TL;DR

• The sum of all funds locked on Ethereum converted to USD is $10.41 B at the time of writing.
• Arbitrum DAO rejected ratification vote to set up Foundation but a 7.5% token allocation was already sent to Foundation with 10M ARB sold for expenses & 40M ARB loaned to a market maker, new proposals for the Foundation budget & lockup and reduce proposal token threshold. Case Study — Radiant x Arbitrum x Chainlink. Deposits Locked, Withdrawals Minted: This article presents a high-level technical overview of the validator withdrawal process in Ethereum Proof of Stake. Custom Webhooks are live for all Arbitrum developers.
• The Graph continues to scale with L2. Phase 2 is complete: 5% of indexing rewards are now available on Arbitrum.
• RetroPGF Round 2 Results: RetroPGF 2 is the Collective’s next experiment in allocating public goods funding. In this round, approximately 70 badgeholders — early “citizens” voted to allocate 10M OP. The results are in. Karl Floersch dropped an extended, more technical and in-depth video version of his Superchain talk first delivered at Ethereum Denver. Learn all about the Superchain architecture here. Season 4 of Optimism Governance is just around the corner and it introduces some exciting new foundational concepts in the spirit of improvement and iteration. Learn all about Intents, Missions, and Alliances in the thread. Last week’s episode of OP Radio.
• Metis Andromeda 2023 Roadmap: Metis is building the first-of-its-kind Hybrid rollup for Ethereum, poised to be delivered after decentralizing the sequencer. The first virtual edition of Metis BUIDL Hour, featuring Cookbook on April 20th. Tech Diaries: Gas Fees.
• What’s Really Happening on Polygon zkEVM Mainnet Beta? Now that Polygon zkEVM Mainnet Beta is live, narratives about what zkEVMs and other Ethereum L2s might do have become much less important than the realities of what devs and users are experiencing. ‍Polygon Labs will work to gather and consistently share info about what is actually happening with Polygon zkEVM: key metrics, details of the dev experience, any technical changes to Polygon zkEVM, network downtime and any other issues. Community Policy Initiative №1 at Polygon Labs: So the Polygon Labs Policy Team has started a database collecting various use cases across a number of verticals (and across any and all networks), and they plan to make it public for anyone to use and consult. Regen Network launches bridge to Polygon with Toucan Protocol. Eleos Labs brings FailSafe anti-theft and fraud detection solutions to Polygon. Learning from the past to secure the future.
• Deploying Uniswap V3: A developers guide to Navigating the Complexities. Boba Network’s multichain L2 solution, Boba BNB, is on fire: With a jaw-dropping 9883.46% increase in transactions since Jan 2023 & nearly 13K new wallets. Boba BNB surpassed 1 million total transactions. Boba Network proudly announces partnership with ROVI protocol. Capital Dex has launched $BOBA farms.
• Level Up Your Gaming Experience with Boba Network and NOWPayments.
• Aztec Connect on Ethereum has been sunset. But a version of Aztec Connect on Scroll may yet rise. Missed ZK Summit? Catch Aztec Applied Cryptographer Innokentii Sennovskii’s talk on cutting-edge fuzzing techniques to expose and squash bugs in Aztec’s proving systems. Aztec Developer Office Hours Interest Form: Join Aztec open developer office hours every Thursday at 10 am ET / 3 pm UTC. Communication Abstractions | Aztec Docs.
