There are going to be parts of any supply chain where the supply chain participant wants to keep all of their data, including traceability data, private. Black-Box Traceability allows private participants to particiate in the overall traceability picture.
Traceability is a series of inputs and outputs. At any location, products come into the location and product leave. What happens inside the location, or series of locations, can be kept private by implementing a simple set of standards and APIs with the Traceability Blockchain.