In addition, here's the data workflow design in the form of a swimlane diagram with the following conventions:

• Vendor lane represents the h4x web site
• Consumer lane represents the client side - the desktop/browser process
• ORKs lane represents the Tide decentralized network

This design is, obviously, not a line-by-line low-level-design, but a more abstract depiction of the data and process flow.
Annotation used are common cryptography annotation - but feel free to ask if there's any ambiguity.
No such thing as a stupid question.

Dataflow Diagram:


update: fixed diagram link