Abstract: A method of generating and validating a voucher to enable an end-user to obtain goods or services, comprising: (a) generating or acquiring contextual data that describes the goods or services and then encrypting that contextual data at a server or other device; (b) generating a time code corresponding to a span of time during which the voucher is valid and including or concatenating that time code with the contextual data; (c) signing the contextual data and time code cryptographically using either a symmetric or asymmetric secret key or keys to generate a signature; (d) providing the contextual data and time code and/or the signature on a voucher; (e) validating the voucher offline at a validating system, without having on-line access by means of comparing the signature in a process using a locally stored key shared with the server or other device that encrypted the contextual data.

Abstract: Platform for the delivery of content and services to networked connected computing devices, in which the platform stores content by arranging nodes in a hierarchical data format that is capable of semantically representing content, with each node including a unique ID. The hierarchical format acts as an abstraction layer that insulates a content or service creator and the connected computing devices from being restricted (i) to any specific, predefined data format for the content or (ii) to any specific, predefined transport media for exchanging data over the network.