Ethereum L2 network Optimism announced the opening of the fifth season airdrop application, distributing over 10 million OP tokens to 54,000 independent addresses. Users who interacted with at least 20 independent contracts on the superchain between March and September 2024 and had a contract-to-transaction ratio of 10% are eligible to receive the airdrop, with different airdrop multipliers based on their interaction history.