This Researcher Has a Plan to Put Privacy in Every Bitcoin Wallet
summary
Demonstrates that wallet fingerprints let chain analysis decompose payjoin transactions and recover payment amounts (three real transactions tested), and delivers a Rust Payjoin Dev Kit with language bindings already in two production wallets (Cake Wallet, Bull Bitcoin mobile) and ~8–12 integrations in progress. Describes an implemented N-senders-1-recipient NS1R design, plans to build open-source chain analysis (BlockSci revival), shows BIP69 standardization backfired, and weighs randomization versus homogenizing fields.
AI-written summary · about
chapters (10)
- 0:00Start
- 1:08Why Build a Dev Kit Instead of a Special-Purpose Privacy Wallet
- 2:25What Is Payjoin? How It Differs from Coinjoin
- 2:54How Chain Analysis Works: The Common Input Heuristic Explained
- 4:10Payjoin's Limitations: Counterparty Privacy Trade-Offs
- 4:40Wallet Fingerprints: The Attack That Deanonymizes Payjoins
- 6:58Building Open-Source Chain Analysis to Fight Chainalysis
- 8:16From Payjoin to Multi-Party Coinjoins: The NS1R Design
- 10:14Intersection Attacks and Measuring Privacy Across the Transaction Graph
- 13:20Roadmap: A Dozen New Wallet Integrations and Privacy Research Ahead
related talks
15mTowards Better Privacy Reasoning
15mExploring Monero's Privacy Innovations and Uncompromising Security
03h 46mThursday, Nov 14th talks! | Part 1
01h 02mThe Bitcoin Privacy Debate
43mBreaking Bitcoin Privacy
06h 46mbitcoin++ privacy edition | Riga, Latvia | Day 2
28mProof of Work - An interview – Travin Keith
40mSilent Payments and Alternatives to Bitcoin Privacy