Declan Fox
@DeclanFox14
Followers
14K
Following
2K
Media
79
Statuses
2K
Building @LineaBuild believe in somETHing
Joined June 2018
Personal update: I’m stepping into the role of Head of Linea at Consensys. Over the past few years as Product Lead, I’ve had the privilege of working with some of the best engineers and cryptographers in the space to help build our zkEVM stack — the tech powering @LineaBuild.
500
267
1K
ETH looking good here. Great vibes just before a big IRL event for me: getting married!. I’ll be back on 22nd, where we’ll start sharing lots of exciting Linea updates.
391
52
785
LINEA PRODUCT ROADMAP 👇. For full post, see here --> As part of our overarching mission to empower the world to live onchain, Linea is committed to building a decentralized, open-source solution that fosters collaboration across the broader
111
84
543
Every Ethereum client is a Linea client. No forks. No deviations. Which means every performance improvement to Linea, is a performance improvement to Ethereum, and vice verse. We can scale the L1 AND scale the L2 with the exact same open source software.
134
68
491
An ETH equivalent for MicroStrategy will have a 10x bigger impact than BTC. ETH is programmable money. It has yields, staking, and active participation in DeFi. This liquidity and capital ends up ONCHAIN, on L2s that are built for user adoption like Linea, and will cement.
28
46
396
ConsenSys zkEVM is such a giant leap forward for the Ethereum ecosystem, and here’s why…. 🧵.
7
55
364
Linea is a zkEVM built by Ethereum core developers to help realize the full potential of Ethereum and bring the world onchain. I would love to see Uniswap join that mission and integrate Linea in the UI. To the Linea community, please show your support on the tweet below! 👇.
The future is ✨ multichain ✨. That’s why we support 11 networks across Uniswap web, mobile and extension. What should we add next?
44
40
162
@heycape_ Making progress, but nothing is live or confirmed until it comes from the official account. Please don’t interact with anything unofficial. Stay safu.
58
31
364
Everyone wrote off Apple in the late 90s. Too slow. No vision. Out of touch. Meanwhile, they were building iPod, iPhone, OS X. The entire future. Sometimes the loudest companies win the day. The quiet ones build the decade.
171
85
345
linea.eth. believe in somETHing.
believe in somETHing.
16
24
336
I've found there are two types of projects in crypto:. The Yappers.Talk endlessly, lean on their VC relationships to drive mindshare, chase short-term objectives, drop out after TGE, operate with a nepotistic mindset, and excel at virtue-signalling. The Builders.Ship
82
24
309
HUGE MILESTONE REACHED!. For the last 30D, @LineaBuild recorded the lowest L1 cost per L2 tx of any rollup:. - Linea $0.0043.- Base $0.0046.- Blast $0.0048.- OP Mainnet $0.0055.- Arb One $0.0100.- ZKsync Era $0.0148.- Starknet $0.0260.- Scroll $0.0575. (source.
38
55
298
Been a very busy first week listening and talking with native builders, partners, and community members. Some good things to build upon. Lots we can improve, and will. I plan to share more on where we're heading over the coming weeks. Onwards.
110
19
288
@LineaBuild just dropped a huge UX unlock by adding eth_sendBundle:. - Bundled transactions (eg. approve-and-swap in 1 click, without needing EIP-7702).- Revert protection (don't pay gas fees for failed tx's).- Protection from MEV (private transactions, avoid frontrunning on your.
gm Linea dApps!.You’re about to get a major UX upgrade:.✅ 1-click approvals.✅ MEV protection.✅ Revert-safe execution.✅ ERC-20 gas payments & full sponsorship. It’s most of what EIP-7702 promises, before it even launches and with extra benefits.
