06 Oct '12, 12pm

@jurbed ukazal platbu s #bitcoin na #studentsec2012 jeho dnesna prezentacia

Money functions Medium of exchange Storage of value (in time) Unit of account Token of status / reputation Metric or measure Tokens of exchange Metals Other commodities Have some value of their own Fiat currencies "Guaranteed" by state Value is defined by market (usability) Required for paying taxes Currency for debt recovery Commodities vs. fiat money You can not "create" new gold out of thin air Less flexible Some value is guaranteed Central banks usually do more harm than good in the long term Predictability Anonymity and regulations Peer to peer cryptocurrency Relies on strong crypto (ECC, hashes) No central point Rules are known, there is no way to change them now Features Very difficult to block Again: All rules are embedded in code No identity tracking Public key cryptography for signing transactions Transaction history to prevent double spending Computationally dif...

Full article: http://prezi.com/slrycv6yrfph/studentsec-platobne-systemy/

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@jurbed ukazal platbu s #bitcoin na #studentsec...

twitter.com 06 Oct '12, 12pm

When you tweet with a location, Twitter stores that location. You can switch location on/off before each Tweet and always ...