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Proposer-builder separation | ethereum.org

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Learn how and why Ethereum validators will split their block building and block broadcasting responsibilities.

Page last update: June 24, 2026 r (opens in a new tab) p (opens in a new tab) n (opens in a new tab) + 5 See contributors Copy .md Copy .md Edit page (opens in a new tab) Present-day Ethereum validators create and broadcast blocks. They bundle together transactions that they have heard about through the gossip network and package them into a block that is sent out to peers on the Ethereum network. Proposer-builder separation (PBS) splits these tasks across multiple validators. Block builders become responsible for creating blocks and offering them to the block proposer in each slot. The block

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