Creating own NFT token using erc721 standard and solidity programming language

Blockchain as a technology in recent years is increasingly mentioned as a technology that will dominate in the future, through various industries. The paper analyzes in which industries blockchain can be an advantage and how it can improve and make the user experience better and more secure. Blockchain also carries with it potential "threats" related to the way data is stored, so the most common possible ways of damaging the blockchain are analyzed. In the practical part of the paper, the article describes how the reader can independently make an NFT token based on the ERC721 standard Ethereum blockchain and how to set it on the blockchain and distribute, and potentially one can make money on it, which is another case of using the blockchain.