The digital signatures you are thinking about are a mouse click from an i.p address. Ethereum is a whole other ball of wax which I'm not qualified to explain in detail but I do comprehend the difference. The Admiral would be the one to elaborate.
Printed copy · Anthology Volume 7, page 711Printed copy from The Tender For Law Anthology, Volume 7, page 711 (printed 13 June 2014). Added by this site; not part of the Facebook export.