Paying for Privacy Preserving Messaging
summary
Claims a workable design that pays relays to protect metadata by embedding payments in messages, using mix nets for sender unlinkability, VRF secret-shopper packets sampled from cover traffic to audit relays, staking to prevent packet-bias, and a blockchain optimistic fair exchange smart contract plus payment-channel counters to resolve cheating. Promises low communication overhead compared with whisper, sender anonymity, and an internal prototype called Papa that aims to meter and reward honest relay behavior.
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chapters (16)
- 0:00Start
- 5:28The Onion Router
- 6:15Whisper
- 7:13Mix networks
- 7:37What is a mix network?
- 9:26How do you make a mix network?
- 9:41Overview
- 10:25How to reward relay nodes?
- 10:53Pay hops directly
- 11:31Blind signed tokens
- 13:49Idea 2: Forward money along path
- 19:05Idea 3: Proof-of-mixing
- 20:06Proof-of-mixing VRF usage
- 20:20Proof-of-onion VRF usage
- 21:30Comparison
- 22:39Conclusion
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