Storage Proof API
Data Structure Indexer API
Historical Block Hash Accumulator
Timestamp-to-Block Number Mapper
Herodotus is composed of both on-chain and off-chain components. The key components are:
These contracts relay block hashes across Ethereum layers and verify storage proofs, among other tasks. Learn more
Cairo Programs: Proven off-chain.
We use off-chain Cairo for intensive tasks, like expanding our accumulators with many proven block headers.
Circuits: Proven off-chain.
We utilize circuits to efficiently verify state proofs from specific zk-rollups. Currently, we haven't implemented these in production, but they'll be available in the future.
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