In one embodiment, an instruction is received at a blockchain server from a first digital rights management (DRM) client, the instruction including an instruction to transfer a DRM license to an encrypted content item to a second DRM client. A block to be recorded in a blockchain, is created, the block including a content item ID of said encrypted content item, one of a device ID of a device including the second DRM client or a user ID of a user of the second DRM client, DRM license information for said DRM license, and a DRM decryption key for decrypting said encrypted content item. The block is recorded in the blockchain. A confirmation message is sent to the second DRM client confirming that the block was written to the blockchain. Related systems, methods, and apparatuses are also described.

There is provided a system for regulating access and managing distribution of content in a network, such as the Internet. The system includes communication gateways, installed at a subscriber site, internet control points, installed remotely, and various network elements installed throughout the network. The communication gateways and network elements operate in conjunction with the internet control points to restrict or allow access to specified Internet sites and to manage efficient distribution of content such as music, video, games, broadband data, real-time audio and voice applications, and software to subscribers.

A method for maintaining ownership integrity of templated executable graph-based models is provided. A node template that comprises a predetermined node structure and rules governing generation of node instances is obtained. A bounded executable run-time node is generated. The bounded executable run-time node comprises the node template, a node instance, and an overlay structure. The overlay structure comprises a run-time overlay and an ownership overlay. The run-time overlay comprises an overlay template and an overlay instance that includes processing logic for interaction with the node template and/or the node instance during execution. The overlay ownership overlay defines an ownership rule associated with the bounded executable run-time node. A stimulus and an associated context are received and, in response to the stimulus being received, execution of the processing logic of the run-time overlay is caused in accordance with the ownership rule of the ownership overlay.

An apparatus includes circuitry to: in response to a request for processing first information indicating an ownership of energy, determine whether a requester of the request has authority to process the first information and based on a determination indicating that the requester has authority to process the first information, generate second information for tracking enemy that instructs processing of the first information.

This document generally describes systems, methods, devices, and other techniques for using distributed ledgers, such as a blockchain database, to facilitate secure distribution and use of 3D model files to 3D printers over a computing network. A 3D printer controller may access an electronic ledger that identifies a plurality of 3D model files that have been made available for distribution. A particular 3D model file and a secret key may be obtained by the printer, where the 3D model file is encrypted based on the secret key. The secret key can be decrypted using a private key associated with the computing device that corresponds to the public key. After decrypting the secret key, the particular 3D model file can be decrypted using the secret key, and after decrypting the particular 3D model file, the particular 3D model file can be executed on the printer to print a physical 3D object.

Embodiments of the present application provide a data synchronization method and system. The method includes: assigning a first task for a data fragment in a target data set; starting a task thread of the first task to execute data synchronization of the corresponding data fragment between a source end and a destination end; determining if the first task corresponding to a data fragment fails in the offline data synchronization and if the first task supports a failover operation; in response to the first task corresponding to the data fragment failing in the data synchronization and the first task supporting the failover operation, clearing processing resources of the data fragment corresponding to the failed first task; and reassigning a second task for the data fragment corresponding to the failed first task, and starting a task thread of the reassigned second task to execute the data synchronization of the data fragment between the source end and the destination end.

Systems, methods, software, and apparatus are described for facilitating the distribution and management of fragmented content. In one embodiment, a packager packages content into fragments and generates a manifest including policies and metadata associated with the content. A downloader obtains the manifest, and uses it to obtain the content from one or more uploaders. For example, a downloader might forward a search request to one or more trackers, which, in turn, are operable to locate one or more uploaders that can meet the request, subject to any relevant policy limitations. The uploaders forward fragments to the downloader, subject to any relevant policy. The downloader assembles the content from the fragments. The operations and interactions of the entities can be subject to policy limitations associated with the fragments, the content as a whole, or the like.

Securely sharing content between a first system and a second system is provided. A hardware-based root of trust is established between the first system and a server. Content requested by a user and an encrypted license blob associated with the content is received by the first system from the server. A first agent on the first system connects with a second agent on the second system. The encrypted license blob and a sub-license request are sent from the first agent to a security processor on the first system. The first security processor decrypts the encrypted license blob, validates the sub-license request, and if allowed, creates a sub-license to allow the second system to play the content. The first security processor sends the sub-license to a security processor on the second system. The first system provides access to the content to the second system for future playback according to the sub-license.

The techniques discussed herein relate to providing a highly available and reliable secret distribution infrastructure. In an implementation, a key master service (KMS) system is disclosed. The KMS system includes one or more computer readable storage media having program instructions stored thereon which, when executed by one or more processing systems, direct the one or more processing systems to identify a hydration event and, responsive to the hydration event, determine if other KMS systems are running in a secret distribution infrastructure. The program instructions, when executed by one or more processing systems, further direct the KMS system to hydrate the KMS system with secret information obtained from the one or more of the other KMS systems when the other KMS systems are running in the secret distribution infrastructure.

An apparatus includes circuitry to: in response to a request for processing first information indicating an ownership of energy, determine whether a requester of the request has authority to process the first information; and based on a determination indicating that the requester has authority to process the first information, generate second information for tracking energy that instructs processing of the first information.