NanoThermDB Audit Benchmark v1.0

NanoThermDB Audit Benchmark v1.0 is a curated, source-aware benchmark for experimental nanofluid thermal-hydraulic studies. The release contains a 105-record audited archive, a frozen 80-record primary empirical benchmark, matched-condition performance evaluation criterion inputs, complete-paper holdout folds, source-held-out baseline results, row-split leakage diagnostics, integrity checks, extraction documentation, and one-command reproduction scripts. The benchmark is designed for transparent evidence synthesis and leakage-aware model assessment. It distinguishes primary empirical records, evidence-synthesis-only records, and outcome-only records retained for provenance. Random row splits are included only as a diagnostic and are not presented as transfer-to-new-paper performance. The accompanying manuscript documents the evidence standard, the matched-condition rule, and the source-level analysis. The experimental operating temperatures in the frozen primary benchmark range from 20 to 60 degrees C. This supports low-temperature heat-transfer analysis but is not a field-scale geothermal dataset.