Interesting topic. Note that even the blockchain example is not trustless, it’s just distributed trust. This is all about “difficult to arrange this amount of evidence without the claim being true”.
I haven’t worked it through, but my intuition is that there’s a symmetry which can be exploited. Proof of posteriority of a state of the universe IS proof of priority of an earlier state. And vice versa.
Interesting topic. Note that even the blockchain example is not trustless, it’s just distributed trust. This is all about “difficult to arrange this amount of evidence without the claim being true”.
I haven’t worked it through, but my intuition is that there’s a symmetry which can be exploited. Proof of posteriority of a state of the universe IS proof of priority of an earlier state. And vice versa.