The magic lies in non-fungible tokens, or better known as NFTs. These are digital files that have a unique identity and a defined owner. However, the internet is very open and easy to replicate, so this translates into exclusivity.
NFTs use blockchain technology to certify their uniqueness and differentiate them from other digital files on the internet. Blockchain works similarly to a notepad kept in a safe. Transactions between individuals are recorded in this notebook, and its contents cannot be altered. Why? Because it can only be accessed and changed if all participants who write the document agree to do so.
This is how Bitcoin works, so both NFTs and cryptocurrencies share a common way of functioning and ensuring their authenticity: an entire decentralized community verifies transactions and approves any changes to the ledger. It's the same with NFTs.
The difference between NFTs and Bitcoins is that Bitcoin is limited and fungible, meaning one Bitcoin can be exchanged for another, and both have the same value and price. NFTs are unique but unlimited and non-fungible, meaning there is no more than one. Although NFTs can appreciate in value, they cannot be exchanged for another NFT.