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Features

A complete evidence record — without turning every photo into a form.

Capture is the product. Organization is optional. Proof is independent of the workspace that took the picture.

Get the appHow it works

Documentation first

Standalone evidence

A signed photo does not need a project, task, or account on the recipient side.

Optional filing

Add notes, location, tags, tasks, and projects when they help the job.

Hardware-backed signing

Keys are generated in Android Keystore. See the trust model for the exact guarantees.

Learn more

Public verification

The original JPEG can be checked on the public verifier.

Inside a record

Anatomy of an evidence record

Plain language for what is in the file you share.

  1. 01

    The photograph

    The original JPEG bytes from capture.

  2. 02

    Optional notes and location

    Only what you chose to attach on the device.

  3. 03

    The signature

    An ECDSA signature over the hashed original bytes.

  4. 04

    Attestation material

    A certificate chain used during verification — not as the trust anchor.

  5. 05

    The independent check

    A verifier pin-checks Google hardware roots by SPKI and reports a human result.

See it in a real workflow

Use cases show property, construction, insurance, and infrastructure without invented metrics.

Use casesVerify a photo