The airdrop specifically rewarded users interacting with Superchain, an ecosystem of blockchains developed with the OP Stack.

Activity on chains including OP Mainnet, Base, Zora, Mode, Metal, Fraxtal, Cyber, Mint, Swan, Redstone, Lisk, Derive, BOB, Xterio, Polynomial, Race, and Orderly was considered.

Airdrops are available to wallets that interacted with at least 20 contracts on the Superchain between March 15 and Sept. 15, 2024. Users have until Feb. 13, 2025, to claim the tokens.

“Airdrop #5 rewards power users who have contributed to the growth of the Superchain Ecosystem,” Optimism wrote.

There were also bonus eligibility requirements that boosted individual user allocations, such as delegating a minimum amount of OP or engaging with seven chains on the Superchain.

Through five airdrops, Optimism has so far distributed over 265 million OP tokens. Around 550 million OP tokens remain for future distributions.

Optimism's first airdrop occurred on May 31, 2022, followed by a second on Feb. 8, 2023, and a third on Sept. 13, 2023. The third airdrop gave out 19.4 million OP worth $26 million at the time to nearly 32,000 addresses that engaged in the delegation activities of the Optimism Collective. This was followed by a fourth airdrop in February 2020.

According to The Block's price page, the OP token changed hands at $1.55 at the time of writing after seeing a 5% drop in the past 24 hours. OP has a circulating supply of 1.3 billion tokens and a market cap of $1.9 billion.

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