A light client protocol allows network participants to verify the state of a blockchain without downloading the entire transaction history. Instead, light clients rely on a small portion of data, such as block headers, and cryptographic proofs provided by full nodes. This method significantly reduces the storage and computational resources required for participation. It enables mobile devices and other resource-constrained systems to interact with a blockchain.
Context
Light client protocols are critical for enhancing the accessibility and scalability of blockchain networks, particularly for mobile users and decentralized applications. The ongoing discussion focuses on improving the security guarantees and efficiency of these protocols. Developments aim to minimize trust assumptions while maintaining swift verification capabilities.
Cryptographic aggregation of validator signatures via zk-proofs resolves the latency-scalability tradeoff, delivering instant finality to PoS consensus.
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