Light client architecture refers to a design approach for blockchain clients that minimizes the amount of data and computational resources required for operation. These clients do not download the entire blockchain history; instead, they verify transactions and block headers using cryptographic proofs, such as Merkle roots. This design allows users to interact with a blockchain securely from resource-constrained devices. It provides a balance between security and accessibility.
Context
The continued refinement of light client architecture is crucial for improving user experience and accessibility in the broader blockchain ecosystem. Developments in zero-knowledge proofs and stateless clients aim to further reduce the data footprint and verification burden. These advancements are essential for mobile device adoption and for enabling faster, more efficient cross-chain communication, addressing scalability concerns.
SNACK is a new cryptographic primitive that enables superlight clients to trustlessly verify complex blockchain state queries from a single untrusted full node.
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