Prove your photos and videos are real. In a world of deepfakes and AI manipulation, CDA2 gives your photos and videos a unique digital fingerprint — so anyone with the app can verify they're authentic and unedited.

🔒 YOUR PRIVACY COMES FIRST

Your photos and videos NEVER leave your device unless you share them.

When you capture media, CDA2 generates a SHA-256 cryptographic hash — a mathematical fingerprint. Only this hash syncs to the cloud. Never the photo itself.

• It is mathematically impossible to recreate your photo from its hash
• No one — not even us — can see, access, or recover your media
• Use Anonymous mode — no email or personal data required
• Export or delete all your data at any time
• Review our privacy policy directly inside the app

Your trust is not optional. It's our foundation.

🤝 SHARE & VERIFY WITH OTHERS

CDA2 isn't just for you — it creates a chain of trust between people.

Here's how: you capture a photo with CDA2 and send it to someone. The recipient opens CDA2 on their device and verifies it. The app checks the file's hash against the cloud record — if it matches, the photo is confirmed
authentic and unmodified. If even a single pixel was altered, verification fails.

⚠️ Important: share photos using methods that preserve the original file — email attachments, cloud drives (Google Drive, Dropbox), Bluetooth, or USB transfer. Platforms like WhatsApp, Instagram, or Facebook often compress or
re-encode images, which changes the file and breaks verification. When in doubt, verify after receiving to check.

📸 KEY FEATURES

🔐 SHA-256 Authentication — Every capture gets a cryptographic fingerprint. Even one pixel change produces a completely different hash.

☁️ Cloud Hash Sync — Hashes sync across devices for cross-user verification. Works offline — unsynced items queue and upload when connectivity returns.

✅ Batch Verification — Verify multiple photos and videos at once with a clear results report.

🖊️ Custom Watermarks — 6 positions, 6 styles, adjustable size, opacity, colors, and background shapes.

📷 Full Camera Suite — Front/back camera, flash (off/on/auto), self-timer (3/5/10s), photo and video modes.

📁 Gallery & Management — Filter by type, multi-select, rename, share verification info, full-screen viewer.

🔑 Flexible Sign-In — Google, email/password, or fully anonymous.

💾 Export & Recovery — Export metadata to JSON, recover your library after reinstall, delete all data anytime.

🌍 16+ Languages & Dark/Light Themes

👤 WHO IS CDA2 FOR?

Everyone. Anyone who wants to prove their photos are real.

Whether you're a parent documenting your child's milestones, a traveler capturing moments abroad, a tenant photographing apartment conditions, or someone who simply values truth in a digital world — CDA2 is for you.

📱 Social Media Users — Give your audience a way to confirm what you share is genuine.

📰 Journalists — Send field photos to editors who can verify originals instantly. Support media integrity and combat misinformation.

📋 Legal & Compliance — Create fingerprinted documentation with timestamps and device IDs. A strong supporting layer for record-keeping workflows.

🎨 Content Creators — Share your work and let anyone confirm you're the original creator with a verifiable digital fingerprint.

🏢 Businesses — Document incidents, property, or projects with tamper-evident records. Share with stakeholders who can independently verify.

🛡️ Privacy-Conscious Users — In the age of deepfakes, demonstrate your photos are real — captured by a real person, on a real device, at a verified time.

⚙️ HOW IT WORKS

1️⃣ Capture a photo or video with CDA2
2️⃣ A unique SHA-256 fingerprint is generated instantly
3️⃣ The hash syncs to the cloud — your photo stays on your device
4️⃣ Share the photo with anyone using a lossless method
5️⃣ The recipient verifies it with CDA2 — authentic or modified, instantly