Searcher Proposer Separation is an architectural design pattern in blockchain transaction ordering, particularly relevant to Proof of Stake systems, that divides the roles of identifying profitable transaction bundles and including them in a block. “Searchers” identify and construct these bundles, often involving arbitrage or liquidations, while “proposers” are responsible for building and submitting the block to the network. This separation aims to mitigate maximal extractable value issues. It segments transaction optimization from block creation.
Context
In the evolving discussion around blockchain efficiency and fairness, searcher proposer separation is a significant topic in cryptocurrency news, especially concerning Ethereum’s post-merge architecture. It addresses the potential for proposers to front-run or censor transactions, impacting market integrity. Ongoing developments in this area aim to create a more equitable and transparent transaction ordering process, influencing the security and decentralization of major networks and reducing information asymmetry.
Foundational impossibility theorem on transaction fee mechanisms is circumvented by SAKA, a new design securing 50% welfare and full incentive compatibility.
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