# Enterprise Privacy Using ZK

- Speakers: [Paul Brody](https://streameth.org/speakers/paul-brody)
- Event: [Zuzalu Montenegro 2023 - zkSync](https://streameth.org/zuzalu/zuzalu_montenegro_2023__zksync), Montenegro
- Channel: [Zuzalu](https://streameth.org/zuzalu)
- Date: 2023-04-18
- Watch: https://streameth.org/watch/65b8f8dba5b2d09b88ec1ebf

## Description

In this video, Paul Bernand, the global blockchain leader at EY, discusses enterprise privacy in the CK field. He explains that most enterprise deals require a different kind of privacy than what most individual users need and that private blockchains don't work. Bernand introduces Nightfall, a layer to ZK-Optimistic Privacy Rollup that EY has been working on since 2017. He explains that Nightfall is a shield contract that requires an enterprise identity certificate to use and is confidential but not anonymous. Bernand also discusses the cost of transactions and the development process of Nightfall.