How do we enforce privacy while providing tracing of provenance using multiple channels in Hyperledger Fabric v1.0?

Question

In Hyperledger Fabric v0.6, a supply chain app can be implemented that allows tracing of provenance and avoids double-spending (i.e., distributing/selling items more than it has

Answer 1

Starting in v1.2,

Fabric offers the ability to create private data collections, which allow a defined subset of organizations on a channel the ability to endorse, commit, or query private data without having to create a separate channel.

Now in your case, you can create a subset of your reseller data to be private to the particular entity without creating a separate channel. More Info refer: Fabric Doc.