Starling: ProofMode + Signal Prototype (for SCMP)

Goal: Prototype a workflow that utilizes ProofMode to collect metadata and Signal to deliver authenticated data bundles.

Important information

Here are the Starling numbers on Signal and their associated Dropbox folders. Please add the numbers to HTC phone contact list.

Name Signal number Description Dropbox (for C2PA photos)
Starling Lab +1 289-999-0286 For production use folder
Starling Lab (staging) +1 647-478-8566 For testing folder

Download links for Android apps.

Android app Link
ProofMode https://play.google.com/store/apps/details?id=org.witness.proofmode
Signal https://play.google.com/store/apps/details?id=org.thoughtcrime.securesms

Please uninstall the current version of ProofMode on the phone then download this from Google Play.

Signal number to photojournalist mapping: https://hackmd.io/2mhksukgSRyoX91B3P7H3A?view

Instructions

  1. Install ProofMode and Signal on an Android phone.

    • We tested the HTC Exodus 1s, so that's preferred, but you'll need a SIM card to get Signal to work.
    • The version we tested is 0.0.15-RC-1 on Google Play (this is the current version you'll find)
    • Please use ProofMode 0.0.15-BETA-3 instead of the one in Google Play (this contains a fix to a bug that seems to prevent direct sharing from SD card)

  2. In ProofMode, enable all the features.

    Screenshot_20220427-013509

  3. Load an SD card with professional camera photos into the phone.

  4. Select a photo (or photos) from phone's Photo Gallery and share to ProofMode.

    Screenshot_20220427-013538

    Screenshot_20220427-013642

  5. Press GENERATE PROOF then SHARE ROBUST. Note that this step should occur close in time and place to where photos are captured.

    Screenshot_20220427-013659

    Screenshot_20220427-013709

  6. Find the generated ZIP, select Signal and send to Starling Lab's number.

Batch upload of 16 photos from Canon XSi (76 MB zip)

You must use ProofMode 0.0.15-BETA-3 instead of the one in Google Play.

  1. Once you put the microSD into the HTC Exodus 1s, the photos will show up in the Photos app.

  2. Select photos and Share Proof.

  3. Select Actual size.

  4. Select SHARE ROBUST.

  5. Share to the Starling number via Signal.

  6. Send the ProofMode ZIP. Watch for the 💾 that indicates acceptance.

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