Abstract
The term ‘non-fungible’ is used in economics to denote the possession of unique objects and to describe things that cannot be replaced by others because they have a set of unique properties. A ‘token’ as a unit of account is a record in a distributed blockchain that is controlled by a computer algorithm of a smart contract, in which the values of the balances on the accounts of token holders are recorded, making it possible to transfer them from one wallet to another.