Source: Cointelegraph.com NewsOffchain Labs co-founder Ed Felten said there were one or two fraud challenges submitted on a version of Arbitrum running on the Ethereum proof-of-work fork after the Merge, which was defeated.Read MoreEd Felten, Offchain Labs, Arbitrum One, Fraud Proofs, Ethereum Merge, Fork, Bounded Liquidity Delay, Korean Blockchain Week