39
52
287
At @LineaBuild we've worked hard to optimize our L1 cost efficiency. Checking and sorting by avg L1 cost per L2 user op over last 30D, you'll see a cost of $0.0027, the cheapest recorded by any rollup technology. The biggest bottleneck now for us is
37
37
279
The American mind cannot comprehend this. Fully regulated EURe and GBPe are now live on @LineaBuild, available to spend on @MetaMask Card today 🦊
MetaMask Card just got its first European stablecoins! 🇪🇺 🇬🇧. You can now on-ramp in Europe for free and spend $EURe and $GBPe on MetaMask Card. Tap to pay anywhere Mastercard is accepted. 🧡 @monerium
69
27
283
Prover completeness has been achieved internally!. Work on the zkEVM started in July 2021, with the first publication shared December 2021 --> Congrats to @zk_evm and the Linea arithmetization team. This handwritten zkEVM is a piece of art that will help
29
49
267
If you follow @eth_proofs there are now ~20 zkVM's but only one pure zkEVM. @VitalikButerin initiated a conversation recently around replacing EVM with RISC-V, but @alexand_belling, @zk_evm, and the @LineaBuild cryptography team at @Consensys have been working on a much bolder
While zkVMs (especially RISC-V) have recently dominated the zk-EVM landscape, Linea's direct arithmetization approach offers distinct advantages. Here's why our tech strategy stands out in the evolving zkProof ecosystem brought to you by our very own @alexand_belling. Read more:.
24
35
250
Seeing this now and looks like there was some confusion. This post was to promote HYPER for users of Hyperlane. Linea users do not qualify, unless you’ve used Hyperlane to bridge to/from Linea. Messaging could have been clearer. We will conduct a retro and will improve our.
Concerns were voiced over our last post about the HYPER claim period being closed. However, @hyperlane_fdn has extended the pre-claim until April 15th, 19:00UTC. Additional information can also be found in the following posts from @hyperlane and.
127
20
240
@zklegends @LineaBuild @Consensys Linea is part of Consensys, built and supported from within. We are not using the name, we are building under it. TGE is in the plan. We are not rushing it because it needs to be done right. The backing is real and so is the intention. You will see it play out.
73
15
214
TOP 10 PREDICTIONS FOR 2025:. 1) The top 5 leading L2s by TVL will be Stage 2 in L2Beat framework. One of them will be @LineaBuild. Ethereum FUD will then focus on L2 governance attacks. 2) All rollups will be ZK rollups. Base and ArbOne will find a way to migrate to ZK towards.
30
38
208
Bringing Ethereum to more people starts with making it easier to explore. Linea in MetaMask Portfolio is another step toward building an ecosystem that's simple, secure, and actually useful for everyday users. More to come.
The complete Linea ecosystem is now just a click away within @MetaMask Portfolio, empowering users with seamless access to explore. 🚀.
75
27
210
Linea performance features:. ✅ Parallel tx execution .✅ State diff fleet mode for RPC.✅ DA compression.✅ Proof aggregation.✅ L1 "SmartSettle" dynamic posting.⌛️ Limitless prover.⌛️ Smaller fields.⌛️ KZG batching. We are laser focused on building a high-performance zkEVM.
27
22
202
Appreciate all the kind messages 🙏🏻 . I’m on my way to Paris now for PBW to discuss some exciting partnerships. Any builders in town and want to meet, hit me up.
65
1
207
As mentioned by @nicksdjohnson on the call today, the @LineaBuild team will work towards making the Linea Stack based and native compatible. Namechain is a great candidate to be based, with strong PMF. The Linea Core team and I spent this week diving into the architecture with.
32
28
198
@LineaDegenLover Good to see the feedback. My takeaways are still to improve communication, reignite excitement around the ecosystem and raise standards across the board (we are Consensys and it’s time to show that), flip all the bears to bulls and then TGE 🫡.
113
22
197
Lot's of great content on the benefits of Pectra here for technical and non-technical audiences, where you can hear about it direct from some of the Ethereum All Core Devs. Please help share this new "Pectra Hub" with your network to spread the news on.
Pectra is coming - but what does it mean? . Our new hub is LIVE with everything you need to know! .
17
37
193
Let's see how @LineaBuild measures against VB alignment criteria. Open Source: ✅.- All code is fully permissive licensed.- A recent forum post on why OSS is non-negotiable for us Open Standards: ✅.- Linea is the ONLY L2 where you can sync a vanilla.
Making Ethereum alignment legible.
32
35
182
We've pushed an update!. Now all apps from the Linea "dapp directory" are discoverable in the MM Portfolio - Linea Explore page.
Note: Some projects listed in are missing due to a rate limit. This will be resolved asap. Also, our process for submitting and categorising new projects is being revamped and we will include the ability for community to flag inactive projects.
