# Deep Dive into Privacy Enhancing Technologies I Remi Gai

- Speakers: Remi Gai
- Channel: [ETHGlobal](https://streameth.org/ethglobal)
- Date: 2025-11-09
- Duration: 19:56
- Topics: privacy, blockchain, crypto, transparency, pseudonymity, confidentiality, anonymity, total privacy, zero-knowledge proofs, ZK, fully homomorphic encryption, FHE, trusted execution environments, TEE, multi-party computation, MPC, compliance, composability, confidential tokens, Inco, EVM, private voting, encrypted data, DeFi, identity, network effects, developer tools, confidential token association
- Watch: https://streameth.org/watch/yt-IT7heL1dCKc
- YouTube: https://www.youtube.com/watch?v=IT7heL1dCKc

## Description

Remi Gai’s talk, “Deep Dive into Privacy Enhancing Technologies,” explores the critical need for privacy in blockchain and crypto, highlighting that transparency, while useful for verification and compliance, deters adoption due to privacy concerns. Remi explains privacy as a spectrum: from pseudonymity (default, but weak privacy), to confidentiality (hiding amounts), anonymity (hiding participants), and total privacy (hiding all data).

He reviews privacy-enhancing technologies: Zero-Knowledge Proofs (ZK), Fully Homomorphic Encryption (FHE), Trusted Execution Environments (TEE), and Multi-Party Computation (MPC), comparing their trade-offs in compliance, composability, and performance. Remi emphasizes the importance of flexible decryption and composability for compliance and business logic, introducing confidential tokens and the Confidential Token Association. He presents Inco, a private compute layer using encryption-based approaches for EVM-compatible blockchains, enabling confidential tokens, private voting, and gaming with minimal developer friction. Remi encourages collaboration to advance privacy as a foundational blockchain primitive.

00:00 Introduction  
00:31 The Privacy Problem in Blockchain  
01:36 Privacy as a Spectrum  
02:26 Pseudonymity and Its Limits  
03:13 Confidentiality Use Cases  
03:57 Anonymity and Total Privacy  
05:12 Choosing the Right Privacy Model  
05:31 Compliance and Privacy  
05:59 Overview of Privacy Technologies (ZK, FHE, TEE, MPC)  
06:23 Fully Homomorphic Encryption (FHE) Explained  
09:21 FHE Challenges and Scalability  
09:46 Trusted Execution Environments (TEE)  
11:31 Commitment vs. Encryption-Based Solutions  
12:48 Flexible Decryption and Compliance  
13:35 Composability in Privacy Systems  
14:50 Confidential Token Ecosystem and Identity  
15:47 Confidential Token Association  
16:13 Introducing Inco: Private Compute Layer  
17:26 Developer Experience and Use Cases  
18:17 Private Voting and Randomness  
18:56 General Purpose Privacy Applications  
19:13 Partnerships and Call to Action  
19:37 Conclusion

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🇮🇳 *Pragma New Delhi*
Pragma New Delhi 2025 was held on September 25th at the JW Marriott Hotel in Aerocity New Delhi and was an in-person summit for builders and leaders in the web3 ecosystem. Watch the full Pragma New Delhi YouTube Playlist here: 

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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✅ Follow Remi Gai
X: https://x.com/remi_gai

✅ Follow Inco Network
X: https://x.com/inconetwork

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Warpcast: https://warpcast.com/ethglobal
Website: https://ethglobal.com
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