• Watch StarkWare's latest episode of STARK @ Home about Cairo 1.0 — the why, the what, and the how. StarkWare announced a strategic investment in the Influence on-chain game. Class Lambda issued their activity Recap which includes a lot of Cairo 1.0 stuff. Furthermore, they are also working on a Sierra <> MLIR compiler. Asten finished his exploring series about the Cairo 1.0 programming language with a masterpiece around mutability, ownership and borrowing. Starknet Prague #1 on April 24. Twitter Space: Designing community-led AMM on Starknet ft. @JediSwap.
• A new zkSync Era audit report by Halborn. Ramp became the first fiat-to-crypto on-ramp to support direct purchases into zkSync Era. DIA has integrated its oracle infrastructure with zkSync Era Testnet. Developers can access DIA’s transparent and customizable price feeds for 3k+ tokens, 18k+ NFT collections, randomness, and more. Why zksync for gaming: A thread. Five new projects are a part of the fast-growing zkSync Era ecosystem.
• Immutable’s Liquidity Strategy in Web3 Gaming: In Immutable’s latest community town hall, Immutable co-founder and President, Robbie Ferguson, shared Immutable’s vision for a future where NFTs will tokenize the world and how Immutable’s liquidity strategy will be the core component in making this future a reality. IMX Rewards — Web3 Disrupting Loyalty Programs: Diving into the evolution of loyalty programs and IMX rewards, this blog examines key lessons to refine and amplify web3’s potential for mainstream adoption. What is the $IMX Crypto Token and How is it Used?
• Canada Wind Down: dYdX is winding down user access from Canada. With the refreshed Epoch format you can read the blog and download the Epoch 21 deck. A second snapshot vote concluded: The community has voted to migrate the forums from Commonwealth to Discourse. dYdX Grants Review & AMA — Mahesh (Karma). Bitcoin Dominance: What is it and why is it important for cryptocurrency traders? dYdX’s latest academy post explains everything you need to know about this market indicator.
• Loopring Quarterly Update (Q1/2023): The first edition of four for 2023 Loopring Quarterly Updates. Check out the knowledge base for all things Loopring L2.
• According to the latest recap, the Scroll team spent more time on some infrastructure improvements last week, including bridge history improvements. Passed 4 full weeks of incident-free uptime on Scroll Alpha. Scroll launched its new ecosystem page: scroll.io/alpha/ecosystem. Gave a lecture on zkEVM design.
• Rhino.fi integrates Sommelier vaults into its DeFi Aggregator. Real yield USD lands on rhino.fi. What is the real yield in crypto?
• ZKSpace built a partnership with SaaSGoS.
• Intro to MEV on Layer 2 sequencers.
• PLONKish ZK-SNARK explainer.
• zkTree: zk recursion tree with ZKP membership proofs.
• Ideas for a Nova-based zk VM.
• eSTARK: extending STARKs with arguments.
• Testudo: near linear-time prover SNARK with smaller setups.
• Paribus ~$100k exploit on Arbitrum, reentrancy of Compound v2 fork.
• Sentiment ~$1 million exploit on Arbitrum via read-only reentrancy, funds returned minus $95k.
• A comparison of zkEVMs — HackMD.
• The Sushi DeFi Kitchen Event. — Panel 4: The DeFi Kitchen Summit — Future of Scaling Solutions (L2s).
• L2 stats. Check out how much it costs to use Layer 2.
• And more!

