Key facts
- Ethereum's Glamsterdam upgrade has been deployed on the Sepolia testnet.
- The upgrade aims to improve Ethereum's scalability and efficiency.
- Key changes include enshrined proposer-builder separation (ePBS) and block-level access lists (BALs).
- ePBS separates block proposers and builders, and consensus from execution validation.
- BALs record accessed accounts and storage locations, enabling parallel transaction processing.
- The upgrade establishes a 200 million gas limit floor.
Ethereum's Glamsterdam upgrade has been deployed on the Sepolia testnet, representing one of the final major rehearsals before its mainnet activation. The upgrade, scheduled to go live on Sepolia on Tuesday at 1:53 pm UTC at epoch 353,024, is designed to enhance the Ethereum network's scalability and efficiency.
Glamsterdam introduces significant changes to Ethereum's layer-1 scaling roadmap, including enshrined proposer-builder separation (ePBS) and block-level access lists (BALs). ePBS aims to separate block proposers from builders and consensus validation from execution validation, allowing validators more time to process execution payloads. This move from the current single-lane transaction processing to parallel processing is intended to increase transaction throughput and block sizes without altering the gas limit.