It's true that only paying companies (associate membership or higher) can participate in working groups and contribute to the specifications, but once a specifi

It's true that only paying companies (associate membership or higher) can participate in working groups and contribute to the specifications, but once a specifications has been adopted it becomes public. All of the adopted core specifications, profile specifications, and errata documents are public: https://www.bluetooth.com/specifications/ https://www.bluetooth.com/specifications/