Ethereum Research Daily

September 23, 2026

• frame transaction alternative mempools ERC
• FCR security
• Privacy Pools network observer privacy
• post-Poseidon hash choice
• EIP-8360 TCREATE accounts

forshtat submitted a draft ERC for "Frame Transaction Alternative Mempools", another propagation path for frame transactions that do not meet the public mempool rules. Julian Ma explained how the Fast Confirmation Rule (FCR) stays secure: FCR is an algorithm clients run locally rather than something read from the chain like finality. L2BEAT rated Privacy Pools green on link privacy against the network observer, thanks to custom RPC support in its frontend. khovratovich discussed which hash function Ethereum should use now that Flock exists.

September 22, 2026

• Nethermind 2.0.0
• EIP-8081 records ACDC #187 decisions
• AA-compatible solver ERC
• EIP-8297 reserved bytes
• core development funding

Nethermind client 2.0.0 shipped with a new way of storing state: archive nodes drop from about 30 TB to about 2 TB, operators choose how much history to keep, and blocks process 2 to 3 times faster than the previous release on a fresh node. EIP-8081 merged the ACDC #187 decisions. fede_intern argued most Ethereum core engineering teams may disappear within three years, sparking another round of discussion on client funding.

September 21, 2026

• EIP-8250 validation-prefix restore must not revert approval
• L2BEAT privacy adversary model
• Etheorem Lean 4 consensus specs
• post-Glamsterdam one-dimensional fee market
• ACDT #97

EIP-8250 merged a safety fix: when a `POST_TX` assertion fails, the validation prefix is restored and the transaction body discarded, but the transaction stays valid and included, and in that case the effects of a payment-scoped `APPROVE` must not be reverted either, so the nonce is spent only once. L2BEAT launched a feature assessing "private from whom" for each privacy protocol against 5 adversaries. Etheorem's Lean 4 consensus specs now pass the pyspec vectors on three forks, Fulu, Gloas and Heze.

September 20, 2026

• is privacy dead debate
• native L1 privacy
• EIP-8360 ephemeral account semantics
• EIP-8141 depends on EIP-7976

On Sunday a debate on whether privacy is dead broke out on X. gakonst said the main thing he thinks about is how dead privacy is from here on; Vitalik replied that "it's only dead if you give up", saying he is not giving up on privacy but doubling down; pcaversaccio argued privacy is not dead, we have just built the wrong defaults, and privacy must be part of the runtime rather than something users configure. Spec work was light.

September 19, 2026

• relayer-free reciprocal broadcast for shielded pools
• EIP-7906 per-topic-value event views
• ERC-8419 Know Your Agent
• hot wallet friction

A quiet Saturday. An ethresear proposal uses a "role bit" inside each note commitment so shielded pool users broadcast for one another, replacing the relayer market; it cites a June Railgun measurement where 1,049 self-broadcast withdrawals were linked to their depositor through the gas payer and 124 relayer-like addresses served 89% of relayed volume. EIP-7906 submitted event views keyed by topic value (merged on the 21st), making it easier to write transaction assertions by user identity.

September 18, 2026

• EIP-8250 distinguishes one-shot nonces
• EIP-8298 SETCODEFROM allowed in initcode
• EIP-7773 sets the Sepolia activation time
• threshold IBE encrypted mempool
• unified L1 and L2 liquidity

Two account-side changes: Gottfried Herold submitted a PR letting EIP-8250 tell one-shot nonces (such as nullifiers) apart from ordinary sequence nonces, and CPerezz submitted an EIP-8298 revision (merged on the 24th) allowing SETCODEFROM in initcode and requiring the source account to exist. EIP-7773 recorded the Sepolia activation time. Gottfried Herold also sketched an encrypted mempool based on threshold IBE without batch decryption.

September 17, 2026

• Glamsterdam on Sepolia October 6
• EIP-8037 and EIP-8038 repricing
• ACDC #187
• Hoodi targeting October 27
• Ethlabs quick slots article

The EF blog formally announced the Glamsterdam testnet schedule: Sepolia activates on October 6 at 13:53:36 UTC (20:53 Bangkok), and Hoodi and mainnet are undecided. The announcement told app developers to test contracts and gas estimation against the new rules, since contracts relying on fixed gas stipends, hardcoded gas limits or remaining-gas assumptions may need changes. In the evening ACDC #187 confirmed the Sepolia date, targeted Hoodi for October 27, moved EIP-8015 to CFI and saw EIP-8411 proposed for inclusion. Ethlabs published a long piece on faster L1 blocks.