Declan Fox

@levantolabs Congrats @bigironchris @marco_derossi 👏

Meet the first AI to say ''I don't know''. We think agent mass adoption is blocked by three things: 1) weak security, 2) unreliability, and 3) how hard agents are to set up. Our first product, Sage, is focused on reliability. It's a "decision model" - a safer, faster, and cheaper way for machines to choose, act, and escalate to a human when confidence is low. You give it content (up to 32K tokens) and a list of questions (Sort, Yes/No, Choice, Tags, Scale), and Sage answers in 200ms - 9x faster than a traditional LLM - always with a confidence score attached. So yes… it's humble enough to say "I don't know." You can also turn on "grounding" to automatically run a web search and enrich the context. Under the hood: we took an open-weights LLM and fused on a classifier through post-training. It's great for agentic workflows, agentic guardrails, data pipelines, content moderation, operations, and risk & fraud. Why does this matter? Today's LLMs are great for chatbots, research, and creativity - but automation needs something much faster, with structured outputs, that isn't overconfident and is ready to admit when the signal is too weak. Sage preview is live. Excited to see your feedback. Levanto Labs is out of stealth today, founded by @marco_derossi and @bigironchris. We are hiring, reach out! Check the links in the post below 😊

Linea Insights is back 📺 Season 2 opens with @YoussefElHousn3 walking through @gnark_team, our open-source ZK library in Go, and one of the most widely used proving libraries in production. Episode 1: "What is gnark?"

Thanks for hosting a great conversation @DeFi_Dad 🙏🏻 Always a pleasure chatting with @odysseas_eth and the incredible work happening at @phylaxsystems to help protect assets onchain 💪

@ethlabs_org Great mission, great team! 💪

Announcing Ethlabs: a non-profit R&D lab for Ethereum and ETH Our mission is to make Ethereum the settlement layer of the global economy. The internet became global because shared protocols created a common language between networks. Private systems remained useful, but bounded. Finance is approaching a similar moment. As value, assets, and markets become digital, the world needs shared settlement infrastructure. Ethereum is uniquely positioned to become that shared base layer, the neutral foundation on which users, institutions, and agents can transact without intermediation. What we believe: • We believe credible neutrality matters. Ten years of uptime and the lowest counterparty risk. Ground that cannot be pulled away by any one country, institution, company, or person. • We believe ETH matters. The most valuable, programmable store of value. A decade of broad distribution, deep liquidity in onchain markets, and maximally trustless asset on Ethereum. • We believe DeFi matters. Markets, liquidity, credit, exchange, and coordination, open to anyone. • We believe adoption matters. Principles do not change the world until people benefit from them. We sit between two worlds: real usage from the builders at the frontier, and the protocol that has to support it. We work with users, applications, wallets, L2s, infrastructure teams, institutions, ETH holders, core devs and researchers, then turn what they actually need into protocol work, shared standards, infrastructure, and shipped products. Ethlabs is independent but Ethereum is a shared project. We are one node in a much larger network of stewards. This is the multi-node future. We have spent the better part of the past decade contributing to Ethereum core research and development. We are opinionated and transparent. We move with urgency, learn in public, and course-correct when we’re wrong. We are building a lean, talent-dense team for people who want to do the most important work of their careers: join@ethlabs.org

The next challenge is enabling institutions to settle assets and cash across chains without exposing sensitive data or creating new settlement risk. Linea and @bermudabayzk show that private, atomic and verifiable settlement is possible. Blog post ↓ linea.build/blog/atomic-dv…

