{Several|A number of|Numerous} {reasons|factors} {have|have actually} been {alluded to|mentioned} {regarding|concerning|relating to|pertaining to} the sharp {rise|increase|surge} in the {price|cost|rate} of Bitcoin from Saturday September 3 when it {jumped|leapt} from {about|regarding|concerning} $574 to $610 by the {following|complying with|adhering to} day, {including|consisting of|suching as} {a push|a press} from speculators {expecting|anticipating} the {devaluation|decline|decrease} of the Chinese yuan.