We are excited to announce that zkSync Era is free open source, as promised, under MIT/Apache 2.0 license. Being community owned is part of our mission, and we couldn’t take an approach other than making our code opened. Our zkEVM has been live on testnet for over a year and on mainnet since October, and has been through lots of testing and audits. We are now confident that its code is ready for the eyes of the public and would love to hear our community’s suggestions.

We believe anything but full open source is a form of censorship, and that open sourcing the technology will help accelerate mass adoption of our ZK-rollup and establish zkSync Era’s zero-knowledge prover as the gold standard.