The portability of NFTs is ensured through the use of blockchain technology. Each NFT is a unique, indivisible token with its own digital signature and metadata that is stored on a blockchain ledger. This means that ownership of the NFT can be transferred to another person with ease and without the need for any intermediaries. Therefore, NFTs can be easily and quickly moved between different platforms and marketplaces, making them highly portable. The use of blockchain technology ensures that ownership and authenticity of NFTs are secure and transparent at all times, providing buyers with a high level of confidence in the value and authenticity of their purchase.