June 2026 monthly summary for ethereum/execution-specs: Focused on improving correctness and test coverage for EIP-7928 storage-change rules. Delivered a targeted test that ensures per-transaction no-op SSTORE is not recorded when a prior transaction in the same block has already written to the same storage slot, aligning with EIP-7928 expectations. This work reduces risk of incorrect storage-change accounting and supports reliable block-level storage behavior compliance.

January 2025: Focused on stabilizing test environments for external testnets across two Ethereum repositories (ethereum/execution-specs and ethereum/execution-spec-tests). Implemented test configuration fixes to align wallet balances and gas prices with EIPs 2537, 7002, 7251, and 7702, reducing test flakiness and enabling deterministic external testnet runs. This work improved CI reliability and expanded test coverage, supporting safer deployments.