Blockchain investing is tricky. Fed gov is just starting to try to tax crypto much less police it.
My case was $600M case (not my personally haha) with institutional investors and SEC got involved. SEC filed suit in civil court. Class action lawyers went after auditor (Deloitte). SEC produced a document writing "ponzi-like" language fully knowing thats what investors and their CPAs need it.
If can't connect with other investors, then more learning alone rather than in group. On CPA, bigger firms with more CPAs usually have someone that has experienced it. Even if don't work with that CPA, they can get guidelines from colleague. My tax year claiming ponzi loss was done through a investment advisor company managing few $B assets with a tax department with probably 10+ people. This type of company has seen a lot that has occurred with investor's money and are well connected with estate lawyer and CPA firms. I had a very junior CPA that did my tax return, ponzi loss documentation is actually quite trivial but they were guided by the head of CPA dept who was very senior and seen Ponzi loss before.
So perhaps that offers you another consideration in case you are working with a larger investment firm. Small investment advisors don't have the scale but of course its very individual. They would be experts if they seen it once.
