A derogatory word for someone who is not technical, yet wants to talk to you about "blockchain" and related technologies ad nauseam, usually as a tactic to sound smart and relevant.
Blocktards seem to think that blockchain technology has a role in every facet of humanity, and will often cite that they know people that are working on a new cryptocurrency that is a "game changer".
A person who spends all of his free timetrolling, scamming, and producing smear campaigns on social networks against groups and individuals or Cyber Cancer.