Highlights
Holešky testnet forked to Fusaka on October 1.
Erigon discontinuing official support for Polygon PoS.
New Cairo M Design Document.
New deep dive on MonadBFT.
AllCoreDevs Update
The first testnet running Fusaka is out, with Holešky forking on October 1. This not happen without difficulties, however, as there were periods of low participation soon after the fork. Moreover, the first blob-parameter-only (BPO) fork is happening tomorrow.
So, while there are still issues to monitor and iron out with regard to Fusaka, the focus of ACD calls is now shifting towards Glamsterdam. Hence, much of the discussion last ACDC was around a decision regarding ePBS (initially called Enshrined Proposer-Builder Separation, now sometimes called execution payload-block separation) and whether payload-block separation and trustless payments (from the builder to the proposer). Namely, Lin Oshitani of Nethermind Research proposed that payload-block separation and trustless payments should be treated as two separate items. The core devs have not settled on this issue and it’s been deferred.
Beyond that, there is a new update to EIP-7723 that defines a “Champion” role for EIPs that are proposed for a hard fork. In short, if you open a PR to insert an EIP as “Proposed for Inclusion” to the hard fork, then you will be considered the primary point of contact for it aside from cases where that task is delegated.
Ethereum News & Discussion
Ellie Davidson, formerly of Espresso Systems, has joined the Ethereum Foundation as a researcher working on fast finality.
Andy Guzman of PSE posted about what appears to be ZK-Kit’s new X account and website.
Check out the new Ethproofs Day website for the event at Devconnect.
L2 Interop Working Group had their Call #15 on October 1. Check out the call summary here.
Erigon is discontinuing official support for Polygon. Find the blog post on this here.
Barnabé Monnot and Joshua Rudolf joined Li.Fi on a call discussing improving interoperability UX.
Will Corcoran shared a thread on the PQ workshop at Cambridge.
A new Ethereum Community Hub will be opening in London, England. Their kickoff celebration will be on October 10.
The Ethereum Foundation blog released the sixth issue of their Checkpoint series.
The Ethereum Foundation announced new leadership surrounding privacy initiatives.
Research Update
Toward Semantic Block Chunking by Toni
Semantic payload chunking reframes Ethereum blocks as sequences of independently verifiable execution chunks with separate chunk access lists containing state diffs, enabling streaming validation, bounded-per-chunk computation, and potential parallelization and per‑chunk proofs while preserving block atomicity via a two‑phase validity check that distinguishes individual chunk validation from final state transition verification.
Ethereum needs Standards-Punk by SCBuergel
Ethereum’s widespread, silent inconsistencies in the critical eth_getLogs RPC—stemming from inadequate, unenforced standards and shallow testing—are corrupting application correctness and accelerating centralization, warranting a formal, versioned RPC standards and conformance body focused first on eth_getLogs, massive scale differential and history-sensitive test fixtures, and accountability mechanisms (release gating, funding tie-ins, public dashboards) to restore deterministic, reproducible interoperability.
Best of Both Worlds? A Measured Review of Non-Interactive ZK Fraud Proofs by GCdePaula
In adversarial, permissionless settings, non-interactive ZK fraud proofs fail to deliver the claimed “best of both worlds,” exhibiting linear-cost Sybil and censorship vulnerabilities that erode 1‑of‑N liveness, impose ZK-like proving capacity and capital burdens that scale with throughput, and create wasteful coordination races—leaving state-of-the-art interactive fraud proofs comparatively superior under the shared threat model.
New EIPs/ERCs
EIP-8032 – Tree-Depth-Based Storage Gas Pricing
ERC-8033 – Agent Council Oracles
ERC-8034 – Referable NFT Royalties
ERC-8035 – MultiTrust Credential – Verifiable Reputation Interface (Core)
ERC-8036 – ZK Presentation Interface for MTC
ERC-XXXX – Onchain Metadata for Multi-Token and NFT Registries
ERC-XXXX – Standard ZK Proof Verification Interface for Smart Contracts
Client and Client-Related Updates
Erigon released v3.2.0
They posted a thread here.
lodestar released v1.35.0-rc.2
lighthouse released v8.0.0-rc.0
prysm released v6.1.1
Reth released v1.8.2
Besu released 25.10.0-RC2
nethermind released 1.34.1
rollup-boost released v0.7.6
mev-boost released v1.10-alpha5
commit-boost-client released v0.8.1-rc.3
Tooling, Languages & Libraries
solx released 0.1.2
Foundry released v1.4.0-rc2
porto released 0.2.23
Ape released 0.8.38
alloy released v1.0.37
solar released 0.1.8
Solarity released v3.2.7
L2s and EVM Alt-L1s
The Cairo M Design Document by Kakarot has been released.
See a deep dive by tcoratger here.
Base Mainnet will be underdoing the Superchain U16A upgrade on October 7.
Flashblocks are now live on OP Mainnet.
Sophon launched Sophon Account v2, a “modular account system”.
0xnagu released a deep dive on MonadBFT. See the X thread here.