Prove a scan is real, down to the pixel.
Every scan gets an invisible watermark and a block-level seal. Change one pixel and MedSeal shows exactly where.
Verify authenticity · free · 100% offline
Drop a scan. Know in a blink if it's real.
If it was sealed by MedSeal it carries its own certificate, so one file is enough. Nothing leaves this machine.
Seal a scan
Give a scan its own tamper alarm.
Tag it with patient and hospital, then seal it. You get back an identical-looking image that anyone can verify offline.
Four layers between a scan and a forgery.
Reversible watermark
Weave identity into the pixels, invisibly
Patient and hospital are embedded so the original recovers bit-for-bit. A radiologist sees no difference.
SHA-512 · 16×16 blocks
Fingerprint every block
A global hash gives an instant pass or fail; 1024 block hashes say exactly which 0.1% region changed.
ECDSA-P256
Sign it with MedSeal's key
The fingerprint is signed by a key only MedSeal holds. Verification trusts that key, not the certificate's own claims.
Self-verifying certificate
Travel as a single file
The certificate rides inside the sealed PNG. Anyone can verify it offline, with nothing to install.