Toward succinct proofs of solvency with Jeremy Clark | a16z research
Source: YouTube · a16z crypto · published Sep 27, 2024 · 1:08:01
This presentation introduces succinct proofs of solvency for cryptocurrency exchanges, which allow exchanges to prove they hold sufficient assets to cover user liabilities without revealing sensitive information 2:01. The system aims to prevent exchange insolvencies like the Mt. Gox incident, where approximately half a billion dollars went unnoticed for years 4:09.
Key Takeaways:
• Centralized exchanges take custody of both sides of currency to execute standing orders when users are absent 2:37, creating security risks if breached
• Proof of solvency systems prove that an exchange's assets exceed or equal liabilities using zero-knowledge proofs without revealing the actual amounts 6:20
• These proofs don't prevent hacks but force exchanges to maintain proper accounting and make fraud more difficult to commit 10:05
• The technical challenge is supporting existing cryptocurrencies like Bitcoin and Ethereum that use non-pairing-friendly elliptic curves (SECP) 21:01
• Their approach uses sigma protocols and polynomial commitments to create efficient, constant-size proofs that work with existing blockchain infrastructure 32:02
Proofs of solvency represent a meaningful improvement in exchange transparency, raising the bar for committing fraud while protecting user privacy.
Sources:
- 2:01 Introduction to proofs of solvency concept
- 4:09 Mt. Gox exchange case study
- 6:20 Zero-knowledge proof explanation
- 10:05(https://www.youtube
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First 800 characters of the transcript
we're really uh glad to have Jeremy Clark here uh today and this week um so just like when I introduced Andrew yesterday i' have been working with Jeremy on uh blockchains for 10 years now our uh first couple of papers that we wrote together came out in 2014 uh it was actually a paper we wrote in 2016 um on proofs of solvency uh that uh Jeremy's going to be telling us more about today so uh I should say Jeremy's a associate professor at Concordia and uh Montreal um and yeah he's going to tell us all about proofs of solvency uh trying to prove that exchanges aren't going to well haven't already disappeared with all of your money that's a subtle distinction but an important one yeah all right yeah thanks uh it's awesome to be here again and and uh Happy uh to give this talk okay so before I …