• Fusaka-ready client releases.

• Linea activates its burn mechanism.

• ZKsync proposes a ZK value accrual system.

• Vitalik suggests 1-2 day withdrawal times.

Ethereum client teams Lighthouse, Geth, Teku, Erigon, and Lodestar have released Fusaka-ready versions of their clients. Fusaka is Ethereum’s next upgrade, scheduled to go live on mainnet on December 3, 2025, at 21:49:11 UTC. Node operators must update their client software ahead of the activation. Validators running MEV-Boost must also update to Fusaka-ready v1.10. Fusaka introduces 12 EIPs, delivering improvements in scaling, performance, and user experience. The headline feature, PeerDAS (EIP-7594), enables higher blob throughput, reducing L2 transaction costs. Blob Parameter Only forks will follow, designed to further expand blob capacity by gradually increasing per-block blob limits.

• Lighthouse v8.0.0 release

• Geth v1.16.7 release

• Besu v25.11.0 release

• Erigon v3.2.2 release

• Teku v25.11.0 release

• Nimbus v0.2.2 release

• Lodestar 1.36.0 release

• MEV-Boost v1.10 release

Linea activated its burn mechanism on mainnet, automatically burning 20% of net ETH gas fees from every transaction and using the remaining 80% to buy back and burn LINEA tokens. ETH remains the native gas token on the network. The surplus gas fees are collected by a dedicated fee contract, which executes both burns. Linea also retroactively burned all surplus fees accumulated since September 11, 2025, totaling about 18 ETH and 20 million LINEA burned to date. Linea is an EVM-equivalent ZK rollup developed by Consensys, designed to deepen alignment with Ethereum.

ZKsync published a proposal seeking to expand the role of its ZK token from governance to utility, including a new buyback and burn mechanism. The proposal aims to bring value accrual to the ZK token through two mechanisms: onchain interoperability fees, which collect fees from transfers between ZKsync chains and Prividiums, and offchain enterprise licensing, which brings revenue from banks and institutions licensing advanced ZK modules. Proceeds from the value accrual would flow into a governance-controlled system that buys back $ZK and allocates it toward staking rewards, ZK token burns, and treasury funding. The move aims to ensure that the ZKsync ecosystem benefits from the Elastic Network. The proposal is currently open for community feedback.

Vitalik Buterin published a forum post proposing to reduce the current 7-day withdrawal window for stage 1 optimistic rollups to 1-2 days. He explained that shortening the time window could reduce costs for liquidity providers by 3-7x. Vitalik noted that 1-2 days is sufficient to handle all issues except a 51% censorship attack, and proposed a “delay extension switch” to allow any security council member to extend the withdrawal window to 7 days or longer if needed. For stage 2 rollups, which aim for full Ethereum-level security, the 7-day window should remain

• FOCIL tx inclusion explained

• Stream Finance halts withdrawals

• Steakhouse no exposure to Stream

• Undisclosed exploits from Oct. 10th

• Balancer exploit was a rounding issue

• Balancer exploit analysis

• Webacy published Balancer vulnerability

• Espresso path to TGE

• Chainlink launches ACE

• BitMine buys 82k ETH

Disclaimer: Content is for informational purposes only, not endorsement or investment advice. The accuracy of information is not guaranteed.

• Balancer V2 suffers a $110m exploit.

• EF ESP team reopens grant applications.

• S-two prover launches on Starknet.

• ZKP2P releases V3.

Balancer, an AMM protocol and pioneer of the 80/20 weighted pool design, suffered a smart contract exploit on November 3, 2025, at 7:48 AM UTC, resulting in over $110 million in assets being drained from its V2 Composable Stable Pools and Balancer V2 forks. The hack impacted multiple chains, including Ethereum, Arbitrum, Base, Optimism, Polygon, Sonic, and Berachain. The majority of stolen assets consist of WETH and liquid staking tokens (LSTs) like wstETH, osETH, and rETH. Launched in 2021, Balancer V2 introduced a singleton Vault for enhanced capital efficiency. Balancer V2 underwent multiple audits by OpenZeppelin, Trail of Bits, and Certora. Balancer V3, deployed in December 2024, and non-composable V2 pools remain unaffected. Balancer V2 users should immediately withdraw funds and revoke token approvals.

The Balancer V2 exploit triggered various responses across affected chains and protocols to mitigate damage and freeze stolen funds. Balancer immediately paused all pausable V2 Composable Stable Pools and entered recovery mode, isolating the issue to legacy V2 infrastructure. Berachain coordinated validators for an emergency hard fork, blacklisted attacker addresses, and recovered assets from compromised pools. Sonic activated a new onchain account freeze mechanism to lock the attacker’s wallet without a hard fork, pausing affected pools. Downstream protocols like Beefy and YieldFi paused V2 integrations. Security teams from PeckShield, Nansen, and BlockSec are tracing funds, with some already blacklisted on exchanges.

