Let's not forget that even that is prone to problems. I had some archives (30-35 years old) that no longer can be unpacked. The application that made them is no

Let's not forget that even that is prone to problems. I had some archives (30-35 years old) that no longer can be unpacked. The application that made them is no longer working. Source code isn't available. I also had a few "rotting" CDs (not CD-R, but factory pressed CDs). You need a very good strategy to make digital information survive the next 100 years, and keep it up to date, at least yearly. And, given the performance of government IT projects in the past in so many countries, this will probably turn out to be more expensive than they hope.