Just as no one has seen the rise of bitcoin and other cryptocurrencies, no one can predict the impact of irreplaceable token (NFT) on the blockchain technology world. This new application to existing blockchains (such as Ethereum) provides a new way to provide real ownership of digital assets. Irreplaceable parts mean that they are not interchangeable. It's not like having a bitcoin. It's like having a unique and unique work of art. Visual art itself opened the prosperity of NFT. This application of tokens is easy to understand. A single token represents ownership of a single piece of art. It can then be traded or sold like any other token, with ownership of the art. However, visual art works and collections are only the beginning of what NFT provides. People have begun to implement them in a unique way. NFT can be tickets to concerts or other events. In fact, it can carry the full weight of any smart contract.