The long-awaited a certain protection protocol airdrop registration has finally started. The real-person verification step requires a payment of $3.3 to complete registration. This design is quite interesting—it can filter out bot accounts exploiting the system, and the project team can also earn some revenue through the verification process. It's a combination of anti-fraud measures and commercial monetization. For users participating in the airdrop, this cost is relatively small, but it indeed reflects a new approach that many projects are adopting to reduce customer acquisition costs. Quite interesting.