TechFlow — Ethereum Foundation announced the official release of the Ethereum Execution Layer Specification (EELS), following over a year of development.
EELS is a Python reference implementation of the core components of Ethereum execution clients, focusing on readability and clarity. It aims to serve as the spiritual successor to the Yellow Paper, being more programmer-friendly and staying synchronized with post-merge forks.
EELS can populate and execute state tests, follow the mainnet, and serves as an excellent framework for prototyping new EIPs.
EELS provides a complete snapshot of the protocol at each fork—including upcoming ones—making it easier to follow than EIPs (which only propose changes) or production clients (which often mix multiple forks within the same code path).
