Create lots of copies. We know some papers/parchments can last 100s of years and are easy to store, so be sure to put some of your copies on paper. Anything cur

Create lots of copies. We know some papers/parchments can last 100s of years and are easy to store, so be sure to put some of your copies on paper. Anything current tech is just a guess as to what the future will bother to read and keep storing. (Metal plates, for example, would probably last but are a pain to move and store and are likely valuable melted down and reused) After that, try to get your copies into institutions you think will survive for hundreds of years. So far, at least from a US/Europe-centric view, that seems to be universities and some churches. Even that's no guarantee - the Vatican library has been sacked a couple of times and had its contents hauled off, so who knows what was lost in those moves. You might try to bet on public libraries, though their track record is shorter. Only partially joking: start a church that's dedicated to preservation of records. But really, I think the key is lots of copies, spread as widely as you can.