Local file integrity
A fingerprint for your work.
Calculate SHA-256 from a file or text, then compare it to a known fingerprint. Your content stays on your device.
Choose an input
SHA-256 detects differences in bytes. A matching hash alone does not prove authorship, registration, authenticity or legal ownership.
Know exactly what matches.
Select a file or text to create its fingerprint. No account or cloud upload is needed.
SHA-256 fingerprint
Computed locallyPaste an expected hash to compare the bytes.
For a separate provenance registration, use your own ProofX account ↗. This local result is not a ProofX registration or certificate. Opening ProofX is optional and takes you to an external service.