The Privacy Trilemma
summary
Claim: on-chain financial privacy cannot simultaneously deliver maximal usefulness, self-sovereign privacy, and threat resistance. Public blockchains need money velocity and hack traceability, yet a $1.4B exploit shows the trade-off: about 70% remain traceable, ~30% go dark, ~4% get frozen. Three solution classes map to different sacrifices — idealized privacy (full privacy, no threat resistance), throttled systems with delays, and responsible designs using information custodians or MPC to decrypt transaction graphs under agreed conditions.
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chapters (11)
- 0:00Introduction and Welcome
- 0:20The Importance of Financial Privacy
- 1:56Three Key Properties of On-Chain Financial Privacy
- 2:39Self-Sovereign Privacy
- 4:10Maximum Usefulness of Blockchains
- 4:46Threat Resistance in Blockchain Protocols
- 6:43Balancing Privacy and Security
- 6:55Categories of Privacy Solutions
- 7:58Responsible Privacy and Information Custodians
- 11:45Conclusion and Future Directions
- 14:51Q&A Session
