Ethereum Layer 2 Throughput Surges from 200 TPS to 4,800 TPS in One Year
Ethereum Layer 2 scaling solutions have undergone a remarkable transformation over the past year. In April 2025, the aggregate throughput of Ethereum L2s stood at a modest 200 transactions per second (TPS), a figure that many considered insufficient for mass adoption and DeFi expansion. Fast forward to April 2026, and that number has skyrocketed to 4,800 TPS. This 24-fold increase is not merely a technical milestone but a pivotal development reshaping the economics and user experience of Ethereum-based decentralized applications.
Several factors contributed to this throughput explosion. First and foremost was the deployment of the Glamsterdam hard fork in the first half of 2026, which enshrined enshrined Proposer-Builder Separation (ePBS) into the Ethereum protocol. This upgrade optimized block production and sequencing, reducing latency and enhancing transaction ordering efficiency on L2s. Additionally, significant improvements in zk-rollup technologies, including zero-knowledge proof generation speeds and compression algorithms, have enabled L2s to batch and finalize a vastly increased number of transactions with minimal gas overhead.
Beyond pure technology, ecosystem maturation played a role. Layer 2 networks benefited from increased developer tooling, better cross-chain interoperability, and more attractive incentives for validators and sequencers, driving network security and throughput. The result is a Layer 2 environment that can handle nearly 5,000 TPS — a throughput level that positions Ethereum L2s competitively alongside high-performance blockchains while maintaining Ethereum’s security guarantees.
The Glamsterdam Hard Fork and Enshrined Proposer-Builder Separation (ePBS)
The Glamsterdam hard fork, launched in early 2026, represents a fundamental shift in Ethereum’s consensus and transaction inclusion mechanics. Central to the fork was the implementation of enshrined Proposer-Builder Separation (ePBS), a protocol-level change designed to disentangle the roles of block proposers and block builders within the network.
Traditionally, block proposers (validators) and builders have often been intertwined, leading to concerns about Miner Extractable Value (MEV) extraction, censorship, and centralization. ePBS formalizes separate roles, allowing specialized builders to construct blocks optimized for efficiency and MEV extraction, while proposers focus on finalizing and validating these blocks without undue influence.
This separation has several implications. For validators, it reduces the complexity and resource demands of block building, enabling them to participate more securely and with lower overhead. For the network, it mitigates some forms of MEV-related front-running and sandwich attacks by introducing transparent, fair ordering protocols. Moreover, ePBS has enhanced Layer 2 throughput by streamlining block production processes, reducing block times, and increasing transaction finality speeds.
The Glamsterdam hard fork thus not only boosts performance but also addresses long-standing governance and fairness challenges within Ethereum’s consensus layer, reinforcing trust in the network’s integrity as usage scales.
KelpDAO Bridge Hack Sparks $13 Billion DeFi TVL Collapse
On April 20, 2026, the Ethereum ecosystem was rocked by a massive security breach: the KelpDAO bridge hack. Attackers drained $292 million from the cross-chain bridge, triggering a cascading collapse in decentralized finance (DeFi) total value locked (TVL) that plummeted from its October 2025 peak of $171.9 billion to approximately $130-140 billion.
This incident starkly highlighted the ongoing vulnerabilities inherent in cross-chain bridges, which remain a critical yet perilous component of Ethereum’s Layer 2 and multi-chain infrastructure. Despite advances in cryptographic proofs and security audits, bridges continue to be prime targets for sophisticated attackers, with KelpDAO’s $292 million loss ranking among the largest bridge exploits in crypto history.
The $13 billion TVL collapse post-hack reflects investor flight to safety and renewed skepticism toward bridge security. It also underscored the systemic risk bridges pose not only to individual projects but to the broader DeFi ecosystem. In response, there is growing momentum behind protocols emphasizing trust-minimized or fully trustless bridging solutions and Layer 2-native interoperability that reduces reliance on bridges altogether.
Base, Arbitrum, Optimism, and zkSync: The Layer 2 Leaders of 2026
The Layer 2 landscape in 2026 remains dynamic, with a handful of protocols emerging as clear leaders in adoption, throughput, and developer activity. Among these, Base, Arbitrum, Optimism, and zkSync stand out.
Base, backed by Coinbase, has leveraged strong institutional partnerships and user-friendly onboarding to attract significant liquidity and developer interest. Its integration with Coinbase’s ecosystem provides a seamless fiat-to-crypto gateway, fueling growth.
Arbitrum continues to dominate in terms of TVL and developer engagement, benefiting from its optimistic rollup technology and robust tooling. It remains the go-to platform for many DeFi protocols seeking scalability without compromising security.
Optimism has carved out a niche with its focus on modularity and governance, pioneering decentralized control of L2 parameters alongside its optimistic rollup architecture. Its recent upgrades have improved throughput and reduced fees.
zkSync, a pioneer in zero-knowledge rollups, has made strides with its zkEVM compatibility and rapid proof generation, aligning with Ethereum’s vision of trustless scalability. Its technology underpins many privacy-conscious and high-frequency applications.
Together, these four L2s capture a substantial share of Ethereum’s scaling narrative, each balancing throughput, security, and user experience in distinct ways. Their collective throughput contributes to the 4,800 TPS milestone, with ongoing competition driving innovation.
Ethereum Price at $2,305 Amid L2 Success and Market Headwinds
Ethereum’s market price stands at $2,305 as of April 21, 2026, having retreated from a peak near $5,000 in August 2025. This 54% decline reflects multiple converging pressures despite Layer 2’s technical triumphs.
Foremost among these challenges was the KelpDAO hack, which eroded investor confidence in Ethereum’s DeFi ecosystem, leading to significant capital outflows and TVL contraction. Additionally, macroeconomic factors and the broader crypto market correction following the historic Bybit hack in February 2025 — when $1.5 billion was stolen by North Korean actors — have suppressed speculative demand.
Nonetheless, Ethereum’s Layer 2 scaling success provides a strong foundation for long-term value. The throughput explosion and Glamsterdam upgrade enhance Ethereum’s utility and developer appeal, supporting network effects that could underpin future price appreciation. Yet, the disconnect between technological progress and price performance highlights ongoing risks, including security concerns and competition from rival chains like Solana, which recently surpassed Ethereum in monthly volume ($650 billion in February 2026).
Vitalik Buterin’s ETH Sales in Early 2026 and Market Reaction
In early 2026, Ethereum co-founder Vitalik Buterin made headlines by selling portions of his ETH holdings. While the exact amounts were modest relative to market capitalization, the timing and optics of these sales triggered notable market reactions.
Many investors interpreted Buterin’s sales amidst a period of price weakness and recent security incidents as a bearish signal, contributing to short-term downward pressure on ETH price. However, analysts caution against overinterpreting the move, emphasizing that early ETH holders routinely diversify portfolios or fund philanthropic initiatives.
Importantly, Buterin remains actively