68
23
179
Operation “believe in someETHing” is underway. Meeting with some bright minds who care deeply about the future of Ethereum. Will be sharing updates on here . (PS if you’re tired of talk and like to ship at high velocity, then reach out to me, we’re driving Ethereum forward with.
Clearing my calendar now. 🫡 . It’s time to fulfil the vision of the World Computer.
19
23
178
@zklegends @LineaBuild We’ve earned some of this criticism but it will not define where Linea goes next. The way we’ve communicated and delivered is already changing, and what’s coming next will speak louder than anything we’ve said before. This is not the end of the story.
79
12
182
the open-source @gnark_team crypto libraries from Linea team are now being used for:. - Rollups (zkBNB).- Binance proof of solvency.- Worldcoin Groth 16 prover.- Celer zkBridge and Brevis zkCoprocessor.- Algorand.- EIP-4844 (go-kzg).- geth (EIP-2537).- Succinct labs.- Base:.
15
16
68
LET'S GOOOO!. MetaMask Card exclusively on Linea Mainnet. The future of payments is being built on scalable Layer 2's that settle to Ethereum. I've been using this Card for the last few months and it rocks. Initially available for UK/EUR --> keep an eye in your MM portfolio to.
EXCLUSIVE: @MetaMask starts rolling out its blockchain-based debit card developed with @Mastercard and Baanx. @sndr_krisztian reports.
25
31
153
For those that missed it:. “The “capital city or DAO” of the Consensys network state will be resident on Linea Mainnet.”.
27
17
164
Excited to announce… @LineaBuild. Linea ✨ is a developer ready zkEVM powered by ConsenSys and made easily accessible in MetaMask. And this is why it’s a big deal for the future of Ethereum… 🧵.
9
24
129
@CryptoHindiO @LineaBuild Fair take, and I get the doubt. I won’t hype what’s not ready. That’s the whole point of this shift. But I’m not here to disappear either. You’ll hear more soon about where Linea is heading and how we’re thinking long term. When it’s time to talk TGE and tokenomics, you’ll get.
76
7
154
@TorsadeDe @LineaBuild Thank you for sharing this.I really appreciate the honesty and care behind your words. You are absolutely right that the community deserves more clarity, and the checker is an important trust signal. It will not be delayed until TGE, but to be real with you, April is probably a.
52
19
149
PSA: at Linea we will no longer be onboarding the next 1 billion users…. …however, we will be onboarding the next 1 billion frogs 🐸. croak if you’re with me!.
79
19
126
Stage 1 coming soon to @LineaBuild… 🫡 . Stage 2 shortly after…. Then, decentralized sequencer. With a 20k+ TPS capacity, 0.1s block time, and lattice based zkEVM prover, the UX (speed, cost, security, familiarity) is going to be easy like a Sunday morning. Ethereum critics.
I take this seriously. Starting next year, I plan to only publicly mention (in blogs, talks, etc) L2s that are stage 1+, with *maybe a short grace period* for new genuinely interesting projects. It doesn't matter if I invested, or if you're my friend; stage 1 or bust. Multiple
14
19
136
@0xBreadguy @beast_ico @efrogs_on_linea are one of the most passionate communities I’ve witnessed. @NotEnoughEth is a real leader and builder of culture. The pond will be very happy with the shout out @0xBreadguy so thank you 🙏🏻 . I can hear the CROAKs coming already.
64
25
137
To confirm, @LineaBuild will be a Type-2 zkEVM. We prove EVM bytecode in-circuit without modifications. Linea testnet does not YET prove all the precompiles (Type 3) but we will have 100% coverage very soon. And all will be transparent for mainnet. 🫡.
8
13
114
@AInvestor_11 @LineaBuild There are no “tasks”, please tell your audience there is no connection between engaging with this user hub and an airdrop. It is simply to help people who want to discover apps in the ecosystem, and to help builders get distribution.
57
16
132
The self-custodial MetaMask Card is a significant milestone towards mass adoption for crypto. Millions of people globally will be creating onchain transactions for payments for everyday expenses — including a pint of Guinness and Fish & Chips! Due to the money legos of DeFi,.
