One of the unique benefits of NFTs is the ability to track every transaction on the blockchain. Every NFT has an owner, creator, and history, and this information or "provenance" is verifiable on-chain.
Each item page has an About tab where you can verify details about the contract used to create it.
Selecting this tab will show you important information about the NFT, such as:
The contract address of the collection
The token ID of this particular NFT
The blockchain the NFT is on