Block data availability refers to the assurance that all transaction data within a blockchain block is accessible to all network participants. This property is fundamental for verifying the validity of blocks and preventing malicious actors from concealing fraudulent transactions. It ensures that any node can reconstruct the ledger’s state and detect invalid block proposals.
Context
Ensuring block data availability is a central technical discussion in the development of scaling solutions, particularly for rollups and sharding architectures. A key challenge involves distributing data efficiently across a large network without overburdening individual nodes. Innovations in data availability sampling and erasure coding are actively being pursued to maintain this crucial property while significantly increasing blockchain throughput.
A new k-dimensional polynomial commitment scheme drastically reduces data availability overhead, unlocking massive throughput for decentralized rollups.
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