The Living Proof · runs entirely on your device
Drop your photo. Watch the computation prove itself on it.
This page runs a real deterministic denoiser - the actual
quantized model from the Obsign SDK - on an image you choose. It runs twice
(your CPU and your GPU), proves they agree to the last bit, shows exactly what the operation changed, signs a
receipt your browser then verifies, and recovers your original bit-for-bit. No server. No upload. Nothing leaves this tab.
loading engine…
GPU…
SDK match…
1
Choose an image
sample loaded
2
Same model, two processors, zero difference
CPU · integer inference-
-
running…
3
Exactly what the operation changed
reversible · auditable
What changed (diff)
every pixel the operation touched, receipted
Coherence
real oriented structure (trust)
Invention
big change in low-structure = suspicious
4
A signed receipt - born and verified in your browser
Ed25519 · SDK format
Engine reproduces the SDK bit-for-bit
this page's integer inference matches the reference Python out_int hash (golden vector)
CPU = GPU, zero ULP
both processors produced the identical SHA-256
Provably reversible
original = enhanced − diff, recovered bit-exact
Receipt integrity + signature
canonical hash recomputed, Ed25519 signature verified locally
run the proof to generate a signed receipt…
TierA · bit-exact deterministic
Model fingerprint-
Signer-
Receipt SHA-256-
The receipt carries the model fingerprint and the SHA-256 of your original, the
enhanced result, and the exact diff. Anyone can re-run obsign verify-accountable and
reproduce all of it. Signing here uses a key generated in this tab (dev); production uses a CA
cert on the C2PA trust list.
That is the whole product, executed on you: deterministic, reversible, signed,
re-runnable computation - with the original always recoverable. Become a design partner →