Layer 2 blockchain Optimism is distributing over 19.4 million OP tokens, equivalent to $27 million, to its users. The airdrop reached over 31,000 distinct addresses, with eligibility based on the delegation of OP holdings for governance voting participation. There's also a provision for the distribution of another 570 million OP tokens in future airdrops. Earlier this year, a second airdrop by Optimism led to an 11% decline in OP's price due to the surge in its circulating supply.