Crypto Art or NFT

CryptoArt are rare digital artworks, sometimes described as digital trading cards or "rares", associated with unique and provably rare tokens that exist on the blockchain 

The concept is based on the idea of digital scarcity, which allows you to buy, sell, and trade digital goods as if they were physical goods
CryptoArtists may be classified in two main categories: tech-savvy artists and self-trained artists.

In crypto art, there is an implicit contract that what you’re buying is unique. The artist makes only one of these tokens, and the one right you get when you buy crypto art is to say that you own that work. No one else can. Note, though, that this is not a legal right, nor is there any enforcement other than social mores.
Nonetheless, the value comes from the artist creating scarcity.

Its bought by bidding process. The winning bidder is now named in a digital record that confers ownership. This record, called a nonfungible token, or NFT, is stored in a shared global database. This database is decentralized using blockchain, so that no single individual or company controls the database. As long as the specific blockchain survives in the world, anyone can read or access it, and no one can change it.