A transaction relay layer is an intermediary network that facilitates the propagation of transactions across a blockchain ecosystem. This layer optimizes the delivery of unconfirmed transactions from users to miners or validators, often enhancing privacy, censorship resistance, or transaction inclusion speed. It operates separately from the main blockchain, providing a robust and efficient communication channel for transaction broadcasting. Such layers are crucial for improving network reliability and user experience.
Context
Transaction relay layers are becoming increasingly important for mitigating issues like transaction censorship and front-running in blockchain networks. Current research focuses on developing decentralized relay networks that offer stronger privacy guarantees and more equitable transaction ordering. Future advancements will likely involve integrating these layers more deeply into protocol designs, creating a more resilient and fair transaction processing environment for all participants.
Local reputation filtering at the transaction relay layer provides decentralized spam mitigation, decoupling network security from volatile fee markets.
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