Hi everyone,
I’m playing with an concept of a decentralized address book app for Delta Chat. It lets group members selectively share contact info and export others’ details directly to their phone’s native address book.
• Key concept - You only control your own contact information.
• How it works: Fill in your card, check the fields you want visible in the current chat, and click Publish.
• Exports: Shared cards export as standard vCards.
• You can export and import your full profile.
• Security Note: WebXDC cannot currently authenticate senders, so the UI labels cards as claims, never as verified.
I have played with other platforms, this concept over nostr relays here - GitHub - tompatulpan/nostcard: Decentrilized, Zero-knowledge, client-side encrypted contact card (vCard) sharing via the Nostr protocol. · GitHub