How do you prove something without revealing it? Eli Ben-Sasson meets ZK co-inventor Shafi Goldwasser on Block Smart to explore her Eureka moment, ZK beyond blockchains, and what it could unlock for AI. Chapters: 0:00 Greetings and intro: Shafi Goldwasser 1:22 ZK for non-mathematicians 5:01 How Zero-Knowledge came about 8:53 What did you imagine ZK would be used for? 13:03 Beyond blockchain: where else can ZK go? 14:58 Why ZK fits blockchain? 19:11 The case for trustlessness 20:29 AI meets ZK 24:02 The Eureka moment 27:35 Quick-fire questions 29:40 Parting thoughts