H33-74 for PCI-DSS

Payment Card Industry Data Security Standard v4.0 (Global, organizations storing, processing, or transmitting cardholder data) places obligations on organizations to demonstrate that operational controls were in place, that automated decisions were governed, and that an audit trail exists for regulatory inquiry. Most existing audit-log architectures meet the letter of the requirement but produce evidence tied to the operator's current systems. If those systems change or fail, the evidence weakens.

What PCI-DSS requires

PCI-DSS Requirements 10 (log and monitor all access to network resources and cardholder data) and 11 (regularly test security systems and processes) require persistent, tamper-evident audit trails of access to the cardholder data environment. Requirement 10.7 requires log retention for at least one year with three months immediately available. Requirement 12 requires documented and verifiable security policy and procedure evidence.

Why H33-74 fits

PCI-DSS audit obligations require evidence that log integrity has not been tampered with, including in the case of insider compromise of the logging infrastructure itself. H33-74 produces each access event and each policy decision as a cryptographically signed proof that an attacker cannot forge without breaking three independent post-quantum signature families. The QSA can verify any individual proof directly without relying on the operator's logging stack remaining un-compromised.

Control mapping

What this changes for the audit team

• Each control's evidence is a cryptographic object the auditor verifies directly, not a log entry the auditor trusts because the operator says so.
• The audit horizon extends beyond the operator's current systems, vendors, or chain choices.
• Regulator inquiry years after a decision can be answered with the original PQ-signed proof rather than reconstructed from operator memory.
• Independent third-party verification works without the operator's infrastructure being available.

None of this redefines the primitive: H33-74 produces/anchors the same portable 74-byte post-quantum receipt for PCI-DSS that it does for any other use, and it produces evidence that supports PCI-DSS requirements rather than making an organization compliant on its own. How anyone checks a receipt — recompute the commitment, verify the signatures, confirm the anchor, with H33 not in the loop — is described under Verification.

Related regulatory crosswalks