Ethereum builders outlined a “Lean Ethereum” roadmap that aims to trim layer-1 complexity while hardening security, according to researcher Thomas Coratger on June 12 via X.
Co-founder Vitalik Buterin and researcher Justin Drake discussed the concept in a breakout session at the Forschungsingenieurtagung conference in Berlin. It proposes three guiding targets: security, simplicity, and optimality.
‘Lean Ethereum’
Coratger wrote that the roadmap calls for post-quantum-ready signatures and reworked data availability to guard the ledger against future cryptographic threats.
He added that simplicity would come from slimming consensus, execution, and data layers so new contributors can audit code without steep learning curves. Optimality aims to achieve lower latency and overhead, keeping Ethereum competitive while maintaining its decentralization.
Buterin illustrated the effort with four research tracks already under review. The first is a three-step-finality (3SF) protocol tha
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