I researched your claim as best I could, and I did not find any evidence that the Craig Wright case hinged in any way on the on-chain events. The UK high court appears to have accepted other forensic evidence that he fraudulently produced documentation.

However, there are many cases that DO use blockchain events. Transferring the blockchain event into court admissible evidence is not at all straightforward, but some jurisdictions have established standards for how to do it. This comes up especially often in inheritance cases.

See: https://truescreen.io/articles/blockchain-evidence-court-adm...

It has been an interesting rabbit hole. Notably, on-chain evidence is only one of many different kinds of evidence that courts will accept, so focusing entirely on this mechanism to the exclusion of all others is not so helpful. Transferring on-chain events into a winnable court case can be a fairly expensive way to establish facts.