#Crypto airdrops are a method used by blockchain projects to distribute free tokens or cryptocurrencies to a large number of wallet addresses. This strategy aims to promote the project, increase token circulation, and reward loyal community members. Airdrops are often announced in advance through social media, forums, or the project's website.

The process typically involves several steps:

1. **Eligibility Criteria**:

To participate, users might need to hold a specific cryptocurrency, be part of a certain blockchain, or complete specific tasks like joining social media channels, sharing posts, or referring friends.

2. **Snapshot**:

A snapshot of the blockchain is taken at a particular block height to record the holdings of all wallet addresses. This snapshot determines which addresses are eligible for the airdrop based on the predefined criteria.

3. **Distribution**: Once the snapshot is taken, the airdropped tokens are distributed to the eligible addresses. This distribution can occur immediately or over a set period, depending on the project's design.

4. **Claiming**:

In some cases, recipients need to claim their tokens manually through the project’s website or a smart contract. This is often done to ensure active participation and engagement with the project.

Airdrops help projects gain visibility, attract new users, and encourage existing holders to stay invested, fostering a vibrant and active community around the cryptocurrency.