Based preconfirmations denote a mechanism in blockchain systems where a block proposer provides a provisional assurance that a transaction will be included in a future block. This preliminary confirmation is based on the proposer’s current view of the transaction pool and block construction strategy. It aims to offer users faster feedback on transaction finality before full network confirmation. The system operates by a designated block builder signaling their intent to include specific transactions.
Context
Based preconfirmations are a significant topic in scaling solutions for high-throughput blockchains, particularly in discussions around transaction ordering and censorship resistance. News reports often highlight this feature as a means to improve user experience in decentralized applications by reducing latency. A critical debate concerns the potential for malicious block proposers to renege on preconfirmations or to engage in front-running, which necessitates robust economic incentives and penalty mechanisms.
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