Stats

• The sum of all funds locked on Ethereum converted to USD is $10.41 B at the time of writing.

Source.

Source.

How much does it cost to use Layer 2?

Source.

Optimistic rollups

Source.

Arbitrum One

• Arbitrum DAO rejected ratification vote to setup Foundation but 7.5% token allocation already sent to Foundation with 10M ARB sold for expenses & 40M ARB loaned to market maker, new proposals for Foundation budget & lockup and reduce proposal token threshold.
• Case Study — Radiant x Arbitrum x Chainlink.
• Deposits Locked, Withdrawals Minted: This article presents a high-level technical overview of the validator withdrawal process in Ethereum Proof of Stake.
• Custom Webhooks are live for all Arbitrum developers.
• The Graph continues to scale with L2. Phase 2 is complete: 5% of indexing rewards are now available on Arbitrum.

🚀Live on Arbitrum:

• Lodestar Finance is live on Arbitrum.
• Sentio has officially supported Arbitrum.
• Bluefin’s first trading competition on Arbitrum is now live.
• Wombex is live on Arbitrum.
• Welcoming PocketBuff exclusively on Arbitrum Nova.
• Dragons Crossing will be launching on Arbitrum.
• CoinTracker launched Arbitrum One support.
• Welcoming Mmagpie to the Arbitrum ecosystem.
• Uniswap released their new mobile wallet, which includes support for Arbitrum.

Projects based on Optimism’s codebase

Optimism

• RetroPGF Round 2 Results: RetroPGF 2 is the Collective’s next experiment in allocating public goods funding. In this round, approximately 70 badgeholders — early “citizens” voted to allocate 10M OP. The results are in.
• Karl Floersch dropped an extended, more technical and in-depth video version of his Superchain talk first delivered at Ethereum Denver. Learn all about the Superchain architecture here: Building the open source internet with the Superchain.
• Season 4 of Optimism Governance is just around the corner and it introduces some exciting new foundational concepts in the spirit of improvement and iteration. Learn all about Intents, Missions, and Alliances in the thread.
• Last week’s episode of OP Radio.

Metis Andromeda

• Metis Andromeda 2023 Roadmap: Metis is building the first-of-its-kind Hybrid rollup for Ethereum, poised to be delivered after decentralizing the sequencer.
• The first virtual edition of Metis BUIDL Hour, featuring Cookbook on April 20th.
• Tech Diaries: Gas Fees.

Boba Network

• Deploying Uniswap V3: A developers guide to Navigating the Complexities: The research in this article is provided by Enya Labs as part of their contributions to Boba Network.
• Boba Network’s multichain L2 solution, Boba BNB, is on fire: With a jaw-dropping 9883.46% increase in transactions since Jan 2023 & nearly 13K new wallets.
• Boba BNB surpassed 1 million total transactions.
• Boba Network proudly announces partnership with ROVI protocol.
• Capital Dex has launched $BOBA farms.
• Level Up Your Gaming Experience with Boba Network and NOWPayments.

Zero-knowledge rollups

Source.

Aztec

• Aztec Connect on Ethereum has been sunset. But a version of Aztec Connect on Scroll may yet rise.
• Missed ZK Summit? Catch Aztec Applied Cryptographer Innokentii Sennovskii’s talk on cutting-edge fuzzing techniques to expose and squash bugs in Aztec’s proving systems.
• Aztec Developer Office Hours Interest Form: Join Aztec open developer office hours every Thursday at 10am ET / 3pm UTC.
• Communication Abstractions | Aztec Docs.

Loopring

• Loopring Quarterly Update (Q1/2023): The first edition of four for 2023 Loopring Quarterly Updates.
• Check out the knowledge base for all things Loopring L2.

Polygon

• Polygon zkEVM: Results of Spearbit’s Security Audit
• What’s Really Happening on Polygon zkEVM Mainnet Beta? Now that Polygon zkEVM Mainnet Beta is live, narratives about what zkEVMs and other Ethereum L2s might do have become much less important than the realities of what devs and users are experiencing. ‍Polygon Labs will work to gather and consistently share info about what is actually happening with Polygon zkEVM:

✅ Key Metrics

✅ Details of the Dev Experience

✅ Any technical changes to Polygon zkEVM

✅ Network downtime and any other issues

• Community Policy Initiative №1 at Polygon Labs: So the Polygon Labs Policy Team has started a database collecting various use cases across a number of verticals (and across any and all networks), and they plan to make it public for anyone to use and consult.
• Regen Network launches bridge to Polygon with Toucan Protocol.
• Eleos Labs brings FailSafe anti-theft and fraud detection solutions to Polygon
• Learning from the past to secure the future.

🚀Live on Polygon:

• Check out the latest Polygon integrations here.

Scroll

• According to the latest recap, the Scroll team spent more time on some infrastructure improvements last week, including bridge history improvements.
• Passed 4 full weeks of incident-free uptime on Scroll Alpha.
• Scroll launched its new ecosystem page: https://scroll.io/alpha/ecosystem
• Gave a lecture on zkEVM design.

