[mercer]

I dunno. To someone like me who is all up into Bitcoin but not too serious about it, it sounds okay. Faddish, but okay.

I think the crucial distinction is whether you're pointing at an approach versus some specific implementation. 'Blockchain', as I understand it, is a particular approach that isn't linked to some particular instance.

"Your company on website" doesn't work because there's really only one 'web'. "Your company on Facebook" does work, as does "Your company on SCRUM/NoSQL/AOL/Mobile/etc."

I'd prefer "on a blockchain", personally, but "on blockchain" doesn't strike me as too egregious.