I have my first purchase using my MetaMask virtual debit card (I couldn't wait for my physical card to arrive!). I used a 35 USDT price I earned from one of the regular @toad_linea lotteries to fund my card by approving a spending limit on USDC (you can use USDT and WETH too). I
20
28
131
Linea is the home network for the world. What does this mean?. It means that Linea will be the place where you can fully live your life onchain. Where your income, investments, identity are securely stored, in your control forever. Where you can meet and connect with.
19
27
130
@LineaBuild is a zkEVM rollup which proves EVM bytecode in a ZK circuit to help scale Ethereum. But how does the proof system work?. Let me explain…
5
31
107
Clearing my calendar now. 🫡 . It’s time to fulfil the vision of the World Computer.
We don't need new leadership at the EF to "fix" Ethereum, we just need to collaborate and solve the right technical problems. @DeclanFox14 @LineaBuild let's jam this week? I know there are others out there who feel the same way.
13
8
125
The roadmap of ETH is written in Linea lore. Linea chain_ID = 59144. 59144 is the coordinates of the town Eth in France.
14
9
133
Ngl but Consensys is having a moment right now:. BRAID is shaking up the Eth roadmap. MM dropped their smart wallet w/ delegations. Linea has built the best zkEVM and oss scaling solution known to crypto man. We all chill in the same (virtual) room whilst fighting the SEC.
21
14
130
30
7
131
Similar experience coming to @LineaBuild later this quarter, but for any ERC-20 token and using your MM EOA. UX acceleration.
Introducing Circle Paymaster, enabling users to pay gas fees with USDC on @arbitrum and @base. No more juggling tokens across blockchains—simply use USDC for payments, transfers, and gas fees. Learn more:
18
10
126
Earlier today, @LineaBuild Mainnet upgraded it’s throughput capacity from 24M gas to 30M gas @ 2s block time. This is part of our ongoing efforts with the @HyperledgerBesu team to scale Linea capacity and ensure tx fees remain low during current and future peak demand. Linea.
9
24
121
@community_fist We’re keeping all of that in mind as we finalize things. This is a one-time opportunity to get it right, and that’s the standard we’re holding ourselves to.
28
6
123
@SekulerTrader Q's:. - If they passed PoH first time, is it not expected they would go to the effort to pass multiple KYC as well? (This is fraud but my understanding is it still happens a lot). - Forcing people to KYC doesn't feel in line with the values of crypto. Would it be fair to make.
61
6
123
Linea Alpha v2 is THE most significant upgrade for an Ethereum Rollup in the history of rollups. time to review the data from the last few days…. 🧵….
15
20
101
The @LineaBuild core team will be contributing to FABRIC to help drive the vision of based rollups and a unified world computer. We will bring our proven qualities of execution to the table along with our experience building and operating ZK rollups, such that the roadmap for.
1/ Fabric - a community-driven effort to collectively agree upon standards/components & continue accelerating coordination to drive forward the based rollup ecosystem. ETH Research post and thread below.
13
11
117
This post inspired me to share some of the things the Linea/Consensys team has done for Ethereum:. (Note: this isn't to undermine anyone else's contributions as the more the merrier, but purely to highlight some things which I believe most folks aren't fully aware of, or at least.
I've been thinking a lot about "if you don't tell your story, others will tell it for you". So - I'm usually quiet on these topics, but I can't be quiet about this. Talking about Ethereum unification and actually doing something about it are two very different things. The.
13
17
118
HIGHER.
Our gas target is now 27.5 mGas/s. More blockspace means more TPS (transactions per second) and always low fees on Linea. Go forth and trade/build/live. onchain.
21
7
118
Let's go! 🔥🔥. Super excited to be joining forces with the ENS community to bring Namechain to life, and to support the global adoption of onchain identity solutions. As quoted by @VitalikButerin, ENS is Ethereum's most successful non-financial application, and I'm thrilled.
We are beyond thrilled to join forces with ENS. In one stroke, we welcome ENS as a contributor to Linea’s open-source development, and we, in turn, will partner with ENS to power Namechain. Together, we work toward the advancement of onchain identity.
6
14
117
My vote is against including EOF in Fusaka. As we’re building a zkEVM tech stack for Ethereum, we will always maintain compatibility with the L1, and will be directly impacted by this decision. The L1 roadmap is our roadmap. In my experience, committing a high-cost feature to.
