Concept

frozen criterion (pre-registration)

Before running an experiment, the pass/fail rule is written down and fingerprinted, so it cannot be bent to fit the result afterwards.

From the record

In technical terms: Criterion file with the decision rule, sets, n, seeds, judge and (since 2026-10-10) a Power block, hashed with sha256 before any deciding run; changes only as dated addenda. 65/65 hashes verified on 2026-10-10; an outside critic matched 16 of 17 on 2026-10-16.

Frozen pass/fail criteria were re-checked against their sha256 fingerprints.Frozen pass/fail criteria were re-checked against their sha256 fingerprints.65/65 criterion hashes verified (2026-10-10); an outside critic found 16 of 17 matching (2026-10-16), and 19 of 20 in a spot-check (1 hashing-convention mismatch, 1 criterion without a sidecar)n65 / 17 / 20Date2026-10-16Kinda record, not a measurement (set, status, judge, seeds: not recorded)CaveatSome early freezes are attested by file mtime only.Sourcenot in the public repositories yetOpen the data file