1. Sign in
Email and password with a display name for seal attribution.
Proof of authenticity · Newsrooms
Seal media at intake. Verify exact bytes before publish.
seresoul is a proactive cryptographic seal for digital files — not an AI deepfake detector. Creators bind identity and time to a SHA-256 hash. Anyone can check whether a file still matches.
2. Seal
Upload an image or PDF. Server hashes bytes and stores the seal record.
3. Verify
Public drop zone. Edit one pixel and status flips — exact-byte integrity.
Demo tip
On Verify, download the sample image, confirm it verifies after sealing, then re-export an edit and watch Not found / Content modified.