>Publish those documents wherever you want
And where would one publish such documents, so that they would not be under the control of any single party?
And where would one publish such documents, so that they would not be under the control of any single party?
If someone compromises my blockchain keys, it's about as bad as if someone compromises my website (in terms of the actual attack vectors).
And what if your use case requires you to prove to others that you (or your publisher) can't surreptitiously and arbitrarily alter the information you published?