Back to ExploreZKsync OS|The latest generation of the ZKsync protocol. Including the ZK prover (ZKsync Airbender), the STF (ZKsync OS) and the smart contracts that implement the protocol on-chain.zkSyncMaximum Bounty$100,000Live Since24 November 2025Last Updated22 September 2026PoC RequiredKYC requiredSubmit a Bug InformationScopeResourcesCodebaseTitleDescriptionLinkZKsync contractsOn-chain protocolZKsync OSState transition functionZKsync AirbenderProof systemTitleZKsync contractsDescriptionOn-chain protocolLinkTitleZKsync OSDescriptionState transition functionLinkTitleZKsync AirbenderDescriptionProof systemLinkDocumentationTitleDescriptionLinkDocumentationDocumentation and further resourcesDocumentationDocumentation and further resourcesTitleDocumentationDescriptionDocumentation and further resourcesLinkTitleDocumentationDescriptionDocumentation and further resourcesLink Go to Audits & Known IssuesSubmit a Bug