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cs.CR2021
Information Dispersal with Provable Retrievability for Rollups
Kamilla Nazirkhanova, Joachim Neu, David Tse
The ability to verifiably retrieve transaction or state data stored off-chain is crucial to blockchain scaling techniques such as rollups or sharding. We formalize the problem and…
cs.CR2021
Three Attacks on Proof-of-Stake Ethereum
Caspar Schwarz-Schilling, Joachim Neu, Barnabé Monnot +3
Recently, two attacks were presented against Proof-of-Stake (PoS) Ethereum: one where short-range reorganizations of the underlying consensus chain are used to increase individual…