# Torsion Fold

> A bounded method for locating semantic distortion between a source artifact and a transformed artifact.

Torsion Fold defines seven watched invariants: identity, quantity, time, modality, negation, authority, and provenance.

It emits five claim states: PRESERVED, SHIFTED, DROPPED, INTRODUCED, and UNVERIFIABLE.

Hard boundary: a torsion report is a diagnostic comparison, not a truth determination.

Method JSON: https://torsionfold.com/method.json
Benchmarks JSON: https://torsionfold.com/benchmarks.json
Reference implementation: https://torsionscan.com/