Researchers at a16z Crypto have identified a fundamental trade-off between blockchain censorship resistance and low latency. They assert that any Byzantine fault-tolerant (BFT) blockchain protocol with censorship resistance requires at least five communication rounds when more than 20% of validators could be malicious, compared to the three rounds needed by traditional BFT consensus.
To mitigate transaction censorship by block proposers, initiatives like Ethereum's FOCIL/EIP-7805 and Solana's Constellation and MCP projects have been developed. These projects enhance censorship resistance by enabling validators to pre-collect 'inclusion lists' of transactions, ensuring their inclusion in a block within a maximum of five communication rounds.
a16z Crypto Explores Blockchain Censorship Resistance vs. Low Latency
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