Episode notes
Armin Sabouri recently demonstrated how wallet fingerprints can be used to decompose payjoin transactions and recover payment amounts, and in this episode he explains what that means for privacy tools across the board. Shinobi and Armin discuss why standardization efforts like BIP 69 backfired, whether randomization can help, and how wallets can stop standing out on-chain.
Grab your copy THE 2036 ISSUEhttps://store.bitcoinmagazine.com/pages/the-2036-issue
Shinobi — Bitcoin Magazine
Armin Sabouri — Payjoin Dev Kit contributor
Chapters:
01:08 Why Build a Dev Kit Instead of a Special-Purpose Privacy Wallet
02:25 What Is Payjoin? How It Differs from Coinjoin
02:54 How Chain Analysis Works: The Common Input Heuristic Explained
04:10 Payjoin's Limitations: Counterparty Privacy Trade-Offs
04:40 Wallet Fingerprints: The Attack That Deanonymizes Payjoins
06:58 Building Open-Source Chain Analysis to Fight Chainalysis
08:16 From Payjoin to Multi-Party Coinjoins: The NS1R Design
10:14 Intersection Attacks and Measuring Privacy Across the Transaction Graph
13:20 Roadmap: A Dozen New Wallet Integrations and Privacy Research Ahead
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