Twitter said in September that it would add a way for users to authenticate non-fungible tokens (NFT), and now the feature is live – if you pay for a $2.99 Twitter Blue subscription and are using an iOS device. On one hand, NFT profile pictures could be viewed as an incredible technology integration adding real utility for verified digital items. Alternately, it’s an unmissable signal pointing out the people that you should block or mute before they try to sell you some of their blockchain receipts. No matter what your opinion of easily reproduced digital trinkets is, Twitter is integrating them in a way that separates images that have been right-clicked for use as standard profile pictures and are connected to blockchain tokens by adding a special “soft hexagon” shape around them. At the launch, Twitter is supporting several crypto wallets that users can connect to their profiles and verify that their tokens are of the non-fungible variety. However, one side effect of limiting its interaction with the blockchain to a list of approved sources means that information on who owns what is not as decentralised as you may think.