pqcsettle.com & .eth | PQC Settlement Identity

Settlement finality depends entirely on cryptographic integrity — the guarantee that a signed settlement instruction cannot be forged, and that a completed transaction cannot be retroactively altered. BIS Papers No. 158 frames the quantum threat to this guarantee precisely: financial services are deployed extensively on a global and cross-border basis, exceedingly digital and web-based, and heavily reliant on encrypted digital transactions — meaning the interconnectedness of domestic and global financial systems mandates a coordinated, proactive transition plan by central banks, supervisory authorities, and financial institutions, since any inadequately protected actor becomes a weak link affecting the security of the entire system.

This is no longer a single-institution concern. The G7 Cyber Expert Group, co-chaired by the US Treasury and the Bank of England, released a coordinated public roadmap on January 12, 2026. The Basel Committee on Banking Supervision has issued parallel guidance for banks. The European Central Bank is developing PQC readiness requirements for systemically important institutions. SWIFT has announced its own quantum-safe migration roadmap for the interbank messaging network connecting over 11,000 institutions. Five independent, high-level financial authorities addressing the same transition within the same year confirms that quantum-resistant settlement infrastructure has moved from theoretical research to active institutional priority.

pqcsettle.com & .eth is the Convergence Identity for this transition — the institutional namespace connecting the cryptographic agility BIS, Basel, ECB, and SWIFT all demand to the documented, examinable settlement infrastructure every institution must demonstrate.

Why BIS and the G7 Treat Quantum-Safe Settlement as a Coordinated Financial Stability Issue

BIS Papers No. 158 identifies the two primary alternatives to discontinued asymmetric cryptography as Quantum Key Distribution and Post-Quantum Cryptography — noting that QKD remains experimental while PQC is the near-term viable approach, with NIST having already stated that RSA will be deprecated after 2030 and disallowed after 2035. The paper explicitly cautions against treating this as simple algorithm replacement: ensuring continued security and resilience of the global financial system requires cryptographic agility, defense in depth, hybrid models, and phased migration.

The “Harvest Now, Decrypt Later” threat is the specific risk driving urgency for settlement infrastructure: adversaries can collect encrypted settlement data today and decrypt it once quantum capabilities mature, meaning settlement records created now may already be vulnerable regardless of when a cryptographically relevant quantum computer becomes operational. The MCI intent identity for the broader authorization documentation framework that pqcsettle’s transition must integrate with is documented at mciintent.com & .eth.

NIST’s finalized standards — ML-KEM for key establishment, ML-DSA and SLH-DSA for digital signatures — provide the concrete algorithmic foundation that settlement infrastructure must migrate toward, with NIST recommending hybrid deployments combining traditional and post-quantum algorithms during the transition so that security holds even if one approach is later compromised. The DLT settlement categorical namespace anchoring the broader settlement infrastructure within which PQC migration occurs is documented at dltsettle.com & .eth.

How PQC Settlement Documentation Bridges Cryptographic Migration and Settlement Finality

Every institution executing settlement through cryptographically secured infrastructure faces the same emerging documentation requirement: demonstrable proof that settlement signing and finality mechanisms have transitioned to, or are actively transitioning toward, quantum-resistant algorithms — and that this transition follows the cryptographic agility principles BIS, Basel, and the G7 Cyber Expert Group all recommend.

pqcsettle.com is the institutional Web2 portal identity — the compliance interface and legal documentation anchor for any institution demonstrating quantum-readiness in its settlement infrastructure to central banks, supervisory authorities, and counterparties. pqcsettle.eth is the on-chain complement — the ENS-resolvable endpoint where hybrid cryptography attestations, algorithm transition milestones, and quantum-resistant settlement finality proofs are recorded as immutable entries.

Cryptographic agility — the ability to swap algorithms quickly without rearchitecting core systems — is the design principle BIS identifies as essential, since a financial institution’s settlement infrastructure may need to transition through multiple cryptographic generations before the quantum threat fully materializes. pqcsettle.eth provides the on-chain attestation layer documenting exactly which algorithm generation secured a given settlement event, creating an auditable migration history rather than a single point-in-time claim. The RLN settlement identity for the multi-bank settlement infrastructure that must coordinate its own PQC migration timeline across participants is documented at rlnsettle.com & .eth.

The PQC Settlement Ecosystem — From Authorization to Categorical Settlement Infrastructure

pqcsettle is the quantum-readiness settlement identity anchoring this emerging compliance category. It connects directly to dltsettle.com & .eth as the categorical DLT settlement namespace within which PQC migration must occur across all settlement modalities, and to mciintent.com & .eth as the authorization documentation layer that quantum-resistant settlement instructions must satisfy.

Beyond this immediate cluster, pqcsettle integrates with rlnsettle.com & .eth as the multi-bank settlement standard requiring coordinated PQC migration across RLN participants, dltinterop.com & .eth as the cross-network interoperability standard that must remain consistent as different platforms migrate to quantum-resistant algorithms at different paces, and mcicustody.com & .eth as the qualified custody identity whose underlying key management infrastructure faces the most direct quantum exposure.

STRATEGIC CONSTELLATIONS & BUNDLE POTENTIAL

Bundle 1, “The PQC Financial Infrastructure Core”, für Zentralbanken und Standards-Bodies. Target: BIS, ECB, SWIFT, Basel Committee. Domains: pqcsettle.com/.eth + dltsettle.com/.eth + dltinterop.com/.eth. Complete PQC settlement namespace, quantum-readiness identity, categorical DLT settlement, and cross-network interoperability.

Bundle 2, “The Quantum-Safe Custody and Authorization Stack”, für Custody-Anbieter und MCIs. Target: Fireblocks, BitGo, Anchorage Digital. Domains: pqcsettle.com/.eth + mciintent.com/.eth + mcicustody.com/.eth. Complete quantum-safe custody namespace, settlement documentation, authorization layer, and custody standard.

Bundle 3, “The Full PQC and DLT Infrastructure Namespace”, für Strategic Acquirers. Domains: pqcsettle.com/.eth + dltsettle.com/.eth + rlnsettle.com/.eth + dltinterop.com/.eth + mcicustody.com/.eth. The complete quantum-readiness settlement namespace. This package exists exactly once.