I am still in the "disagree, but commit" mode regarding EOF. I think both the advantages and the drawbacks are highly overstated in the debate. I would love to see more input from L2s about what they think of EOF in the debate. 🧵 ITT: The real pro's and con's I see with #EOF:.
49
11
116
There's a good chance we just rawdog our way to becoming a Type-1 zkEVM later this year. Lot's of moving pieces, but it's feasible, and it will make interop a whole lot easier for chains that need to read Linea state.
14
1
115
This is only a hot take inside the CT echo chamber. Reality is most people still use MM because there is no 10x better competitor. This is not an opinion, it’s evident in the data. The fox has shipped the table stakes features recently (auto-switch, aggregated balances) and.
hot take:. metamask is still great.
56
13
110
If you’re tired of rug pulls and the casino, go sign up for the MetaMask card. Share it with your friends. Save, spend, lend, borrow, and win rewards. 1% cashback in USDC on purchases and more to come. It’s one of the few products that is materially better than existing.
34
9
113
Lunch today with @Didier_Le_Floch . He whipped out the MM Debit Card 🦊 to pay. Instant settlement, near zero fees, all on @LineaBuild . Onchain payments is here, and the UX is incredible.
21
23
86
Besu 25.2.0 is now available!!. This is a required update for Holesky and Sepolia users for the upcoming Pectra hardfork. This is an optional update for Mainnet users. Pectra scheduled for:.* Holesky: Mon, Feb 24 at 21:55:12 UTC.* Sepolia: Wed, Mar 5 at 07:29:36 UTC. Highlights:.
13
15
103
This is going to sound crazy, but we're *this* close to bringing TikTok to Linea and Ethereum. The Peoples Bid for TikTok is a consortium of technologists, investors, and leaders bidding to acquire the social media platform in the US, known as Project Liberty:.
19
20
108
Besu Linea Fleet Mode. • 2x better performance than vanilla node.• Sync in < 10 minutes.• Lower opex costs, better reliability, ultra-high performances.• Also available for Ethereum. This is a huge unlock for infrastructure like RPC providers. More info👇.
6
10
110
fraud proofs seen on mainnet = 0. validity proofs posted by @LineaBuild @zksync in production = ~1,000,000. one technology is the battle-tested future of Ethereum scaling, the other is a technical debt that holds Ethereum back.
9
13
106
For those who want to deep dive into the technicals of Linea zkEVM. Inner proof:. Outer proof. Upcoming features shared on the forum. Product roadmap latest snapshot:.
What is the best place to read and learn more about Linea proving system @LineaBuild @Consensys? It's the proving system I know the least about and I feel it will be very important moving forward.
32
14
106
Proof-of-Spend:. Spending on the MetaMask Card is going to become the most rewarding action anyone can do onchain. Each account is a high-value human that projects are queueing up to get distribution to. Better distribution for dapps, better rewards for users. A true win-win for.
This happened completely independently of the MetaMask Card team (we have implemented USDC in platform) - the MetaMask Card is the 1st card that isn't just a card it's an open platform for projects that want to reach real Proof of Humanity ppl; congrats to all who leverage this.
21
12
100
Imagine a blockchain is like a train, with each block of transactions being a train car. 🚂. - In a regular rollup, the train company (sequencer) controls which cars get added and when. - In a based rollup, anyone can add a car to the train, but they need to follow the train.
17
4
99
Should L2 tokens be issued on the L2 itself or on L1 and bridged?.
73
4
95
At Denver, I'll be delivering a talk on why everyone needs to stop complaining and believe in somETHing. Limited edition hoodies at the back so get their early.
If you work in Web3, you definitely need to believe in something. In what?. Listen to @DeclanFox14, Product Lead @LineaBuild with his keynote “Believe in somETHing" to learn 😉. 📅 February 26, Denver. The event is free, grab your ticket here:.
16
8
96
Top current bets that are still somewhat unpopular:. 1) The EVM has won. 2) Blockchains are mostly valuable for “objective money/identity” use cases. 3) 80% of all onchain activity will take place via a handful of general-purpose Ethereum rollups. 4) The majority of new appchains.
