the official doc released on nov 2019 is not accessible anymore by this link: https://iabtechlab.com/wp-content/uploads/2019/11/U.S.-Privacy-String-v1.0-IAB-Tech-Lab.pdf
the official doc released on nov 2019 is not accessible anymore by this link:
https://iabtechlab.com/wp-content/uploads/2019/11/U.S.-Privacy-String-v1.0-IAB-Tech-Lab.pdf