[jojo_was_a_man]

But there are other crypto mechanism for that purpose... see - Verifiable Delay Functions

https://eprint.iacr.org/2018/601.pdf

[fogof]

VDFs are designed to take a long time to compute. To use them here, it would require someone to be computing the solution continuously between the time the prediction is made and the time it is revealed - that's too inefficient for this purpose.