Airdrop usually refers to obtaining airdrop rewards from the project party or token issuer by participating in the project's community activities, completing tasks, or holding specific tokens. This involves some underlying logic. The following is the underlying logic of general airdrops:

1. Token distribution: The project party or token issuer distributes a certain number of tokens to qualified participants at a specific block height or time point.

2. Participation conditions: The conditions for participation in airdrops are usually holding specific tokens or being active in the project community and completing some tasks, such as sharing project content, promoting activities, etc.

3. Verify identity: In order to ensure the fairness of the airdrop and prevent abuse, it is usually necessary to verify the identity of participants, which may require providing wallet addresses or other identity information.

4. Smart contracts: Airdrops are usually executed by smart contracts, which check whether participants meet the participation conditions and automatically send token rewards to the participant's wallet address when the conditions are met.

5. Blockchain transactions: The distribution and transfer of tokens are realized through the blockchain network, ensuring the transparency and non-tamperability of transactions.

It should be noted that the airdrop logic of different projects may be different, so before participating in the airdrop, it is recommended to understand the rules and requirements announced by the project team in detail. At the same time, you should also be cautious about any airdrop activities that seem unreasonable or too risky to prevent potential scams or risks.