get https://{network}.g.alchemy.com/nft/v3//isAirdropNFT
isAirdropNFT - Determines whether a specific token is marked as an airdrop. Airdrops are defined as NFTs minted to a user address in a transaction sent by a different address.
NOTE
Please note that this endpoint is only available on Ethereum (mainnet only) & Polygon (mainnet, amoy & mumbai)