7. minimal protocol flow
Discussion
7.1 send bitcoin

ASCII:

7.2 receive bitcoin

7.3 reputation update

8. security model
immutability
Nostr proofs commit to:

these commit hashes anchor into the Bitcoin Crown Ledger β Bitcoin finality.
privacy
all event data is ZK-masked. Raw values never leave the device.
sybil resistance
Uses BSRL heuristics:

no custody risk
keys never leave device. no servers store funds.
9. reference implementation (minimal code)
fully functional skeleton in TypeScript for a Nostr + Bitcoin wallet:

this is the minimum working version for:
β sending BTC
β generating ZK proofs
β publishing reputation events over Nostr
10. conclusion
this client defines the minimal trustless interaction layer between:
Bitcoin payments
Nostr messaging
the Bitcoin Crown Fiscal Protocol
the Bitcoin Social Reputation Layer