Balancing Encryption, Anonymity, and UX in Bitcoin Apps
summary
Vexel is a working Bitcoin marketplace/social app that trades usability for a practical privacy tradeoff: it builds a local social graph from phone numbers (import 200 contacts, expect ~5 users), encrypts offers per-recipient using client-side keys, and splits data into three isolated services: contacts, encrypted offer store, and ephemeral chat so the server can’t link offers to identities. Current protections are hashed numbers with plans to explore private set intersection; the claim is that this pragmatic design actually increases real-world adoption by non-geeks.
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chapters (5)
- 0:00Introduction
- 3:54Privacy apps adoption challenges
- 9:18Vexel privacy and usability
- 21:56Bitcoin app entry points
- 27:42Build mainstream privacy apps
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