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In this workshop we dive deep into the world of zero knowledge cryptography with DCbuilder. Explore the foundational concepts, from probabilistically checkable proofs (PCP) to SNARKs (Succinct Non-Interactive Arguments of Knowledge) and their applications. Learn how Worldcoin leverages zero knowledge cryptography to ensure privacy and security in their digital identity verification process. Hear more from our speaker here: / dcbuild3r About the Encode x Worldcoin Educate: Encode x Worldcoin Educate Series is a 4-week programme on the innovation in the Worldcoin ecosystem, designed to empower real-world applications and enhance user experience in the era of AI. ___________ Here's what was covered in this session: 1. Understanding Zero Knowledge (ZK) Cryptography How SNARKs and STARKs differ and why they’re important for blockchain scalability and privacy. How ZK proofs enable privacy-preserving verification of unique users in Worldcoin. 2. Semaphore Protocol and Privacy in Worldcoin How Semaphore allows users to prove membership without revealing their identity. Role of Merkle Trees and ZK proofs in creating privacy-preserving user verifications. Privacy mechanisms like Multi-Party Computation (MPC) and the Orb device for biometric security. 3. Challenges and Future Innovations Current research in improving client-side proving, proof aggregation, and ZKML for more efficient proofs. How Worldcoin is addressing performance issues across different devices and scaling its infrastructure. The future of ZK cryptography in enhancing digital identity systems and privacy. ___________ Timestamps: 00:00 Introduction 01:21 Understanding Zero Knowledge Proofs 02:26 Explaining Probabilistically Checkable Proofs (PCP) 06:46 Introduction to SNARKs 15:12 WorldCoin's Use of Zero Knowledge Cryptography 20:05 Semaphore Protocol and Merkle Trees 23:57 Nullifier Hash 27:56 Batch Processing and Validity Proofs 31:50 Digital Identity 37:53 Combining Attestations for Digital Identity 38:32 Challenges 40:09 Composable Digital Identity Systems 41:16 Teams in Digital Identity 41:56 Challenges in Zero Knowledge Proofs 45:28 Client-Side and Delegated Proving 47:28 Proof Aggregation and Network Capacity 49:56 Research Directions 52:36 QnA ___________ Join the Community 🐥 Encode Twitter: / encodeclub 🗣 Encode Discord: / discord About Worldcoin Worldcoin is designed to become the world's largest privacy-preserving human identity and financial network, giving ownership to everyone. Worldcoin aims to provide universal access to the global economy no matter your country or background, establishing a place for all of us to benefit in the age of AI. Read more here: https://worldcoin.org/ About Tools for Humanity Tools for Humanity is a technology company built to ensure a more just economic system. They are home to over 200 developers, scientists, engineers, designers, operators, creatives, economists and other various optimists. Currently building tools for Worldcoin and beyond. Read more here: https://www.toolsforhumanity.com/ About Encode Club Encode Club is a global community of top developers, professionals and talented students in Emerging Tech. Through leading educational programmes such as hackathons, bootcamps and accelerators we help you advance your career and work with transformative companies. Read more here: https://www.encode.club/