Sovereign identity at $20/yr per Mark. Issue an envelope, watch the substrate sign and verify it in milliseconds — humans, AI agents, and devices use the same shape.
01 · ISSUE A MARK
Generate a sample Mark
A Mark is an envelope binding an actor (human, AI agent, or device) to a scope they're allowed to act within. Click below — the substrate produces a fresh, signed envelope. No keys leave the server.
// click "Issue Mark sample" to see the envelope
elapsed: — ms · signed: —
02 · VERIFY THE MARK
Substrate verifies the Mark you just issued
The same envelope is sent to /api/mark/verify. The substrate returns a signature verdict and the structured fields it pulled out.