Here we report on the progress of the leading builders in the ZK @ethereum ecosystem, documenting recent significant releases, technical breakthroughs and general updates ‍Featuring: @Starknet, @StarkWareLtd, @zksync, @0xPolygon, @taikoxyz, @Scroll_ZKP, @LineaBuild, @ZircuitL2, @MantaNetwork, @aztecnetwork, & @HelloTelos 👇

Aztec 🔹 Testnet 🔹 @aztecnetwork has launched its Adversarial Testnet, a new phase of its public testnet aimed at stress-testing its decentralization and security: Key features include slashing for malicious validators and fully decentralized governance. With nearly 1,000 sequencers across 15,000 global nodes, the network will simulate attacks and governance upgrades. Participants can join six challenge categories and track performance via Dashtec, a community dashboard offering validator insights. 🔹 Media 🔹 At Noircoin2 in Berlin, Aztec co-founder @jaosef joined @HouseofZK to discuss the network’s seven-year path from early DeFi goals to creating a privacy-focused, decentralized L2. Joe highlighted Aztec’s origins, @NoirLang’s role in programmable privacy, and how their testnet enables real-world ZK use cases like digital ID and open banking: House of ZK also welcomed @KelseyRuiz_, Head of Comms at Aztec, to our San Francisco event. Kelsey spoke about executing high-impact crypto PR, sharing insights from her work with Ethereum Classic, @cosmos, @Consensys and Aztec - covering narrative design, media strategy, announcement timing, and aligning PR with product milestones: Finally, Aztec Engineer @maximvezenov joined @alicelingl and @pavel_sinel on where they covered the design of Noir, a domain-specific language for ZK circuits: They discussed Noir's backend-agnostic approach, abstraction trade-offs, privacy features, constraint optimization, developer tools, and the challenges of infrastructure in building scalable, privacy-focused applications.

ZKsync 🔹 Integrations 🔹 @zksync has connected its Era mainnet to the ZKsync Gateway - a key step toward native interoperability within its Elastic Network: The Gateway enables secure messaging and proof exchange between ZKsync Chains, enabling shared liquidity and atomic transactions. 🔹 Tech 🔹 @zkSyncDevs have released React Native and Swift SDKs for their Single Sign-On (SSO) system, enabling seamless web3 onboarding in mobile apps: The SDKs allow integration of smart wallets using login credentials - no seed phrases or external wallets needed. Users can authenticate and approve transactions with biometric passkeys like Face ID. Tutorials and sample apps are now available for testing. Finally, @solx_compiler v.0.1.1 has been released, with major improvements in speed and efficiency: Compilation is now up to 9× faster using --via-ir, with notable reductions in gas usage and bytecode size. Compared to solc, gas savings reach 5-6%, and some projects see up to 30%. Bytecode is also significantly smaller, making it ideal for size-sensitive deployments.

Polygon 🔹 RWA 🔹 @0xPolygon has enabled Spain’s first fully regulated onchain security token offering with the launch of @Betoken_io: Representing real equity in Beself Brands, BeToken operates under CNMV oversight and uses the ERC-3643 standard to embed compliance into every transaction. The initiative reflects a broader trend in Europe toward regulated digital assets and shows how blockchain infrastructure is being used for compliant equity issuance. 🔹 Integrations 🔹 The project has been also selected by @checkercorp as its preferred blockchain to enhance stablecoin and FX liquidity: The partnership targets faster, cheaper, and more reliable financial transactions for institutions. Focused on emerging markets, it aims to streamline remittances, trade, and payroll by leveraging Polygon’s scalability, low fees, and near-instant settlement capabilities for global payments use cases. 🔹 Events 🔹 Held at @UCBerkeley during SBC, @BrianSeong99 of Polygon Labs co-hosted a session as part of the @WPReadingClub and @HouseofZK Whitepaper Readings, contributing to discussions on ZK, consensus, and protocol design.

Taiko 🔹 Partnerships 🔹 @taikoxyz announced two new partnerships: 🔹 @Dune: Integrated to make Taiko’s onchain data fully accessible and actionable through customizable dashboards. This allows the community to track ecosystem growth, governance health, and dApp adoption across 100+ protocols in real time: 🔹 @boundless_xyz: Supported development of The Signal, an open-source ZK consensus client for @ethereum, helping extend verifiable Ethereum consensus to any rollup or chain: 🔹 Tech 🔹 @gwyneth_taiko is introducing the Gwyneth RPC router to streamline development of multichain applications: It acts as lightweight middleware, routing JSON-RPC calls to the correct chain through a single endpoint. Developers can use a stateful design for easier switching or a stateless mode by passing chainId in each call. This reduces manual setup, simplifies infrastructure, and improves both user experience and app reliability across chains.

Scroll @Scroll_ZKP now powers @mossethereum’ onchain treasury and operations through @ether_fi Cash: The publicly listed company moved its ETH holdings from Lido and adopted corporate card system to unlock liquidity while maintaining control. With fast, gasless transactions and non-custodial infrastructure, Moss can spend, borrow, and manage funds entirely onchain - highlighting a broader shift toward scalable, @ethereum-native financial systems for institutions. Scroll has also announced Cloak, a new privacy-focused infrastructure for institutional DeFi: Designed to address issues with current privacy tech - such as high costs, slow speeds, and non-compliance - Cloak offers confidential transactions, programmable accounts, and fast settlement with compliance support. Using a permissioned sequencer and ZKPs, it ensures data privacy and auditability. An MVP is live on testnet, with full launch planned soon.

Linea 🔹 Tech 🔹 @LineaBuild has launched @etherexfi, a decentralized exchange developed in collaboration with @Consensys and Kingdom, the team behind @NileExchange: Built to boost liquidity across Linea and @ethereum, Etherex introduces a liquid ve(3,3) model with its REX33 token. Users can trade, vote, and earn without lock-ups. Deep @MetaMask integration ensures seamless swaps, while emissions are directed to the most efficient liquidity pools through community voting. 🔹 Staking 🔹 The project unveiled ETH-native staking, a protocol-level ETH burn, and a token model with 85% allocated to ecosystem growth: Launching by October 2025, 20% of ETH transaction fees will be burned, and staking rewards reinvested. A new Ethereum-aligned consortium, including @ensdomains, @eigen_labs, @SharpLinkGaming, @ethstatus and Consensys will manage Ethereum’s largest ecosystem fund, driving long-term development and alignment with Ethereum’s core values. They also announced a new feature that will let bridged ETH automatically earn Ethereum-native staking rewards via @LidoFinance v3. These rewards will fund liquidity incentives, giving users dual returns without added risk or friction: