According to ChainCatcher news, research from the data analysis platform X-explore indicates that the anti-Sybil rules in this Arbitrum airdrop have created a "significant loophole," resulting in approximately 150,000 Sybil addresses and at least 4,000 Sybil communities profiting over 253 million tokens, accounting for 21.8% of the total airdrop amount.X-explore speculates that Arbitrum's rules are as follows: exclude cross-chain bridges, centralized exchanges, and smart contracts when detecting Sybils; apply relatively lenient detection for small-scale, same-person addresses; only use data prior to the snapshot (February 6, 2023) for Sybil detection; and only data from Arbitrum and Ethereum is used for Sybil detection, ignoring data from other Ethereum Layer 2s, such as Optimism and Polygon. These Sybil detection rules create significant loopholes, and based on the above rules, X-explore detected Sybil address data through an internal same-person address/Sybil address identification model. (source link)

ChainCatcher news, Arbitrum officially announced the issuance of its native Token ARB and revealed the Token economics. It is reported that the initial total supply of ARB is 10 billion tokens, with a maximum annual inflation rate of 2%. Among them, 11.62% is allocated to users, 1.13% is allocated to various DAOs in the Arbitrum ecosystem, 17.53% is allocated to Offchain Labs investors, 26.94% is allocated to Offchain Labs team members, future team members, and contributors, and 42.78% is allocated to the Arbitrum DAO treasury.To prevent bot abuse, this airdrop has established many anti-sybil rules and a points system, where 1 point corresponds to a specific number of airdrop tokens: 1. If the airdrop recipient's wallet transactions all occur within 48 hours, one point will be deducted; 2. If the airdrop recipient's wallet balance is below 0.005 ETH and the wallet has not interacted with multiple smart contracts, one point will be deducted; 3. If the airdrop recipient's wallet address was identified as a sybil attacker address during the previous Hop protocol bounty program, they will be disqualified.Currently, Arbitrum has released an airdrop query page that only supports users in checking their airdrop status, with the specific airdrop distribution date set for March 23. (source link)