← Glossary

Airdrop

General Updated Jan 2025

What is an Airdrop?

An airdrop is the distribution of free cryptocurrency tokens to a group of wallet addresses. Projects use airdrops to bootstrap adoption, reward early users, or decentralize governance.

How Airdrops Work

  1. Snapshot: The project takes a snapshot of eligible wallets at a specific block height.
  2. Claim: Eligible users claim tokens via the project’s website or app.
  3. Distribution: Tokens are sent directly to wallets or require manual claiming.

Common Types

TypeDescription
RetroactiveRewards past users (e.g., Uniswap’s UNI airdrop)
HolderDistributed to holders of a specific token
BountyRequire social tasks or referrals
TestnetReward early testnet participants

Notable Examples

  • Uniswap (UNI): 400 UNI per wallet to anyone who had used the protocol before Sep 2020.
  • Arbitrum (ARB): Distributed to early Arbitrum users and DAO voters.
  • Ethereum Name Service (ENS): Rewarding ENS domain holders and early adopters.

Tax Implications

In most jurisdictions, airdrops are considered taxable income at fair market value when received. Always consult a tax professional.

Tips to Qualify

  • Use protocols early and consistently
  • Participate in governance votes
  • Bridge funds across chains
  • Avoid Sybil farming (creating many wallets)