Bro is an open peer-to-peer application protocol that lets anyone pay bills
using Bitcoin over the Lightning Network. Initially available for PIX and
Boleto in Brazil; CoDi in Mexico; PromptPay in Thailand; Transferencia 3.0
in Argentina; Bre-B in Colombia.

All communication is end-to-end encrypted (NIP-44) and travels through
decentralized Nostr relays — no central server, no accounts, no KYC.

Features:

Self-custodial Lightning wallet (Breez Spark SDK)
Multi-currency P2P marketplace
BRIX Lightning Address (receive Bitcoin via phone or email)
QR code scanner
Real-time order tracking
Collateral tiers and AI-assisted dispute resolution
Login with Nostr key (nsec) or BIP-39 seed