user avatar
Ari Juels
@AriJuels
Prof., Cornell Tech; Co-Director, IC3; Chief Scientist @chainlink Labs; author, THE ORACLE, oraclenovel.com. Views expressed are mine alone
Bsky: @arijuels
arijuels.com
Joined June 2014
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14.4K
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  • user avatar
    Ari Juels
    @AriJuels
    Sep 4, 2025
    In 2017, I wouldn't have dreamed that Chainlink would be where it is today thanks to Sergey and Steve's foresight and leadership. I look forward to being amazed eight years from now.
    user avatar
    Chainlink
    @chainlink
    Sep 4, 2025
    On this date 8 years ago, the Chainlink whitepaper was released to the world. Since 2017, Chainlink has evolved from just an idea to becoming the industry-standard oracle platform enabling tens of trillions in transaction value and securing nearly $100B for the vast majority of
    00:00
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  • user avatar
    Ari Juels
    @AriJuels
    Oct 2, 2023
    To the anonymous LINK Marine who secretly picked up the tab for my lunch today, what a pleasant surprise! Thank you so much!
    60K
  • user avatar
    Ari Juels
    @AriJuels
    Sep 5, 2024
    Seven years ago, I saw a bright future for Chainlink, but didn't imagine it would become the foundational infrastructure for DeFi it is today. Visionaries like Sergey and Steve did. Who's to say what Chainlink will do for TradFi in the next seven years? @SergeyNazarov
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  • user avatar
    Ari Juels
    @AriJuels
    Oct 23, 2024
    DECO was the first zkTLS protocol. These things take time, so I'm delighted that Chainlink has just announced its inclusion in the Chainlink Platform Privacy Suite. Kudos to the DECO team: @0xFanZhang @mskd96 Jasleen Malvai and @sgoldfed. @chainlink
    user avatar
    Chainlink
    @chainlink
    Oct 22, 2024
    Replying to @chainlink
    These new features complement the Chainlink Platform’s existing privacy-preserving capabilities, including DECO—a novel ZK-oracle technology for authenticating web data in a privacy-preserving manner. DECO uses zero-knowledge proofs (ZKPs) and existing web infrastructure to
    60K
  • user avatar
    Ari Juels
    @AriJuels
    Sep 15, 2022
    The Oracle of Delphi was critical infrastructure in ancient Greece—pivotal in the major political decisions and historical events of the time. This coin (in a Berlin museum) depicts one founding myth, a clever surveying trick by Zeus to site the Oracle at the center of the world.
  • user avatar
    Ari Juels
    @AriJuels
    Jan 3, 2024
    The Oracle jacket is done. Thanks to the brilliant David Ter-Avanesyan for this understated gem in gold and black and to @VitalikButerin Martha Pollack @SergeyNazarov @el33th4xor and @lmoroney for so graciously providing cover blurbs. Looking forward to sharing this adventure
    64K
  • user avatar
    Ari Juels
    @AriJuels
    Sep 17, 2022
    A milestone in privacy-preserving oracle systems. Congrats to the #Chainlink DECO team and to @0xFanZhang @mskd96 Jasleen Malvai and @sgoldfed!
    user avatar
    Chainlink
    @chainlink
    Sep 16, 2022
    In an alpha test with @useteller, #Chainlink DECO was used to verify off-chain bank account balances in a privacy-preserving manner as a way of reducing collateral requirements. Learn more about undercollateralized lending and the proof of concept below. blog.chain.link/undercollatera…
  • user avatar
    Ari Juels
    @AriJuels
    Oct 5, 2023
    THE ORACLE cover is complete (thanks to the wonderful designer at Talos Press known to me only as David!). And the website is up! OracleNovel.com Publication date: 20 Feb. 2024. Book events being planned. #OracleNovel
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  • user avatar
    Ari Juels
    @AriJuels
    Sep 29, 2022
    Full prototype of Chainlink's Fair Sequencing Services (FSS) unveiled at SmartCon 2022. FSS combines a long line of classic and cutting-edge research with considered design by Chainlink Labs research. The goal: Reduce harmful MEV. @pszalach @dahlia_malkhi
  • user avatar
    Ari Juels
    @AriJuels
    Feb 12, 2024
    Not everyone fully appreciates that oracles are more than just data feeds. They're bidirectional, compute-enabled bridges between blockchains and external resources—resources that can include other blockchains. #Chainlink
    user avatar
    Chainlink
    @chainlink
    Feb 10, 2024
    The cross-chain era is here, enabled by #Chainlink CCIP's unparalleled security. 🏝️ No more multi-chain fragmentation 🧑‍💻 Seamless user experience ⚡ Cross-chain composability for nextgen dApps Your cross-chain starter pack:
    44K
  • user avatar
    Ari Juels
    @AriJuels
    Sep 23, 2022
    Silver coin (in a Berlin museum) from the ancient Greek colony of Kroton. The Pythian tripod was an emblem of the city, whose founding relied upon a prophecy from Apollo at the Oracle at Delphi. When founding a new colony, the Greeks considered it imperative to consult an oracle.
  • user avatar
    Ari Juels
    @AriJuels
    Jan 27, 2023
    Key management could become the Achilles' heel of the whole crypto endeavor: If users can't custody their own keys, they'll lean too heavily on centralized services. DECO can be a powerful ingredient in a workable solution.
    user avatar
    Chainlink
    @chainlink
    Jan 26, 2023
    In this new research post, @chainlinklabs Chief Scientist @AriJuels explores how #Chainlink DECO could help simplify key management by enabling users to safely recover crypto keys through authentication to websites of their choice. blog.chain.link/self-custody-w…
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  • user avatar
    Ari Juels
    @AriJuels
    Nov 8, 2023
    Our new paper on DAOs has two main findings: (1) Common ways to measure decentralization today leave DAOs flying blind. A new metric, Voting-Block Entropy (VBE), surfaces key lessons about how to decentralize DAOs. (2) Dark DAOs are practical and a realistic threat. They enable
    73K
  • user avatar
    Ari Juels
    @AriJuels
    Sep 21, 2022