A node's chain key is now its tapkey: its NIP-06 npub with the BIP-86
tweak, so one secret signs its nostr events and its chain spends, and
its address follows from its npub. Its leaves hang off the same tree,
byte for byte as on lineage's key tree page: an agent's ssh, git, dkim
and wg keys from its nostr secret, an org's ssh-ca, mtls and noise keys
from its seed. Inspect shows the tapkey, npub, derivation and leaves,
with the public lines to paste. Labs keyed by v1.1 keep their separate
m/86' chain keys until they are reset.
PROVENANCE.md and public/licenses now carry @scure/base, bip32 and
bip39, which came in with v1.1.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4upF5LVwmPDDqrhdUfnXh
