A strong bull signal for cryptos is when you have a massive international payment behemoth like Visa experiencing chaos because of hardware failure within it's centralized "old world" system. BTC has been online since 2009 and, due to it's decentralized nature, if one node or even several fail the system will not shut down. This is a new world system. Each time the failings of the current financial services industry reveals itself to consumers it's another opportunity for cryptos to gain more traction.
RE: Credit And Bank Cards Stop Working, Sending Masses Into Frenzy