StarkWare

• Watch StarkWare latest episode of STARK @ Home about Cairo 1.0 — the why, the what and the how.
• StarkWare announced a strategic investment in the Influence onchain game.
• Class Lambda issued their activity Recap which includes a lot of Cairo 1.0 stuff. Furthermore, they are also working on a Sierra <> MLIR compiler.
• Asten finished his exploring series about the Cairo 1.0 programming language with a masterpiece around mutability, ownership and borrowing.
• Starknet Prague #1 on April 24.
• Twitter Space: Designing community-led AMM on Starknet ft. @JediSwap.

🚀Powered by StarkWare:

• A continually updated list of projects building on StarkNet.
• Expectium Protocol is the first decentralized information market project on Starknet.

zkSync

• A new zkSync Era audit report by Halborn.
• Ramp became the first fiat-to-crypto on-ramp to support direct purchases into zkSync Era.
• DIA has integrated its oracle infrastructure with zkSync Era Testnet. Developers can access DIA’s transparent and customisable price feeds for 3k+ tokens, 18k+ NFT collections, randomness and more.
• Why zksync for gaming? A thread.
• Five new projects are a part of the fast-growing zkSync Era ecosystem.

ZKSpace

• ZKSpace X OKX QuestN Free DID Giveaway Winners.
• ZKSpace built a partnership with SaaSGoS.

Projects built using StarkEx

dYdX

• Canada Wind Down: dYdX is winding down user access from Canada.
• With the refreshed Epoch format you can read the blog and download the Epoch 21 deck.
• A second snapshot vote concluded: The community has voted to migrate the forums from Commonwealth to Discourse.
• dYdX Grants Review & AMA — Mahesh (Karma).
• Bitcoin Dominance: What is it and why is it important for cryptocurrency traders? dYdX’s latest academy post explains everything you need to know about this market indicator.

Validium

Source.

Projects build using StarkEx

rhino.fi (previously DeversiFi)

• rhino.fi integrates Sommelier vaults into its DeFi Aggregator.
• Real yield USD lands on rhino.fi
• What is real yield in crypto?

Immutable X

• Immutable’s Liquidity Strategy in Web3 Gaming: In Immutable’s latest community town hall, Immutable co-founder and President, Robbie Ferguson, shared Immutable’s vision for a future where NFTs will tokenize the world and how Immutable’s liquidity strategy will be the core component in making this future a reality.
• Games Spotlight: Gods Unchained Spices Up Game Mechanics with New Set Band of the Wolf: In the latest, thrilling expansion to the world of Gods Unchained, a ragtag group of mercenaries known as the Band of the Wolf, joins forces with the villagers of Raneko to combat a mysterious new threat: the ruthless Hortuk and his barbaric Cult of Order.
• IMX Rewards — Web3 Disrupting Loyalty Programs: Diving into the evolution of loyalty programs and IMX rewards, this blog examines key lessons to refine and amplify web3’s potential for mainstream adoption.
• What is the $IMX Crypto Token and How is it Used?

MISC

• Intro to MEV on Layer 2 sequencers.
• PLONKish ZK-SNARK explainer.
• zkTree: zk recursion tree with ZKP membership proofs.
• Ideas for a Nova-based zk VM.
• eSTARK: extending STARKs with arguments.
• Testudo: near linear-time prover SNARK with smaller setups.
• Paribus ~$100k exploit on Arbitrum, reentrancy of Compound v2 fork.
• Sentiment ~$1 million exploit on Arbitrum via read-only reentrancy, funds returned minus $95k.
• A comparison of zkEVMs — HackMD.
• Panel 4: The DeFi Kitchen Summit — Future of Scaling Solutions (L2s):

That’s all for today! Your feedback is highly appreciated! Let us know what you think about the format & content.

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