Base

Coinbase's Ethereum L2 blockchain.

Airdrops were predicted, but it was unclear whether they would actually happen.
On September 15, 2025, it was announced that they would.

Of course, it's unclear what makes someone eligible for airdrops.
So it's probably a good idea to do everything you can.
Not many people can do step ④, so step ④ might be the best.

① Register for the Base app whitelist: https://join.base.app/
② Buy Base Pay hats: https://www.base.org/pay
③ Try all DeFi apps on Base: https://www.base.org/ecosystem
④ Join as a Base community builder: https://www.base.org/resources