What is Arbitrum? Arbitrum is an Ethereum layer 2 using Optimistic Rollup technology, which is built to achieve faster speed, lower costs and share the same security level as the main chain. Overview about its Retroactive reward distribution:Total Addresses: ~2,3 million addressesTotal eligible addresses: ~625k eligible addressesSnapshot day: Block number 22,207,817 on August 31,2022 (before Arbitrum Nitro’s upgrade) and block number 58,642,080 on February 6, 2023 post Nitro.Average rewards: ...