Up to here you weren't committing any crimes.

> but you'll also have to come up with a fake but auditable story of where it came from

And now you did.

Sorry, do you mean the comment was describing hypothetical crimes, or literally the comment itself was criminal?

Lying to government officials is a crime. Including saying you mined the crypto instead of getting paid for selling a vuln

Dubious; seems like if you know you're selling exploits to criminals you could be done on a conspiracy charge.