Abstract: Systems and methods are described for generating and storing immutable blockchain records with respect to authorized derivative works based on content associated with a non-fungible token (NFT). For example, a first NFT stored on a blockchain may be owned by a first blockchain address, and that owner may cryptographically sign a message indicating or representing that the individual approves of a created or to-be-created second NFT that is based at least in part on content of or associated with the first NFT. The cryptographic signature may be authenticated, and then a system may generate new data for storage in a new blockchain record. The new blockchain record may identify both the first NFT and the second NFT, and also include data proving that the owner of the first NFT approved of the second NFT.