As an amateur treasure hunter in the US, briefly, I can easily pass on this because the legal implications are shockingly odious. Some of us do it more for the “love of the game” and the resurrection of historical stories that are interesting. My personal best inquiry was for the Texan outlaw Sam Bass. Dead ended on private property, but pretty sure I know where the missing Union Pacific train robbery gold is buried…
You better unload yourself before the burden leads to something regretful. DM me your theory and I’ll help you cope. I’ll need precise details. Trust no one else.