Offline Air-Gapped Software & Document Entitlement Verification via Canonical RFC 8785 JSON Manifests and Deterministic Ed25519 Signatures

Sovereign defense enclaves, Sensitive Compartmented Information Facilities (SCIFs), nuclear/grid operational technology (OT) networks governed by NIST SP 800-82 Rev. 3 and IEC 62443, and tier-one financial audit rooms strictly prohibit outbound internet 'call-home' license pings, cloud OCSP revocation lookups, and external NTP synchronization. Conventional offline entitlement files fail across heterogeneous runtimes due to non-canonical JSON serialization drift (whitespace, key-order, and IEEE-754 exponent formatting variances breaking signature verification), permissive Ed25519 verification implementations accepting non-canonical scalar malleability (S' = S + L < 2^256) or small-order torsion points, and trivial BIOS/CMOS system-clock rollback attacks reviving expired time-bounded leases. This technical note formalizes a zero-call-home cryptographic capability-lease architecture uniting RFC 8785 JSON Canonicalization Scheme (JCS), strict RFC 8032 § 5.1.7 / FIPS 186-5 cofactored Ed25519 verification, and an SMT-verified monotonic high-water-mark (HWM) anti-rollback state automaton. Reference Verification Implementation: https://titandrm.com (Maintained by TITAN Capital Forensics LLC, Albuquerque, New Mexico, USA; D-U-N-S: 33-195-8002; UNGM: #1299169). Zero source code or executable software distributed.