Generate an Ed25519 did:key, sign a §27.1 role-binding record naming who holds it, and print a dual-control key-custody record. This is the onboarding step for §27 human accountability — the record this page produces is the same shape the Verification Desk and Verify tool check.
fetch/XHR/WebSocket calls (its Content-Security-Policy sets connect-src 'none') and writes nothing to localStorage, sessionStorage, IndexedDB, or a cookie. The private key exists only as an unextractable in-memory CryptoKey in this browser tab and is discarded the moment you close or reload it.