The Ethereum Foundation’s Ecosystem Support Program (ESP) has reopened grant applications for Ethereum builders with a new model featuring two main grant tracks: Wishlist grants and Requests for Proposals (RFPs). Wishlist grants target broad areas of opportunity and high-level goals for the Ethereum ecosystem. RFP grants outline specific problems or opportunities with defined deliverables, timelines, and expected outcomes. ESP had paused open grants earlier to reassess priorities and ensure funding aligns more closely with the Ethereum Foundation’s strategic goals. Builders can now apply for grants across domains like cryptography, privacy, application development, security, and community growth.

StarkWare launched S-two, its next-gen open-source ZK prover written in Rust, on Starknet. S-two now proves every Starknet block, delivering 100x faster proofs and over 90% in cost reduction compared to its predecessor, Stone. The prover leverages Circle STARK technology and supports both Cairo and direct AIR definitions. S-two enables client-side proving on low-powered devices such as smartphones, supporting scalable privacy-preserving applications. It eliminates proving bottlenecks, allows anyone to sequence and prove transactions, and removes single points of failure. Future releases will include further cost optimizations.

• ACDT #60 notes

• Ethereum hits tx ATHs

• ZKP2P V3 release

• MetaMask dev hub

• Bridge Atlas episode 2

• Ethereum upgrades illustrated

• 8004 architecture outline

• Bitmine buys the dip again 

• Share goes live on Base

• Maple assets hit $500m on Fluid

Disclaimer: Content is for informational purposes only, not endorsement or investment advice. The accuracy of information is not guaranteed.

Gm frENS. Happy Thursday, you're almost through the week!

• Tuyo universal smart account.

• Fusaka confirmed for December 3rd.

• Anchor DVT client live on mainnet.

• ECF releases BlobKit v3.

Tuyo launched its Tuyo rewards program, introducing incentives for users of its self-custodial money account and wallet. Users can earn TUYO points by depositing assets into Tuyo Earn vaults, paying with the Tuyo Card, trading within the Tuyo app, and referring new users. Tuyo positions itself as a universal bank account. Tuyo is a smart wallet with support for deposits on Ethereum, Base, OP Mainnet, Polygon, and Arbitrum, and integrates with Yield, Morpho, and Aave for yield generation. Trading is powered by Relay Protocol and 0x. Tuyo is founded by former Aragon co-founder and EIP-1271 author Jorge Izquierdo. In my opinion, Tuyo looks like a promising wallet and makes onboarding a breeze for non-crypto-natives.

During this week’s All Core Devs call, Ethereum developers agreed to officially keep the activation date for the Fusaka upgrade on the Ethereum mainnet at epoch 411392, scheduled for December 3, 2025, at 21:49:11 UTC. Despite an unresolved bug discovered in the Prysm consensus layer client, developers decided to maintain the planned mainnet activation date. The Prysm bug, first identified during the Hoodi fork, was missed in testing on Holesky and Sepolia. The issue causes Prysm nodes to disconnect non-responsive peers. All client teams expect to have mainnet-ready releases available by Monday, except for Prysm. Developers also named the following consensus layer H-Star fork as Heka, with Bogotá as the execution layer upgrade. 

Ethereum client developer Sigma Prime launched Anchor on mainnet, a Rust-based distributed validator technology (DVT) client for the SSV Network. Anchor marks the second DVT client for the network, following SSV Labs' implementation, and builds on the Lighthouse Ethereum consensus client codebase.  Anchor is fully interoperable with existing clients on public testnets. SSV Network is a permissionless Ethereum staking protocol that splits validator private keys into keyshares, distributing them among multiple independent nodes. SSV Network currently powers 14% of all Ethereum mainnet validators. 

• ECF releases BlobKit v3

• Crecimiento statement

• Octant DeFi Summit Day 1

• Samsung enables ETH staking

• OP Mainnet as Enterprise Launch Pad

• Coinbase Q3 financials

• Unichain non-EVM tokens

• Bhutan accepts Ethereum payments

• BNY Mellon tokenized credit fund

There will be no daily briefing tomorrow, October 31st. Follow @ethdaily on X for the latest.

Happy Halloween!

Disclaimer: Content is for informational purposes only, not endorsement or investment advice. The accuracy of information is not guaranteed