Cross-Border-Standard, Custody-Identität, und DLT-Interoperabilität.

Bundle 3, “The Full PQC Infrastructure Namespace”, für Strategic Acquirers. Domains: pqcinterop.com/.eth + pqcsettle.com/.eth + pqcintent.com/.eth + pqccustody.com/.eth + pqcsettlement.com. The complete PillarsX PQC namespace. This package exists exactly once.