1. A bunch of it happened "on the blockchain" 2. You can't entirely separate a thing from its effects, the effects of cryptocurrency have been to enable this

1. A bunch of it happened "on the blockchain" 2. You can't entirely separate a thing from its effects, the effects of cryptocurrency have been to enable this massive ecosystem of frauds and scams. That may not have been the initial intent, but it's certainly a large part of the outcome.