Zero Knowledge

This week, Anna explores the topic of proof of solvency with Kostas Chalkias, co-founder and chief of Cryptography at MystenLabs. They cover Kostas’ background in Cryptography and explore his work on Proof of Reserves, otherwise known as Proof of Solvency. They review past Proof of Solvency models using ZKPs and look at the protocols that major centralized exchanges are currently using. Then they dive into the security vulnerabilities, privacy issues, and general bugs that Kostas and his collaborators have identified in these protocols and their recommendations on how to better build Proof of Solvency systems. Here are some additional links for this episode: Episode 227: Move & Sui with Sam Blackshear from Mysten Labs Hard Questions: Update on Cambridge Analytica Provisions: Privacy-preserving proofs of solvency for Bitcoin exchanges By Dagher, Bünz, Bonneau, Clark and Boneh Broken Proofs of Solvency in Blockchain Custodial Wallets and Exchanges By Chalkias, Chatzigiannis and Ji Groth16 still live