Block Proposer Control refers to the authority a specific network participant has to select and order transactions within a new block on a blockchain. In proof-of-stake systems, a block proposer is chosen to assemble transactions into a block and propose it to the network for validation. This role carries significant influence over transaction inclusion, ordering, and censorship resistance, directly affecting network fairness and efficiency. The method of selecting a proposer is a fundamental aspect of a blockchain’s consensus mechanism, impacting its decentralization properties.
Context
The discussion around Block Proposer Control often centers on its implications for transaction ordering and the potential for Miner Extractable Value (MEV) or Proposer Extractable Value (PEV). A key debate involves designing mechanisms that distribute this control fairly to prevent centralization and undue influence over block contents. Future developments include proposals like proposer-builder separation (PBS) which aims to separate the act of building a block from proposing it, thereby reducing the power of individual proposers and promoting more equitable transaction processing.
FairDAG introduces a two-layer DAG-based consensus to decouple block proposal from final ordering, fundamentally constraining adversarial MEV manipulation while boosting throughput.
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