Abstract: According to a present invention embodiment, a system for granting access to applications associated with different blockchains comprises one or more memories and at least one processor coupled to the one or more memories. The system verifies a non-fungible token of a first blockchain is owned by a user. The non-fungible token is indicated by the user for access to an application associated with a second blockchain. Information for the second blockchain is retrieved from information for different blockchains associated with the non-fungible token. A blockchain address of the second blockchain is verified as being associated with the user based on the information for the second blockchain to grant access to the application. Embodiments of the present invention further include a method and computer program product for granting access to applications associated with different blockchains in substantially the same manner described above.

Abstract: According to a present invention embodiment, a system for controlling communications comprises one or more memories and at least one processor coupled to the one or more memories. The system receives a communication for an intended recipient. The communication includes a communication identifier for the intended recipient that serves as a destination for the communication. The communication is verified against a communication control policy of the intended recipient. The communication control policy includes at least one condition for attributes of a blockchain identity of one or more users to control communications from the one or more users to the intended recipient. Transference of the communication to the intended recipient is controlled in accordance with the communication control policy. Embodiments of the present invention further include a method and computer program product for controlling communications in substantially the same manner described above.

Abstract: According to a present invention embodiment, a system for controlling access to digital content comprises one or more memories and at least one processor coupled to the one or more memories. The system verifies a blockchain identity associated with a user. An access control policy indicates blockchain identities of one or more users for controlling access to the digital content of a different user. The user is verified against the access control policy, and the user is granted a variable level of access to the digital content of the different user in accordance with the access control policy. Embodiments of the present invention further include a method and computer program product for controlling access to digital content in substantially the same manner described above.

Abstract: According to a present invention embodiment, a system for granting access to applications associated with different blockchains comprises one or more memories and at least one processor coupled to the one or more memories. The system verifies a non-fungible token of a first blockchain is owned by a user. The non-fungible token is indicated by the user for access to an application associated with a second blockchain. Information for the second blockchain is retrieved from information for different blockchains associated with the non-fungible token. A blockchain address of the second blockchain is verified as being associated with the user based on the information for the second blockchain to grant access to the application. Embodiments of the present invention further include a method and computer program product for granting access to applications associated with different blockchains in substantially the same manner described above.