15
4
97
1 small pull request for @ethstatus .1 big step for @LineaBuild open source. For the first time, a PR has been merged to the Linea monorepo from outside the @Consensys organization. Just like Ethereum core development, our goal is for multiple people from independent businesses
5
19
94
Excited to collaborate with Etherealize and bring more institutional adoption to Ethereum. Etherealize and Linea/Consensys have a deep understanding of the TradFi audience and are well positioned to advocate for the benefits of the Ethereum ecosystem. The ticker is ETH.
INTRODUCING ETHEREALIZE. An institutional marketing and product arm for the @ethereum ecosystem. Our goal? To accelerate adoption by bringing institutions to Ethereum: the digital economy of tomorrow. All roads flow through ETH. We’ll show the world why. Here’s our plan:. (1/7).
6
11
94
@givenoxbt @LineaBuild More misinformation. We bootstrapped a new tech stack without any external funding. Our engineering team is smaller than these other Labs entities for that reason. Mainnet went live July 2023, less than 2 years ago. It has quickly become a great zkEVM tech stack proven by its.
30
7
95
To enable new types of apps and increase the total number of crypto users, we must continue to scale Rollups. Today, Linea can process up to 12Mgas/s (24M gas @ 2s blocks), making it the most scalable EVM L2, however this is orders of magnitude away from where we would like to be
11
14
87
Come learn about gaming on @LineaBuild with the @UltiverseDAO ecosystem 🦾.
📢 Join us for the @LineaBuild and @UltiverseDAO Ecosystem AMA! . 🗣️ Speakers.- Linea Product Lead: @DeclanFox14.- #Ultiverse Co-Founder: @Jimbol14.- @MetaMerge_xyz BD Lead @April1stism .- @MetaGF_ & @Bingo0x updates . 🎙️ Host: @Moon1ightSt. 📅 8 am EST, July 12th.🌍 AMA Link:
2
9
65
the next few months for Linea are going to be wild. what is about to unfold will be completely unprecedented yet obvious in hindsight.
21
8
84
In my previous company, I built a platform for Enterprises that allowed them to simply deploy a private permissioned blockchain, and then write business logic to translate their multi-party business processes onchain. We used Hyperledger Fabric for the blockchain, and then biz.
14
5
85
Just wrapped up the offsite with the team. Now for a big week at Devcon. Needless to say, you’re not bullish enough.
22
14
85
There are more Ethereum Core Developers building @LineaBuild than any other L2. Happy Friday to the cracked teams from:. @HyperledgerBesu .@ethstatus.
10
11
82
L2s are not Ethereum. Ethereum is Ethereum. L2s help scale the impact of Ethereum by creating a better UX (low fees, fast blocks, more txs) yet keeps the L1 a core part of the architecture. It’s a mutually beneficial relationship that grows the pie and is good for users. Now.
8
12
82
💯 . We will show with the Linea prover why handwritten zkEVM designed meticulously by artisans will always beat mass-market factory zkVMs at proving EVM. It’s designed for a single purpose, not generic. For everything else we want to do with ZK, then makes sense to use zkVM.
⚠️Unpopular opinion:. zkVMs should not be used to SNARKify Ethereum. We should be using zkEVMs instead. Here's why:. The rule of thumb when choosing between a generic tool vs. a specific tool is simple:. - If the task isn't of huge value (yet), use the generic tool - it's not.
8
5
84
17
9
83
@nCrizia @LineaBuild Thanks for sharing. I’ve bookmarked and will digest the proposal later.
54
4
85
@florian_huc (lead architect of Linea) kicking us off with an overview of the Linea Stack. We have a full room here at Mission Control. Special mention to the Ethereum frog sticker on the laptop
31
7
85
Multi-prover zkEVM is the fastest route to a no training wheels Rollup. A Rollup that gives businesses and consumers confidence to deploy protocols and $$$. A Rollup that accelerates web3 adoption 🚀. [THREAD].
3
18
83
@bigironchris @LineaBuild Daily reminder that LINEA token holders will have legal protections under Swiss Law.
12
5
84
Show us what you're up to on @LineaBuild and get rewarded. 2.5 ETH every week up for grabs for the best posts 🫡.
Earn up to 2.5 ETH weekly by sharing what you’re doing and building on Linea on socials!.
6
10
72