⚗ Acta

A laboratory notebook for the field — every photo, reading and note hash-chained and timestamped to Bitcoin.

Download for Android  ·  85 MB
v0.4.0 · Android 7.0+ · free · by Soteria Dynamics

What it does

Acta is a contemporaneous research log. In the field — a bush camp, a farm, a forest hive — you snap a photo, and Acta folds its SHA-256, your GPS location and a caption into a per-experiment hash chain. Log a quick entry with hours, or read back the timeline. Every record is tamper-evident and anchored to a Bitcoin block, so it stands as dated, un-fakeable evidence — SR&ED substantiation, IP provenance, or just data you can trust.

Create a free Acta account at acta.soteriacovenant.org. To sign the app in, open Connect a device there and enter the 6-character pairing code — no password typed on your phone (or use email + password).

Install

  1. Tap Download for Android above.
  2. Open the downloaded .apk; if prompted, allow installs from your browser (Settings → “Install unknown apps”).
  3. Open Acta, tap “Pair with a code”, and enter the code from Connect a device on the web.

Verify the download

SHA-256 of the APK (acta.apk.sha256):

3d17b7cbd892c2fab9ba938d25e227eea1e7ecb47571d76c77242edb268a9daa