Lead OSS dev @OpenZeppelin. Love AI and decentralized systems, but solving problems comes first.

Madrid
Joined October 2017
same team, same standards, same open source commitment, now with S&P Global's institutional reach behind us 🫡
Today we are announcing that S&P Global has entered an agreement to acquire OpenZeppelin. Onchain finance is growing from an emerging market into core financial infrastructure, and the standards and rails our team and community built are becoming the rails of global finance. OpenZeppelin smart contracts facilitated over $37 trillion in value transferred, with the vast majority of the largest DeFi protocols, blockchain networks, stablecoins and tokenized funds relying on them. With S&P Global, we expect to accelerate the impact of onchain finance, backed by more than a century of trust in global markets, benchmarks, and risk frameworks. To our clients and to all the users of OpenZeppelin open source tools: • OpenZeppelin Contracts and all our open source applications and tools remain open source, free, and publicly maintained on GitHub. Building open source standards stays a core priority. • Audits, engineering work, and ecosystem programs continue with the same team, brand, quality, and customer experience, with what will be the added benefit of S&P Global's research capacity, market data, and institutional reach. For the last decade, OpenZeppelin has set the security standard for onchain finance. Today begins a new chapter for that mission, together with one of the most trusted names in global markets. Read the full announcement: openzeppelin.com/news/spglob…
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Eric Ng retweeted
I'm very happy to have reached a point in my life where I keep coming up with ideas that feel interesting, non-obvious, and worth pursuing. Then I spend five minutes researching one and find at least five companies already building the same thing. Crazy times.
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OpenZeppelin Move Contracts for @SuiNetwork shipped v1.3 Bring the latest audited foundations to your Sui app: ➝ Rate limiting ➝ Role-based Access Control ➝ DeFi math primitives for AMM swaps and bonding curves Full changelog ↓ github.com/OpenZeppelin/cont…
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Eric Ng retweeted
Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Its capabilities exceed those of any model we’ve ever made generally available.
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Sui developers, put your Move security skills to the test ⛳️ Move-over is an open source, browser-based CTF. Read the vulnerable contract, write your attack logic and return the flag. Like Ethernaut, but for @SuiNetwork 💧
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Building on @Starknet keeps getting easier 🛠️ Cairo Contracts v3.0.0 is here - fully audited 🔒 Key updates: • ERC6372 clock standard for governance voting mechanisms • AccessControlDefaultAdminRules for enhanced admin management • Simplified ERC4626 fee configuration
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OpenZeppelin Solidity Contracts v5.5 is here 💥 Gas optimizations, native passkey authentication, formal verification support, and cross-chain interoperability—all designed to help you build secure, efficient smart contracts. Here's what's new 🧵
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deleting legacy code & docs is literally a free therapy
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Being part of the team that moves Starknet forward is a great honor, but it also means that its your phone that rings when there is any outage. And as Starknet usage surged, we tackled edge cases that caused the phone to ring quite a few times over 09.10-15.10 And each time it did, some amazing engineers popped up, restored operations promptly, discuseed the situation with applications that showed concerns, and brainstormed on what to do. All the issues we tackled then are fixed, and Starknet is now more resilient for this kind of usage. But this doesn't mean we can downplay these incidents and move forward silently. Only through trasnperancy and honest feedback the team and I can improve. So you can read more about this in the community blog (thx @Michal_Wosk for your help!) - community.starknet.io/t/sn-m…. You can also ask me whatever you want.
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Privacy, ZK, STARKs, Zcash, Starknet! This Tuesday (Nov. 4), @zooko and I will have a live Twitter session to discuss them all. 1. Set a reminder for Tue, Nov 4, 4:00 PM UTC 2. Got an interesting question? Share it here in the comments. We won’t be able to answer all the questions, but we’ll try to answer the most interesting ones. See you there!
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Dear algorithm, Please show this post to everyone who builds safe smart contracts with OpenZeppelin—and everyone who should be. Thank you.
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OpenZeppelin Docs just got a major revamp 🎨 With many new contracts, tools, and supported blockchains added over the years, we heard your feedback and rebuilt the docs from the ground up to help you find what you need faster. Take a look yourself: docs.openzeppelin.com
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Eric Ng retweeted
Replying to @Starknet
Me staking my 0.000001 BTC
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1/ Bitcoin doesn’t change. But what you can do with it just did. From the June 2024 announcement that Starknet would scale Bitcoin, to the product rollouts of March 2025, the path has been clear. BTCFi on Starknet is where that momentum now leads 🧵
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Meet the next sponsor of the Starknet Re{solve} Hackathon: @OpenZeppelin As the leading open-source platform for smart contracts & security audits, they’ll be helping our builders create safer, stronger applications.
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OpenZeppelin Cairo Contracts for @Starknet v3.0.0-alpha.2 is here and brings some key upgrades 🛠️ • MetaTransactionV0 preset for calling legacy v0 accounts from v3 transactions • New ERC2981Admin trait built based on the AccessControlDefaultAdminRules extension • Refactored macros to the new v2 syntax Check out the full release notes and start building: github.com/OpenZeppelin/cair…
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OpenZeppelin Contracts for @Starknet Cairo just dropped fresh updates 💥 • AssetsManagementTrait adds ExternalVault support to ERC4626 for flexible asset handling • Refactored FeeConfigTrait for ERC4626 enables dual fee charging in shares or assets • New openzeppelin_interfaces package for stable dependency management github.com/OpenZeppelin/cair…
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OpenZeppelin Contracts for @Starknet Cairo just got an update 👀 Our first alpha release since the audited v2.0.0 adds enhanced admin role management and improved voting & governance modules. Check it out and help us shape v3: github.com/OpenZeppelin/cair…
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The OpenZeppelin Cairo Contracts Library v2.0.0 is here! More contracts, more standards, more power for @Starknet builders 🪄
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