# Panel I Practical Zero Knowledge Proof Applications | Pragma Istanbul 2023

- Channel: [ETHGlobal](https://streameth.org/ethglobal)
- Date: 2024-10-09
- Duration: 50:03
- Topics: zero knowledge, zk rollups, zkEVM, Aztec, Aleo, Scroll, privacy blockchain, zk proof, zk apps, layer 2, L1 vs L2, decentralization, zk smart contracts, EVM compatibility, Noir, Leo, zk compute, zk scalability, identity with zk, blockchain privacy, composability, zk interoperability, zk data, zk identity, CBDCs, zk passport, zk settlement, zk bridges, zk circuits, zk development, zk security, ZKProof, zk mainnet, Pragma Istanbul, ETHGlobal
- Watch: https://streameth.org/watch/yt-jm9AYZHtAhw
- YouTube: https://www.youtube.com/watch?v=jm9AYZHtAhw

## Description

Join ETHGlobal's Kartik Talwar in a high-level conversation with Sandy Peng (Scroll), Zac Williamson (Aztec), and Alex Pruden (Aleo) as they dive into the future of zero knowledge (ZK) technology. This panel from Pragma Istanbul 2023 explores the practical applications of zero knowledge proofs, from scaling solutions and privacy-preserving smart contracts to zkVMs, L1 vs L2 debates, and developer adoption challenges.

Learn how Scroll is bringing Ethereum compatibility to ZK rollups, why Aztec is prioritizing hybrid private/public composability, and how Aleo is enabling decentralized private computation at L1. If you're building with ZK, interested in identity, privacy, compliance, or understanding the composable future of blockchain, this conversation is a must-watch.

00:00 Introduction and panel kickoff
01:05 First expectations vs reality in ZK development
04:25 Scroll’s mission and scalable ZK architecture
06:31 Aleo’s origin and focus on private computation
07:59 Aztec’s evolution from L1 to privacy L2
10:37 Sequencer assumptions and state models
13:14 Hybrid public/private state for ZK contracts
15:33 The role of MEV in private smart contracts
16:07 Why privacy matters for real-world users
17:26 Developers vs users in ZK adoption
19:13 Scroll’s EVM compatibility and roadmap
21:58 Why Aztec and Aleo built custom languages
24:00 Designing new execution environments
26:30 Language tradeoffs and compiler efficiency
27:00 Composability in privacy-preserving systems
30:19 Cross-network and real-world integration via ZK
32:13 Scroll apps live on mainnet
34:48 Aleo’s use cases: identity, compliance, CBDCs
37:31 Zero knowledge for digital identity and data proofs
41:17 What defines a “mainnet” launch?
44:18 Decentralization, permissionless values, and clarity
47:18 Aztec’s values and decentralization requirements
49:47 Final thoughts and close

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🇹🇷 *Pragma Istanbul*
The sixth edition of Pragma took place in Istanbul in November 2023 with a curated series of high-quality talks that sparked thought and discussion. Pragma Istanbul 2023 was an opportunity discuss the future of web3 and reflect on the past. Watch the full Pragma Istanbul 2023 playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh4rHV1H4J7y0wDok4bIS17t&si=lb8ttkU1HS2tpnUP

ETHGlobal's Pragma series takes place in cities around the world, and is designed to be a different kind of event. Pragma is a one-stage conference with founders-only on stage, bringing together a small group of curated attendees and speakers to discuss the future of web3 and reflect on the past. 

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