Will your diplomas be valid all over the world in the future?
Every country has it's own standart of education and they are different. Usualy a lot of depends from the University, and every University made the teachers.
The main thing is that employers could have confirmation of these diplomas. So that people can get a job using this technology.
Perhaps at the very beginning there may be difficulties. This will be as long as the transition to a new education system is carried out. Once the whole system is working in a new way, everything will be fine. These will be the same diplomas, only not paper, but electronic, with electronic seals and signatures. I do not see any reason to consider them invalid.