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Power Badge
Verify if the user has a power badge, issued to users likely not to be spammers
Followed By
Check if the user is followed by certain accounts
FarRank by Airstack
Check if the user's Airstack FarRank is high enough.
Holds ERC-20
Check that the user holds a certain amount of ERC-20 tokens in their connected wallets.
Following
Check if the user follows certain accounts