Declan Fox

"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

@patron4eg Correct assumption on the liquidity buffer. Security is a number one priority for Yield Boost hence the cautious rollout. We are also monitoring the staking queue closely. Sharplink deposits are in weETH so entirely separate to the native ETH balances on LM.

Even now, the Linea canonical bridge holds around $120M in ETH, despite the extremely weak crypto market and the currently low activity across the Linea network. You can verify this directly in the contract: 0xd19d4b5d358258f05d7b411e21a1460d11b0876f In my view, the first NativeBoost rewards may appear already in early April. This is because new terms of service come into effect on March 28, where: • all risks related to using NativeBoost are fully transferred to the user • users waive participation in class action lawsuits Legal changes like this are typically introduced right before launching yield-generating financial mechanisms. Now let's estimate what kind of capital flow this could bring to the Linea ecosystem. My assumption is the following: • around 70–80% of the ETH in the canonical bridge will be sent to staking • the remaining funds will act as a liquidity buffer for fast withdrawalsLet's take a conservative scenario. Total ETH in the bridge $120,000,000 Share allocated to staking 70% 120,000,000 × 0.7 = $88,000,000 Current Lido yield is roughly in the range of 2.4% - 3.1% annually Let's take the average value: 2.75% Annual yield 88,000,000 × 0.0275 = $2,420,000 Monthly yield 2,420,000 / 12 ≈ $202,000 So roughly $200k per month could flow into the Linea DeFi ecosystem. For comparison: • current incentives in the network are close to zero • Etherex currently generates around $100k in monthly feesEven if the entire NativeBoost yield were directed only to Aave and Euler, it could significantly increase: - TVL - user activity - trading volumes on Etherex P.S. And all of these calculations assume ETH at $2000. If the ETH price increases, the reward flow will scale accordingly. The remaining key question is:how much of these rewards will be captured by Sharplink, and whether retail users will receive any meaningful share. #LINEA $LINEA #ETHEREX #REX $REX $REX33 #Sharplink @LineaBuild @Sharplink @etherexfi @joechalom

The $LINEA claim window for MetaMask Rewards has come to a close. 🔥 The remaining 380M tokens that were not claimed will be burned. 🔥 Thank you for participating!

Stablecoin rules in the UK are being finalized, and are at risk of preventing the UK from being globally competitive in the digital economy. For example, the Bank of England is proposing a cap on stablecoin holdings for individuals and businesses. The UK has a long history of being a financial hub. Embracing and encouraging innovation, especially when other countries are moving fast here, is important for maintaining that. The current direction of the rules does the opposite, and will act as an innovation blocker. If you're from the UK you can sign the petition by @StandWCrypto_UK to set out a pro-innovation strategy for blockchain and stablecoins. Link below.

We're thrilled to introduce the EEA Privacy Working Group! This group brings together industry leaders to provide clear guidance on privacy technologies for enterprises deploying on Ethereum and L2s. Initial contributors: > @AppBlockchain > @Consensys @LineaBuild > @COTInetwork > @EYnews (Nightfall) > @0xPolygon > @zksync > @Kaleido_io > @ethereumfndn Covering ZK Proofs, TEEs, MPC, Garbled Circuits, these are real solutions for finance, healthcare and supply chains.

This much is clear: the future of Trust will be coordinated using EVM

Announcing the Platform team a new team at the EF with one goal: deliver the strongest possible Ethereum platform, where L1 and L2s are best positioned to support users, apps, and all groups building on Ethereum see more in link below & stay tuned for updates 🫡

@tkstanczak Incredible job, Tomasz!

I am stepping down from my co-ED role at the EF at the end of February 2026. Bastian Aue is taking over the co-ED role alongside Hsiao-Wei. The future is bright for builders, for Ethereum, for the EF, and for me. I wrote a longer blog post (link below). I will answer all of your questions here, at ETHDenver, and during podcasts and AMAs that will be there over the next few days. blog.ethereum.org/2026/02/13/tom…

At Linea, we don't just use gnark, we build it. Vortex polynomial commitments now benchmarked at: - 3.7× faster than Plonky3 FRI (CPU) - 9.6× GPU boost on commit - 35.8× GPU boost on open Thanks to @AntChainOpenLab for the hardware acceleration work and to our cryptography team @gnark_team.

Currently at @DAF_Global, as we further solidify our strategic partnerships and open the gates for new institutions ready to fully commit to the Ethereum & Linea ecosystem. The upside couldn't be more clear on the compounding adoption of institutional-grade trustware