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    ZK Hack

    Also appeared as ZK Hack Berlin, ZK Hack Istanbul, ZK Hack Kraków, ZK Online Hackathon for Web3 Builders

    Prize money awarded
    $63,000
    Prizes
    23
    Winning projects
    23
    Hackathons
    4
    Largest prize
    $5,000
    Active
    2023–2025

    What they reward

    Tech their winners favour

    Share of ZK Hack's winners using it, against all entries at the same hackathons.

    • foundry13% of winners · 6% of entries
    • noir26% of winners · 12% of entries
    • zk65% of winners · 40% of entries
    • arbitrum17% of winners · 11% of entries
    • react39% of winners · 28% of entries
    • rust43% of winners · 31% of entries
    • solidity39% of winners · 33% of entries

    Hackathons

    1. ZK Hack Berlin Jun 20–22, 2025$9KOrganizer5$9K
    2. ZK Online Hackathon for Web3 Builders Jan 27 – Feb 14, 2025$12.5KOrganizer5$12.5K
    3. ZK Hack Kraków May 17–19, 2024$20KOrganizer5$20K
    4. ZK Hack Istanbul Nov 10–12, 2023$21.5KOrganizer8$21.5K

    Winners

    All 23 winning projects →

    Gemstone Builders

    AZAZ

    A Factorio inspired game living on the blockchain! The players can keep their factory designs secrets and build the global resource economy!

    $13,000 · Aleph Zero · Global Bounty · +2 more

    Private UTXO Discovery

    AZAZ

    Allow discovery of UTXO (needed for private applications) without requiring the user to sync the application from scratch. This is done via Private information retrieval from an untrusted server

    $10,000 · Aleph Zero · Hacker Path · +2 more

    CornHub

    AZAZ+3

    CornHub is an age-gated website for corn connoisseurs. Age verification via passport scan and the use of zero-knowledge proofs ensures access for adults only without compromising privacy.

    $8,250 · Aleph Zero · Product Path · +6 more

    =nil; chronicle

    =nil; chronicle is an autobattler game using zk to keep players' choices hidden from their oppononents.

    $7,500 · =nil; Foundation · =nil; Foundation - Template Rust = zkLLVM Track · +3 more

    VeilPad

    VeilPad is a secure token launchpad deployed on Arbitrum that allows organisations to launch their ERC-20 tokens. It uses zk-proofs to allow users to register, contribute and claim tokens anonymously.

    $5,000 · Arbitrum · Arbitrum Web3 dApp with zkVerify · +1 more

    Proof of Med

    Proof of Med is a decentralized solution that ensures the authenticity of medical prescriptions in online pharmacy transactions using Zero-Knowledge Proofs (ZKPs).

    $5,000 · Arbitrum · Arbitrum Web3 dApp with zkVerify · +1 more

    AnonAbuse

    Provide credible information to law enforcement and share personal experiences related to a hack, phishing attack, or scam in while staying anonymous using ECDSA Groups, RiscZero, and zkML

    $4,400 · ZK Hack · Top Projects at ZK Hack Istanbul · +1 more