Definition ∞ A chain history proof is cryptographic evidence verifying the complete sequence of blocks and transactions within a blockchain up to a specific point. This proof confirms the integrity and immutability of past network states. It enables light clients to verify blockchain data without downloading the entire ledger.
Context ∞ Chain history proofs are essential for interoperability solutions and light client security, allowing for trustless verification across different chains. Developments in more efficient proof generation and verification are frequently covered in news regarding scaling solutions and cross-chain bridges.
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