WITNESS-1: Quantum-Sourced Authorization Nonces with Verifiable Provenance — Preregistered Execution Record

WITNESS-1 is a preregistered quantum experiment testing whether a ProofRecord whose challenge nonce is derived from measured QPU output can be (a) verified end-to-end against the IBM Quantum provider's job record, and (b) detected as forged when the nonce, job ID, or counts are substituted — under the tested construction. Three preregistered cases: W1-C1 (honest verification), W1-C2 (substitution/tamper detection, 3 sub-trials), W1-C3 (cross-context replay using ARK-457 logic). Overall verdict: PASS. Backend: ibm_fez (156-qubit Heron r2). Job ID: d9dgp6kjeosc73fhigsg. Shots: 4,000. Nonce: 2a06cecc238ddcf1e8c2774df2074d9bd3d3fdbc7b1a3e6436281648aadad0ec. MANDATORY SCOPE DISCLAIMER: Results apply within the tested circuit model, backend, qubits, calibration, shot counts, software harnesses, and stated experimental conditions. This is an experimental evidence record, not a universal security proof or production certification.