Hooray. But as I always believed - there never was a printed report - there was only the GIA's digital report - which was launched in 2012 and never seemed to take off!
Available for natural, D-to-Z color diamonds, the GIA eReport delivers grading results completely online and includes an image of the diamond captured during the grading process.
www.gia.edu
So in about 2018 (I think) they launched a block chain version
Chow Tai Fook and GIA are discontinuing its pilot service, the GIA blockchain diamond grading report, on October 31, 2022. Clients with this report registered to receive it through the Chow Tai Fook T Mark App. Rest assured, this discontinuation will not affect the security of your report.
www.gia.edu
I believe this may be part of an attempt to link from mine to retailer the history of the diamond (but I do not have enough time to research this!)