X, which started to stop supporting NFT profile pictures, also removed all explanations on the subject from the X Premium support page.

The NFT profile picture feature first started in 2002 under the name Twitter. Thanks to this feature, Twitter enabled users to link their crypto wallets to their Twitter profile photos. Twitter Blue members, who took advantage of the NFT profile pictures feature on Twitter, had hexagonal avatars. For now, the use of hexagonal avatars continues, but it is unknown for how long it will continue.