Check.
Check
Check any file.
Drop files to see whether they have been BitGraphed. A file bound exactly opens its proof. A photo that is a copy, a screenshot, a repost, a re-save, a file with its metadata stripped, is matched by what it looks like to the record its original’s tree binds, and opens the original’s proof, labelled as a copy. Everything runs in your browser; only SHA-256 hashes and a 64-bit fingerprint are sent, and nothing is ever made here.
Only its SHA-256 is sent.
Copies
The picture is the pointer.
Every photo bound on Make goes into its tree beside a fingerprint record: a 64-bit perceptual hash and a 32 × 32 grid of brightness, about 500 bytes, too coarse to show detail and enough to recognise the picture. The record’s hash is a leaf of the same tree as the photo, so the original’s own proof says what the original looks like. No watermark, nothing hidden in the pixels: a photo already carries its own appearance.
A dropped picture is read the same way in your browser. Its 64-bit hash goes to the server, which returns the records nearest it; the picture’s pixels are then compared with each record’s grid here, and the best match above the threshold opens the original’s proof.
A find is a find, not a proof. The match says this picture resembles the original recorded at that position; the proof says when the original’s exact bytes were bound. Whoever holds the original can prove it; a copy can only point.