"The Open Podcast Prefix Project (OP3) is a free and open-source podcast prefix analytics service committed to open data and listener privacy."
Traditionally, a podcast prefix allows podcasters to collect podcast data in a third-party location. Often, these companies (like Podtrac) monetize this data or provide it to advertisers looking for podcasts to advertise on.
Sounds Profitable has a good explanation of how podcast prefixes work.
Transistor is proud to support John Spurlock's new Open Podcast Prefix Project. It's based on these principles:
Open-source podcast prefix analytics service committed to open data and listener privacy
Fully open and auditable infrastructure
Open API for logs (and eventually downloads)
You can enable it on your Transistor account by going to your "Settings" and scrolling down to "Advanced Settings:"
The idea, in the future, is that the Open Podcast Prefix would be able to publish open charts (similar to Podtrac's charts).
The more podcasters that participate, the more open data the project will be able to generate.