币界网报道：July 2025 has seen a surge in notable crypto airdrops, offering users free tokens across various blockchain projects. Leading the pack is LayerZero's ZRO distribution, rewarding early adopters of its cross-chain interoperability protocol. Close behind is Starknet's STRK airdrop for ecosystem contributors, followed by zkSync's ZK token giveaway targeting active users. Other significant airdrops include Arbitrum's ARB distribution to DAO participants and Optimism's OP tokens for governance engagement. Experts advise caution, noting that while airdrops provide opportunities, recipients should research project fundamentals before claiming tokens. The current wave reflects growing efforts by layer-2 networks to decentralize governance and incentivize community participation.