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Michael Lewellen
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Michael Lewellen
@LewellenMichael
key whisperer @turnkeyhq building crypto solutions | ex @OpenZeppelin | contrib @_SEAL_Org @coincenter @TXblockchain_ @UT_Dallas @Compound_xyz @arbitrum
Dallas
michaellewellen.com
Joined March 2013
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  • user avatar
    Michael Lewellen
    @LewellenMichael
    Jan 16, 2025
    Today, I’m taking a stand against the Biden administration’s unjust crackdown on crypto development. I’ve filed a lawsuit against the DOJ to challenge their flawed and unjust interpretation of the law. My work on Pharos—a non-custodial protocol for public goods
    coincenter.org
    Coin Center Fellow Michael Lewellen is suing the DOJ over their criminalization of software...
    Coin Center supports a new lawsuit to oppose legal reasoning that would require just about everyone in crypto get a money transmission license
    113K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Dec 9, 2024
    Replying to @eternalcumslime @PopCrave and @PepMangione
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    23K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Jul 11, 2024
    ALERT: The compound.finance URL has been compromised and is currently hosting a phishing site. DO NOT interact with the compound.finance website until further notice. The Compound protocol itself is not impacted and all smart contract funds are safe.
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    Compound
    From compound.finance
    73K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Dec 30, 2024
    After nearly 4 amazing years at @OpenZeppelin, I’ll be stepping away from my role by the end of this year. Collaborating with a team that pushes the boundaries of blockchain security has been an extraordinary experience. I’m beyond grateful for the opportunities to collaborate
    9.1K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Nov 8, 2022
    New addresses added to the #tornadocash OFAC list. Some of them include TESTNET contracts. Who does @USTreasury think is laundering DPRK money using test Ether? Did they just copy-paste the TC Docs list and not check any of them?🤦‍♂️
    user avatar
    Peter Van Valkenburgh
    @valkenburgh
    Nov 8, 2022
    1/ OFAC today repealed the Tornado Cash designation that Coin Center is challenging in court and then replaced it with a new one. Nothing they've announced changes our strategy in this lawsuit. home.treasury.gov/news/press-rel…
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Aug 25, 2025
    I’m happy to share that I’m starting a new position as Head of Solutions Engineering at @turnkeyhq! 🚀 Turnkey is a crypto key management platform making it simple & secure to build onchain apps. With enterprise-grade security (from the minds behind Coinbase Custody) + a
    turnkey.com
    Turnkey — Secure, flexible, and scalable wallet infrastructure
    Turnkey is private key management made simple. Create wallets, sign transactions, and automate onchain actions — all with one elegant API.
    8.5K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Jun 18, 2025
    The proposal to create the Compound Foundation has been months in the making and is now set to clear 1M votes in support, with none yet opposed. This is a pivotal moment in Compound’s history where the longstanding gap left by the Labs team can be filled by a competent and
    Cactus | Compound | Proposal to Create the Compound Foundation
    Cactus | Compound | Proposal to Create the Compound Foundation
    From tally.xyz
    51K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    May 6, 2025
    This is why I'm suing the DOJ. FinCEN, regulator for money transmission, will specifically state that a dev isn't a money transmitter only for the DOJ to then prosecute that dev for.... unlicensed money transmission. Devs aren't safe until this ends.
    user avatar
    Zack Shapiro
    @zackbshapiro
    May 5, 2025
    Just revealed: FinCEN explicitly told prosecutors Samourai Wallet wasn't a money transmitter due to its non-custodial design; DOJ prosecuted developers anyway, suppressing exculpatory evidence for a year.
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    12K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Feb 18, 2025
    Two things to share this morning. 1/ I’ve joined @blockaid_ as Head of Solutions Engineering 2/ Blockaid just raised $50 million Well, ok. Three things. I’m also hiring for Solutions Engineers. Here’s why I’m excited about Blockaid (and why you should join me) 🧵
    6K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Feb 12, 2025
    I'm excited to have this as my last contribution at @OpenZeppelin. There's so much that we've learned from working with @compoundfinance @arbitrum and @zksync on their security council models that other teams take for granted. Don't start from scratch!
    user avatar
    OpenZeppelin
    @OpenZeppelin
    Feb 12, 2025
    Article cover image
    Article
    From Stage 0 to Stage 1: Security Council Best Practices in Rollup Governance
    Authors: @optechhh @LewellenMichael TL;DR In a decentralized governance system, a well-structured Security Council serves as the next step to ensure protocol integrity and decentralization. It...
    5.8K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Mar 11, 2023
    Hedera post-mortem is up. Looks like it was a bug in a smart contract precompile involving delegate call where an account could enhance their privileges. It's a really bad bug and it's good that it was stopped early as this could have rugged nearly all of Hedera DeFi. Fast
    user avatar
    Hedera
    @hedera
    Mar 11, 2023
    The @Hedera network prioritizes trust, safety, & transparency for its community & the ecosystem at large. @xmoxxen, CISO at @SwirldsLabs, and Alex Popowycz, CISO at @Hedera, detailed the March 9th attack & steps taken to prevent it from happening again. hedera.com/blog/analysis-…
    14K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Mar 9, 2025
    I've proposed three paths for the @compoundfinance DAO. I leave it to the community to decide. 1. Centralize leadership under @alphagrowth1 2. Collaborate with @MorphoLabs Protocol 3. Establish a DAO leadership model for Compound’s future.
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    Compound's Future: Three Paths
    From comp.xyz
    7.5K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Jul 8, 2025
    Thank you for the support in my lawsuit against the DoJ to protect developer rights 🫡 It means so much to see so many industry players aligned on this key issue.
    user avatar
    DeFi Education Fund
    @fund_defi
    Jul 8, 2025
    1/ NEW: Last night, DEF, @paradigm, @bitcoinpolicy, @BlockchainAssn, @crypto_council, @DigitalChamber, @SolanaInstitute, & @UniswapFND, filed an amicus brief in @LewellenMichael’s case against the DOJ in support of Lewellen’s opposition to the DOJ’s motion to dismiss. Let’s dive
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    6.4K
  • user avatar
    Michael Lewellen
    @LewellenMichael
    Mar 23, 2025
    The @TornadoCash OFAC sanctions are really truly dead and gone. You can see it happening onchain where Chainalysis is removing them from their sanctions oracle contract. etherscan.io/tx/0x75f213aa4…
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