Abstract: A first non-fungible token (NFT) may be created that is associated with an asset associated with a first address. A system and/or one or more smart contracts of one or more other NFTs may implement a directory service associated with the first address. The directory service may receive requests at the first address and route the request directly or indirectly to a second address. The directory service may be configurable such that the second address may be changed. In this way, the asset referenced by the first NFT may be changed. This may add the capabilities of allowing selection between multiple versions of the asset, failure protection through redundancy via multiple copies of the asset, providing of self-executing web microservices, providing storage location flexibility, access control, and so on.

Abstract: A first smart contract references a second smart contract at a first address. A directory service, which may be implemented using one or more systems, smart contracts, non-fungible tokens, and so on, routes requests to execute the second smart contract from the first address to a second address where the second smart contract is stored. This enables the second smart contract to be moved, modified, replaced, and so on despite the reference to the first address in the first smart contract being fixed without requiring the first smart contract to be replaced.

Abstract: A non-fungible token (“NFT”) document platform includes a host platform that is operable to create and/or perform one or more transactions related to one or more NFTs on behalf of and/or for one or more other entities. Creation of the NFTs may involve creation of one or more smart contracts, storage of the smart contracts and/or the NFTs in one or more blockchains, and so on. The NFT document platform may also be operable to mint one or more documents, such as one or more birth certificates, contracts and other signed documents, titles, prescriptions, licenses and/or identification documents, checks, money, gift cards, and so on. The smart contracts and/or NFTs may correspond to the one or more minted documents. The NFTs may be usable to authenticate the minted documents, evidence ownership of the minted documents, control the ability to perform transactions regarding the minted documents, and so on.