Saying anything at all on a speculation platform, especially if others don't even know your identity (or you have no reason to believe they do), can only be treated as speculative intent, not intent to disclose classified information.
The Ukraine war has shown that cheap intelligence tricks can be used against the average recruit, like pretending to be a dating website and getting the GPS locations of horny enemy soldiers so your drones can drop grenades on them.
It doesn't need to be crypto wallet tracking. The amount of spyware being built into phone apps is where those agencies would be putting some effort into obtaining access to.
IIRC, the bet was on "Nicolas Maduro out?":
> If Nicolás Maduro leaves office before February 1, 2026, then the market resolves to Yes.
So the bet wasn't specifically "Nicolas Maduro kidnapped?" or even "Nicolas Maduro out by January 3rd?" And IIRC there was a lot of Trump saber rattling about Venezuela in the days before, hence the creation of the bet. I could absolutely see a plausible way to link these publicly-available pieces of information into a winning bet:
* Trump talking tough about Venezuela
* Spike in DC pizza activity on January 2nd