What Is the Difference Between Ethereum Glamsterdam and Previous Layer-2 Upgrades? — Protocol Architecture Evolution

What Is the Difference Between Ethereum Glamsterdam and Previous Layer-2 Upgrades?

The primary difference is that Glamsterdam scales Ethereum’s Layer-1 (L1) core directly through parallel execution and enshrined block-building, whereas previous Layer-2 (L2) upgrades focused on off-chain execution and data availability (blobs). Glamsterdam transforms the base layer into a high-throughput engine capable of 10,000 TPS, rather than just a settlement layer for rollups.

As of July 2026, the Ethereum network is transitioning from a "Rollup-Centric Roadmap" to an "Integrated Scaling Era." For years, the community relied on L2 solutions like Arbitrum, Optimism, and ZK-rollups to handle transaction volume. These upgrades, most notably the Dencun fork (2024) and the subsequent Fusaka refinements (2025), focused on making L2s cheaper by introducing "blobs." Glamsterdam, however, represents a paradigm shift. It introduces Block-Level Access Lists (BALs) and Enshrined Proposer-Builder Separation (ePBS), moving sophisticated scaling logic directly into the Ethereum protocol itself.

How Does Glamsterdam Architecture Differ from L2 Rollup Scaling?

Glamsterdam scales the Execution Layer (EL) of the mainnet by enabling parallel transaction processing, while L2 upgrades scaled the network by moving execution entirely off-chain. While L2s batch transactions and submit proofs to L1, Glamsterdam allows the L1 nodes themselves to process multiple non-conflicting transactions simultaneously.

In previous cycles, the L1 was often a bottleneck due to its sequential processing nature—transactions were handled one by one. L2s solved this by acting as external "highways." Glamsterdam upgrades the L1 "local road" into a multi-lane superhighway. By utilizing EIP-7928, the network now uses BALs to identify which transactions can be run in parallel. This reduces the "state contention" that previously limited Ethereum’s L1 gas limit. Consequently, the gas limit is projected to move from the long-standing 60 million toward a 200 million target, significantly narrowing the performance gap between the mainnet and high-speed L2s.

Key Technical Comparisons: L1 Glamsterdam vs. L2 Scaling

To understand the structural shift, we must examine the specific EIPs (Ethereum Improvement Proposals) that define Glamsterdam compared to the "Blob-era" upgrades that defined the 2024-2025 period.

Why Is Enshrined Proposer-Builder Separation (ePBS) a Game Changer?

ePBS (EIP-7732) moves the block-building process directly into the Ethereum protocol, eliminating the need for third-party MEV (Maximal Extractable Value) relays that L2s and previous L1 versions relied upon. This reduces centralization risks and MEV-related censorship by up to 70%, creating a more neutral and efficient block-production pipeline.

Before Glamsterdam, the separation of "proposers" (validators) and "builders" (specialized entities that order transactions) happened via external software like MEV-Boost. This created a "hidden" layer of infrastructure that was prone to centralizing forces. By enshrining this separation, Glamsterdam ensures that the benefits of efficient transaction ordering are distributed more fairly across the validator set. For traders on high-liquidity platforms like WEEX Futures Market, this translates to more predictable on-chain settlement and reduced "invisible taxes" caused by sandwich attacks and front-running at the protocol level.

The Impact on Gas Fees: L1 Repricing vs. L2 Batching

Glamsterdam introduces EIP-7904, a comprehensive gas repricing package that targets a 78.6% reduction in L1 transaction costs. Unlike L2 upgrades that only made it cheaper for rollups to post data, Glamsterdam makes it cheaper for users to interact with smart contracts directly on the Ethereum mainnet.

This is a critical distinction for DeFi protocols and RWA (Real World Asset) tokenization. In the 2024-2025 era, high L1 fees forced most retail activity to L2s, fragmenting liquidity. With Glamsterdam’s efficiency gains, the cost of complex operations—such as minting tokenized equities or executing multi-hop swaps—becomes viable on the base layer again. This "re-centralization" of liquidity back to L1 (or more efficient bridging between L1 and L2) strengthens the security of the entire ecosystem by ensuring the base layer remains accessible to more than just institutional whales.

How Does Glamsterdam Future-Proof Ethereum Compared to Older Upgrades?

Glamsterdam prepares the Ethereum state for high-throughput parallelization and future "statelessness" by reorganizing how the network manages its growing database. While previous upgrades were "reactive" to congestion, Glamsterdam is "proactive," building the foundation for the upcoming Hegotá upgrade and eventual single-slot finality.

The upgrade focuses on "Scale Blobs" and "Scale L1" objectives simultaneously. By introducing more efficient ways to handle data, Glamsterdam ensures that as L2s continue to grow, the L1 can keep pace with the verification demands. It essentially ends the era where L1 was a "slow" layer. For developers building on WEEX Spot infrastructure or integrating Web3 wallets, the Glamsterdam era means lower latency, higher reliability, and a significantly reduced risk of network-wide gas spikes during high-volatility events.

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