Summary: ZK Stack lets you create network of Hyperchains (L2, L3, Validium). All share prover = native comms.

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ZK Stack gives you the ability to create a network of blockchains called hyperchains. They can be either L2 or L3, depending on the use case. The design space of hyperchains allows for different security guarantees, ranging from centralized DA layer to pure ZK roll up. Hyperchains in the ZK Stack have native communication between them thanks to the shared prover system.

Alex Gluchowski and Anthony Rose join us to discuss zkSync's ZK Stack and how Hyperchains enable composable applications at scale. We cover the ZK Stack design and ZK Credo, the security tradeoffs of various Hyperchain implementations, how Hyperchains enable shared composability, zkSync's forced tx inclusion mechanism, Hyperchains vs Cosmos appchains and more!

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Timestamps:

(00:00) Introduction

(03:50) Interview Start: zkSync

(04:06) The ZK Stack Announcement + ZK Credo

(08:32) Why Use the ZK Stack?

(14:05) Implementations and Security Tradeoffs

(26:39) Hyperchain Composability

(29:52) The Priority Queue: Forced Transaction Inclusion

(34:59) Account Abstraction

(38:20) Customization and Application Specificity

(42:24) Decentralizing Sequencers and Provers

(52:14) Hyperchains vs Cosmos Appchains

(57:00) ZK Stack ELI5 and Early Partners

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Resources:

zkSync

https://zksync.io/

https://twitter.com/zksync

ZK Credo

https://github.com/zksync/credo

ZK Stack Announcement

https://twitter.com/zksync/status/1673317167628967936

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