Never enter a real seed phrase. On Mainnet this page holds the real mainnet keys for whatever you give it, with no secure element under them: treat anything typed in as public.
Never treat this as secure. Not on a phone, and not on an airgapped laptop with the network unplugged. Making device firmware run in a browser took a great deal of custom wiring, any of which could have introduced a critical bug. Treat every key it shows as public and never enter a seed phrase you rely on.
Running stock SeedSigner 0.8.7, the firmware a plain SeedSigner runs.
The firmware is pinned to a published SeedSigner release, by tag and by commit, rather than to a branch. A branch moves and can be rewritten out from under a rebuild; a published tag cannot.
Two devices. The device button under the simulator picks the hardware: the SeedSigner Plus with its 320×240 screen, or the original build on a Waveshare 1.3" hat at 240×240. Switching starts the firmware again.
Recording it. The record button saves an MP4 of the session: the firmware's screen alone at its own size, or the whole device centred on a dark or light background, chosen under the gear. The video is made in this browser from the firmware's frames, not by filming the page, so the pointer is never in it, and nothing is uploaded anywhere.
Licences. SeedSigner, Pyodide, jsQR, mp4-muxer and the libraries under them are other people's work, each under its own licence. The notices and licence texts are served alongside this page.
Loading 0.0s
starting…