This video with #Proton and nostr:npub1cj8znuztfqkvq89pl8hceph0svvvqk0qay6nydgk9uyq7fhpfsgsqwrz4u is really great. A #BTC future through mail is something we should ponder on 💭 🤔. Need more research on this.
nostr:note1q0a96qfvf9vnuzza39p0k8xdcmltcgjs4h3whtsu64syu0ays48syyhgnd