Herodotus, a technology firm, has released an on-chain accumulator that uses storage proof cryptography, allowing users to verify data from any point of Ethereum’s blockchain without the need of a third-party. This solution makes use of StarkWare’s STARK proving, a zero-knowledge proof (ZK-proof) technology co-invented by mathematician Eli Ben-Sasson. StarkWare presented Herodotus with a custom built instance of its shared prover service SHARP, which enables advanced scaling efficiency using recursive proofs. The accumulator acts as a cache that stores block headers. If the accumulator has a header in its cache, the respective storage proof computation can use it for validation. If the header is not cached, then the prover has to generate a proof to cover the requested block range, add the block header to the accumulator and then complete the requested storage proof computation. This drastically reduces the time it takes to verify the Ethereum blockchain and associated data at any point in the network’s history.Herodotus chief technology officer Marcello Bardus notes that the technology removes the need to traverse the entire blockchain on the blockchain itself. Starkware notes that Storage Proofs could prove to be groundbreaking as an alternative to cross-chain bridges that need to rely on third-party oracles to track and verify data. Herodotus co-founder Kacper Koziol added that the accumulator is an innovation that Ethereum has long needed to align with blockchain principles of transparency and accessibility. The technology will essentially allow any user to access any point in Ethereum’s history. Potential use cases include account recovery, where the ability to verify on-chain data could be used to trigger a proverbial dead man’s switch, or to automate insurance protocols that use historical on-chain events to trigger smart contract payouts. This could enable the building of “Web2 equivalent applications” tapping into the pioneering ability to access and verify Ethereum blockchain data autonomously.

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Information	Details
Geography	Global
Countries
Sentiment	neutral
Relevance Score	9
People	Eli Ben-Sasson, Marcello Bardus, Kacper Koziol
Companies	Herodotus, Eli Ben-Sasson, SHARP, StarkWare, StarkNet
Currencies	Ethereum, Bitcoin
Securities	None