Another great post from @joechalom and @Sharplink. It is great to see Joseph highlight the remarkable milestone of 1 million lifetime developers that have built or build on Ethereum. Joseph also touches on some key factors that will lead to the many L2s, and private permissioned Besu Ethereum chains becoming fully composable with each other and L1: credible neutrality, modularity, culture and composability. He sketches the synchronous and near-synchronous composability work that the @Linea team is doing and others including @Zisk and @gnosis_ are doing similar work. Atomic bridgeless execution zones and real-time unification of liquidity fragments will be the benefits and a unified extended Ethereum ecosystem will be the major result. ETH will be resident on all of these networks and used to pay fees for inclusion in multi-network activity to synchronizers who aggregate ZK proofs from the various networks. Ethereum is growing into an increasingly globally systemically important infrastructure, and ETH is about to also become globally systemically important as it will be the fuel and currency that powers transactions, storage, staking and many other functions on the world's main global digital asset processing and settlement layer. Amusingly, I found this my DevCon5 Osaka keynote entitled "When 1 Million Eth Devs?" We got there. And the keynote does a pretty decent job of sketching how Ethereum will become systemically infrastructure, from way back in 2019. youtube.com/watch?v=Sp8Zja…

Governance now matters as much as technology in institutional infrastructure. Open source alone is not enough, and code neutrality is what reduces dependency risk and builds long-term trust. @DeclanFox14 of @LineaBuild and @rojotek of @Consensys on the Main Stage at ETHConf.

"The biggest anti-pattern today is the belief that institutions still need their own private, permissioned L1" @DeclanFox14 at @ParisBlockWeek on the Institutional Crypto Stack. ZK proofs changed what's possible. Banks and FMIs can keep their permissioned setup and still connect to Ethereum, without giving up compliance or privacy.

Leading Ethereum stewards @Consensys and @ethereumJoseph have joined DeFi United with up to 30,000 ETH in financial support for the rsETH recovery effort, with ongoing strategic advisory from @Sharplink. Their contributions are a substantial component of the broader DeFi United effort to restore rsETH's backing and normalize market conditions, and the recovery would not be progressing as it is without them. DeFi United.

Building a zkEVM from scratch is tough, especially when writing raw arithmetization constraints by hand. At @LineaBuild, the team built ZK Assembly (zkASM), a custom assembly language to make constraint generation faster and easier. Here is how it works. 🧵👇

The @LineaBuild prover just got cheaper, faster and lighter. Our cryptography team just released Small Fields. Switching to 31-bit Small Fields (KoalaBear) + zkASM is a fundamental re-architecture of Ethereum state proving. → Proofs are now dramatically faster & lighter → RAM footprint drops and prover decentralization becomes realistic → We’re one big step closer to real-time finality No security trade-offs. Just pure cryptographic engineering. If you’re a builder working on ZK, L2 scaling or decentralized provers, this is the kind of innovation that changes what’s possible.

Linea is live across the Uniswap stack → Uniswap v2, v3, and v4 → Uniswap Web App → Uniswap API With support in Uniswap Wallet rolling out now on iOS and Android

EIP-7702 is live on Linea. Your existing wallet can now execute smart contract logic, transaction batching, gas sponsorship, session keys, account recovery, without changing your address or migrating to a new account.

🚨 Yield Boost is now officially live on Linea. We're converting idle bridged ETH into sustainable ecosystem liquidity: → Without new tokens → Without rebasing → Without renting capital Here's how it works 🧵

Welcome to the Ethereum Economic Zone (EEZ), a framework for synchronously composable rollups. What does that mean? One deployment. Shared liquidity. Single transactions across L1 & L2. Identity verified anywhere. Smart wallets connected everywhere. No additional trust assumptions. This means L2s that are as credibly neutral, economically aligned, and publicly governed as the base layer itself. EEZ furthers Ethereum as the leading decentralized economy.

Our cryptographic researcher @alexand_belling revealed yesterday at @eth_proofs that Linea is moving to RISC-V. After 3 years of directly arithmetizing the EVM, producing a 1000+ page spec and one of the most rigorous proving system in production, we’re changing course. Here’s why 🧵

@odysseas_eth @0xProject 🦾

Phylax just blocked its first live exploit attempt on Linea. An external integration misconfiguration caused some wallets to approve a 0x Settler address directly. Working with @0xProject, we deployed a targeted mitigation... and the first drain attempt was stopped! Read on

1/ How L1 and L2s can build the strongest possible Ethereum tldr: we should continue to lean into the unique capabilities of each layer, and make sure all users have a clear path to securely and seamlessly benefit from the core properties of Ethereum