Ethereum is preparing a major shift in how blocks are validated on its core layer. Instead of re-executing every transaction, validators would verify zero-knowledge proofs — a change that could slash hardware requirements and scale with network growth. Ethereum Foundation member ladislaus.eth outlined the plan under the L1-zkEVM 2026 roadmap.
The scaling problem with re-execution
Currently, every Ethereum validator must re-run all transactions in each block to confirm validity. As on-chain activity grows, this approach puts increasing pressure on storage, bandwidth, and compute — especially for home stakers. ladislaus.eth said the current model scales poorly because more gas usage directly raises node costs.
How ZK proofs change validation
Under the proposed design, validators verify cryptographic proofs that a block's state transitions are correct, without repeating the actual computations. Critically, verification time stays constant regardless of block complexity. The change relies on zkEVM technology, which is now being integrated into Ethereum's core protocol. Notably, the new method is optional — it adds a verification path for attesters rather than replacing existing validation mechanisms entirely.
EIP-8025: Optional Execution Proofs
Central to the roadmap is EIP-8025, which introduces a new role called zkAttester. These validators confirm blocks by checking zero-knowledge proofs, eliminating the need to run a full execution client. The workflow: execution-layer clients produce execution witnesses, which feed into zkVMs that generate proofs of correct state transitions; consensus-layer clients then verify those proofs. Proofs from different execution clients propagate through a dedicated gossip network. zkAttesters accept a block once they have verified a threshold of proofs — currently proposed as three out of five. This design maintains client diversity while reducing the cost of validation to a constant level.
Timeline and dependencies
The Ethereum Foundation has scheduled the first L1-zkEVM workshop for February 11, 2026, at 15:00 UTC, covering six research tracks including prover infrastructure and security verification. However, the roadmap depends on enshrined proposer-builder separation (ePBS), targeted for the Glamsterdam hardfork, which extends proof generation windows and enables real-time proving within a single slot. Meanwhile, zkVM teams such as RISC Zero, ZisK, and openVM are already proving Ethereum blocks in test environments. EIP-8025 has been added to the consensus-specs features branch and awaits further review.
The proposal signals Ethereum's intent to decouple validation from execution, potentially lowering the barrier for home stakers and improving the network's long-term scalability.