Blockchain timestamping is just a way of proofing through a…

Blockchain timestamping is just a way of proofing through a hash, that some file/information/action/transaction existed at some point in time.
But if nobody, not even the creator kept the original file it may be have not been worth storing it after all.
That's the thing with "information": its is more like a graph/vector which connects raw-data to form patterns where you can extract "knowledge".
It is mainly about the raw data and the graph/information being of value to somebody.
If it isn't, nobody is storing it, if it is, a lot of people will store it and you will end up with a lot of redundancy.