The Ethereum Foundation has unveiled its ambitious multi-year Lean Ethereum
roadmap, a comprehensive technical blueprint designed to dramatically enhance the network’s performance and future-proof it against the existential threat of quantum computing. This initiative, spearheaded by Ethereum Foundation researcher Justin Drake, was formally presented as a strawmap
– a draft strategic framework – at an internal workshop in January 2026.
The vision targets a massive leap in transaction throughput, aiming for roughly 10,000 transactions per second (TPS) on the Layer 1 mainnet, a significant increase from its current 15-30 TPS. But speed isn’t the only focus; the roadmap also meticulously plots the incremental introduction of post-quantum cryptography, ensuring Ethereum’s long-term resilience through seven distinct protocol upgrades stretching into the late 2020s.
The Lean Ethereum roadmap for performance and resilience
Introduced by Justin Drake on July 31, 2025, a day after Ethereum’s 10th anniversary, the Lean Ethereum
initiative signifies a fundamental re-architecture of the network’s core layers. This multi-year endeavour, spanning approximately four years, schedules seven protocol forks roughly every six months through 2029.
The aggressive timeline reflects a growing consensus within the Ethereum community that Layer 1 itself needs substantial performance improvements, rather than solely relying on Layer 2 solutions. Drake succinctly captured this ethos, stating, Ethereum is poised to become the bedrock of the internet of value, securing hundreds of trillions over decades, even centuries. Ethereum must survive anything… If the internet is up, Ethereum is up.
Boosting transaction speed and efficiency
A primary objective of the Lean Ethereum
roadmap is a dramatic scaling of transaction processing. The Layer 1 mainnet is slated to achieve 10,000 TPS and approximately 1 gigagas per second, while Layer 2 solutions are targeting an even more ambitious 1 million TPS and 1 teragas per second. These figures represent orders-of-magnitude improvements over the network’s current performance.
Critically, the roadmap also seeks to reduce transaction finality times significantly. The existing finality window, currently around 16 minutes, is projected to shrink to a swift six to 16 seconds. Ethereum co-founder Vitalik Buterin described these finality changes as a very invasive set of changes,
highlighting their profound impact on user experience and network responsiveness.
Ethereum’s current 12-second slot time is also set for incremental reductions, moving towards an ambitious two-second target. This will happen using a square-root-of-two reduction formula, transitioning through 8, 6, and 4 seconds before reaching the final two-second goal. Such continuous refinements are central to achieving the performance abundance
that Drake envisions for the network.
The architectural rebuild under Lean Ethereum
is structured around three core pillars: Lean Consensus (Beacon Chain 2.0), Lean Data (Blobs 2.0), and Lean Execution (EVM 2.0). Each pillar addresses a specific layer of the Ethereum protocol, aiming to streamline and harden its components. This modular approach allows for targeted improvements while maintaining overall system integrity and ensuring a smoother transition.
Hardening Ethereum against quantum threats
Beyond scalability, a top priority within the Lean Ethereum
roadmap is fortifying Layer 1 systems against the emerging threat of quantum computing. Current cryptographic methods, including Elliptic Curve Digital Signature Algorithm (ECDSA) for account signatures and BLS signatures for validator consensus, are known to be vulnerable to sufficiently powerful quantum computers.
Google Quantum AI research in March 2026 estimated that breaking 256-bit elliptic curve cryptography could require roughly 1,200 logical qubits, a notably lower estimate than prior projections.
The U.S. National Institute of Standards and Technology (NIST) anticipates deprecating ECDSA by 2030 and disallowing it by 2035, underscoring the urgency of this transition for the broader cryptographic landscape. Recognizing this, the Ethereum Foundation formed a dedicated Post-Quantum Security team in January 2026, with the Lean Ethereum
roadmap targeting full post-quantum protection for the network by 2029.
This quantum safety implementation will involve incremental introductions of post-quantum cryptography through successive hard forks, replacing current standards in stages. Hash-based cryptography, such as leanXMSS, is being actively explored for validators as a quantum-safe alternative to BLS signatures. Buterin envisions a future cleaner, simpler, quantum-resistant, prover-friendly, end-to-end formally-verified
consensus system, reflecting the meticulous approach being taken.
Upcoming milestones: Glamsterdam and Hegota
Tangible progress on this multi-year journey is expected soon, with two significant upgrades slated for the latter half of 2026. Glamsterdam
is the immediate near-term focus, designed to separate block agreement from processing. This separation will help Layer 1 scale by allowing validators to process more data efficiently.
Glamsterdam also natively integrates builders, enabling validators to safely outsource block assembly without needing to trust external software.
Following Glamsterdam
, the Hegota
upgrade is also confirmed for later in 2026, though its exact contents are still being finalized. EIP-8141, which introduces native account abstraction for quantum-safe signatures, is currently being considered for inclusion in Hegota.
Key details
These upgrades are supported by a suite of advanced technologies, including Zero-knowledge Ethereum Virtual Machine (zkEVM), Client-side proving, and Data Availability Sampling (DAS), all integral to the new architecture.
Justin Drake highlighted the successful integration of complex mathematical concepts. The moon math we need is now tamed: real-time zkVMs for lean execution; data availability sampling (DAS) for lean data,
he noted. This speaks to the maturity of these sophisticated cryptographic and scaling solutions, which are now ready for practical integration into the Ethereum protocol.
Efforts also include SNARK-friendly code for the EVM and hash-centric zkVMs, demonstrating a holistic approach to building a more efficient and verifiable chain.
Broader implications for the Ethereum ecosystem
The Lean Ethereum
roadmap represents more than just a technical plan; it’s a strategic declaration for the future of the entire decentralised ecosystem. Ethereum currently boasts substantial economic security, with $130 billion USD in value locked, representing 35.7 million ETH staked at roughly $3.7K USD per ETH.
Reinforcing this security through quantum resistance and dramatically enhancing its scalability will further solidify its position as a foundational layer for the internet of value. To understand how such foundational improvements might impact broader market dynamics, one might consider how the Ethereum Network Outlook Strengthens as AI-Driven DEX Reports Increased Activity.
The ambitious uptime goal of if the internet is up, Ethereum is up
underscores a deep commitment to reliability and censorship resistance. This level of resilience, combined with unprecedented transaction throughput, would allow Ethereum to support a vast array of applications and billions of users globally without compromise.
Key details
As Drake suggests, Lean Ethereum is as much an engineering aesthetic as a roadmap,
implying a pursuit of elegant and robust solutions in its ongoing evolution.
The focus on significantly faster Layer 1 performance also indicates an evolving understanding of scalability challenges. While Layer 2 rollups remain crucial, the commitment to enhancing the mainnet directly signals a belief that foundational improvements are paramount for long-term health and growth.
This living document, with quarterly updates expected, will undoubtedly shape the future trajectory of the second-largest cryptocurrency and its surrounding ecosystem for years to come. Such shifts in network capability are often reflected in price movements and investor sentiment.
For current market context, consider how Ethereum Navigates Key Support as Market Reacts to Institutional ETF Outflows.