Data and code: First empirical survival curve of the Margenau–Hill coherent thermodynamic witness in commercial NISQ hardware

Raw experimental data and source code supporting the manuscript "First Empirical Survival Curve of the Margenau–Hill Coherent Thermodynamic Witness in Commercial NISQ Hardware" by Arturo Cerezo García (2026), submitted to Physical Review X Quantum. The deposit includes: - 11 raw JSON result files from independent jobs executed on IBM ibm_fez (Heron r2 architecture, 156 qubits) on April 21, 2026, comprising the empirical survival curve across six dissipation values gamma in {0.05, 0.10, 0.15, 0.20, 0.25, 0.30}. The empirical survival frontier is localized at gamma_crit in (0.25, 0.30). - 4 raw JSON result files from local AerSimulator validation: B4a-0 TPM blindness (Section III of the manuscript), B4a-1 local-0 MHQ unitary instrument (Section V.A), B4a-1 local-1 MHQ channel (Section V.B), and a local gamma sweep (auxiliary cross-reference). - 11 Python/Qiskit source scripts implementing the experimental protocol, the four mandatory Kraus consistency tests, the MHQ reconstruction routine via Hadamard-test interferometry, and the multinomial bootstrap statistics. All eleven hardware Job IDs are publicly queryable through IBM Quantum's permanent job archive. Single calibration day execution; no error mitigation applied; full statistical disclosure (bootstrap distributions, seeds documented). Diagonal control yields zero negativity in all eleven hardware runs, including in the practical-extinction regime, confirming the coherence-specific origin of the witness signal. The complete README.md included in the deposit provides file-to-Job-ID mapping, hardware execution parameters, JSON file structure, software environment, and reproducibility instructions. Released under CC-BY 4.0.