Simply put, a blockchain is a system of recording information that is built in a way that is impossible to change, hack, or cheat the system. It is essentially a digital ledger of transactions that is duplicated and distributed across all the computer systems on the network.

This makes the blockchain impossible to corrupt, because if someone wanted to alter the ledger, they would have to change every block on the chain in every distributed version of it across the network. And the more blocks that are added to the chain, the more secure the system becomes.

When someone purchases an NFT, a record of the transaction is added to the blockchain conveying that persons’ ownership of the digital file. Because of the nature of the technology, this then can’t be altered, meaning the person who made the purchase will always have immutable proof of ownership over their NFT.

Most NFTs are hosted on the Ethereum blockchain either directly or through a ‘sidechain’ network such as Polygon. You can find out more about Polygon and Ethereum here.

Find out more about NFTs and how they work in our FAQs page here.