A POSU, or Proof of Support Digital Collectible, is a type of non-fungible token (NFT) that represents the ideas and opinions of opinion leaders and influencers. They can be bought on the Polemix platform and traded on secondary marketplaces like Opensea.

POSUs offer various utilities, such as exclusive access to the leader through calls or conferences, exclusive access to communities, or the ability to enter raffles for unique prizes. There are two types of POSUs: GOLD, which is a unique and exclusive POSU for the most committed supporters; and BLUE, which is intended for the broader community.

Opinion leaders can use the Polemix platform to tokenize their ideas and opinions, whilst individuals can show their support by collecting POSUs.