Before it leaves your hands.
Protect before exposure. Verify after. Steganosaur records your work while it is still in your hands, and later checks what comes back against that record.
Something you made.
Photography, illustration, audio, video, documents, archives, 3D work, source code. Each is a file, and for now it is still in your hands. Every kind can be recorded. Most can also be published as a copy.
A recording
The terrain is chord-progression.wav, a sixteen-second test file. What you hear is a separate recording.
Record its name.
While the work is still in your hands, its name is sealed into a record. The name is sixty-four characters computed from every byte, and one changed bit changes it. The file itself can stay on your machine.
chord-progression.wav · 705 644 bytes · SHA-256
97210bb9c61f7c1275bfc489729f88158895525138db5647f9f44c0a968a6b33
Computed on this device. Nothing is sent, recorded or saved.
Keep the record.
The record goes into your Wallet and stays there. Nothing that happens out there changes the name it holds.
Publish the copy.
Where the format allows, Steganosaur prepares a second file to publish: the same work, with one line added that says it is a copy. The master is left as it was. Anyone can read that line or remove it.
This file is a publication copy prepared with Steganosaur from a source file that was left unmodified. It is not the master, and nothing embedded in it establishes authorship, copyright, or that any right subsists.
Out there, it changes.
Copies travel far from where they were made. They are reposted, cropped, recompressed and renamed, and the context that came with them falls away, the open line included.
Verify what comes back.
Bring a file back later. Steganosaur checks it against the evidence already recorded: the master, and the notes made with the copy. Each answer stands alone, and none of them says who made it.
- Same bytes as the copy that was madematches
- Its line names this copymatches
- The copy's notes agree with themselvesmatches
- Its notes point to the master you keptmatches
- Same format and length as the copymatches
- Looks or sounds like the sourcenot checked
- Carries a hidden tagnot supported
These are the answers the command-line check gave for three prepared files. This page checks nothing itself.
Before it leaves your hands.
Steganosaur is in private development. Tell us where to reach you and what you would protect first.