Record + Seal + Verify

One offline studio for Record Moment, Seal File, and Verify File. When installed as a PWA (Add to Home Screen), it runs fully offline.

Offline-first Signature v4 Groth16 runtime No account required

Record Moment

Creates a sealed PNG record artifact from current time using the same offline record primitives.

Claim text (optional)

0/180

Seals files in their original format (PNG/PDF/SVG/JSON/trailer-safe) with verifiable Receiz proof embedding.

Drop a file or tap to upload No file selected.

Run deterministic offline verification from artifact bytes in the same studio.

Drop a file or tap to upload Works with single files and folder uploads.

No file selected.

Waiting for a file

Load file bytes, then run verification.

Show decoded proof bundle

(none)

Show text chunks

(none)

Runtime Status

Ready.

Offline install

Install this studio as a PWA (Add to Home Screen) for full offline Record, Seal, and Verify on-device.