I've seen this claim snowball over time as blockchain people desperately try to ad hominemate him. I do think he did once (quite a few years ago) consult for a

I've seen this claim snowball over time as blockchain people desperately try to ad hominemate him. I do think he did once (quite a few years ago) consult for a blockchain company. That's about the only factual basis I've discerned for it. (Disclaimer/source: I met Stephen once or twice a while back, via the Haskell community.)