Following its activation on Sepolia on October 6, the Glamsterdam community improve is now scheduled for the Hoodi testnet. Glamsterdam advances Ethereum’s L1 scaling roadmap with enshrined proposer-builder separation, block-level entry lists, and adjustments to gasoline pricing that higher mirror the price of execution and state progress.
The Glamsterdam community improve is scheduled to activate on Hoodi at epoch 132,352, slot 4,235,264 (October 26, 2026, 17:42:48 UTC). On the identical epoch, Hoodi’s gasoline restrict might be raised to 200M. See the activation desk under for the deployment schedule. The mainnet activation date has not but been determined.
Hoodi-compatible consumer variations might be added to the consumer launch tables as they’re confirmed. Node operators should replace each their execution and consensus layer purchasers earlier than activation.
Glamsterdam Overview
Glamsterdam combines the Amsterdam execution layer improve with the Gloas consensus layer improve. Its headlining adjustments are enshrined proposer-builder separation (ePBS) and block-level entry lists (BALs), which change how blocks are produced and validated to help higher L1 throughput.
Enshrined Proposer-Builder Separation
EIP-7732 brings the separation between block proposers and builders into Ethereum’s consensus protocol. A proposer features a builder’s dedication to an execution payload, and the builder subsequently reveals that payload. The protocol handles fee to the proposer, lowering reliance on trusted middleware for the change between proposers and builders.
The change additionally separates consensus validation from execution validation, giving validators extra time to validate execution payloads. A payload timeliness committee attests as to if the builder revealed its payload and the corresponding blob knowledge was accessible on time. Validator operators and groups sustaining builder infrastructure ought to evaluate the brand new duties and interfaces earlier than the improve.
Block-Stage Entry Lists
EIP-7928 introduces enforced block-level entry lists that file the accounts and storage areas accessed throughout a block, along with post-transaction state adjustments. These lists enable purchasers to learn state from disk in parallel, validate transactions in parallel, and compute state roots extra effectively.
Collectively, ePBS and BALs present a basis for scaling execution capability whereas retaining block validation sensible for node operators.
Gasoline Pricing and State Development
Glamsterdam adjusts gasoline accounting to higher mirror useful resource utilization. EIP-8037 will increase and individually meters the price of creating state, whereas EIP-8038 updates state-access prices. Further adjustments cowl intrinsic transaction gasoline, calldata, entry lists, and block gasoline accounting.
Software builders ought to check contracts and gasoline estimation towards the brand new guidelines. Contracts that depend on mounted gasoline stipends, hardcoded gasoline limits, or assumptions about remaining gasoline may have adjustments. See the Glamsterdam repricing influence information for the affected-contracts search and testing steering.
Developer and Validator Enhancements
Glamsterdam additionally contains ETH switch logs, a slot-number opcode, a better most contract measurement, a deterministic manufacturing facility contract, and new stack-manipulation directions. Consensus adjustments embrace forward-compatible knowledge buildings, excluding slashed validators from proposing, and elevated exit and consolidation churn. The entire scheduled EIP listing is under.
Glamsterdam Specs
EIP-7773 tracks the Glamsterdam improve. The next EIPs are scheduled for inclusion:
EIP-7773 additionally lists supporting networking and informational EIPs:
Glamsterdam Safety
The Ethereum Bug Bounty Program is lively for Glamsterdam specs and EIPs. Shopper implementations change into eligible as quickly as their releases are added to the consumer launch tables under. See the Ethereum Bug Bounty Program for extra data, together with reward multipliers and reporting necessities.
Glamsterdam Activation
The agreed deployment schedule, mirrored within the Hoodi community configuration, is:
Hoodi’s gasoline restrict can even be raised to 200M on the activation epoch by way of the gasoline restrict schedule, matching Sepolia.
The mainnet activation time might be introduced as soon as determined by consumer groups. This announcement covers Hoodi; it doesn’t schedule a mainnet improve.
Shopper Releases
Hoodi-compatible consumer releases are listed under. The tables might be up to date as further releases change into accessible. Solely use a launch whose notes explicitly verify help for the scheduled Glamsterdam activation on Hoodi.
Consensus Layer Hoodi Releases
When working a validator, each the Consensus Layer Beacon Node and Validator Shopper should be up to date.
Execution Layer Hoodi Releases
Tooling
Further builder and validator tooling compatibility steering might be added as soon as confirmed for Hoodi. Operators utilizing exterior block-building infrastructure also needs to evaluate its Glamsterdam-specific improve directions.
FAQ
How do Ethereum community upgrades work?
Ethereum community upgrades require specific opt-in from node operators. Shopper builders coordinate the protocol adjustments, and validators and non-staking nodes replace their software program to help them.
A node that doesn’t help the brand new guidelines can not comply with the upgraded community after activation. Coordinating these updates is subsequently important for a profitable improve.
For a extra exhaustive overview of Ethereum’s governance course of, see this speak by Tim Beiko.
As an Ethereum mainnet person or ETH holder, is there something I have to do?
No. This announcement issues Hoodi. A separate announcement will cowl Glamsterdam’s activation on mainnet.
As a non-staking Hoodi node operator, what do I have to do?
Earlier than October 26, 2026 at 17:42:48 UTC, replace each your execution and consensus layer purchasers to releases that help the scheduled Hoodi activation. The consumer launch tables might be up to date as variations are confirmed.
As a Hoodi staker, what do I have to do?
Replace your execution and consensus layer purchasers earlier than activation. Be sure that each your beacon node and validator consumer are up to date. Assessment your consumer’s improve directions for the brand new ePBS duties, any adjustments required to builder or validator tooling, and the way to configure the gasoline restrict your validators goal after activation.
As a mainnet node operator or staker, what do I have to do?
No motion is required on mainnet because of this Hoodi announcement. The mainnet activation date and suitable consumer releases might be introduced individually.
As an software or tooling developer, what ought to I do?
Assessment the EIPs scheduled for Glamsterdam, check on Sepolia and Hoodi after activation, and verify whether or not adjustments to gasoline accounting, logs, opcodes, or consumer interfaces have an effect on your mission. Particularly, comply with the repricing influence information to determine contracts that rely on mounted gasoline assumptions and replace gasoline estimation the place wanted.
Why “Glamsterdam”?
Execution layer upgrades are named after Devcon or Devconnect host cities, and consensus layer upgrades use star names. Glamsterdam combines Gloas and Amsterdam, the placement of Devconnect in 2022.
