world after the one thousand dollars he invested in bitcoin when he was only twelve made him a millionaire just before his eighteenth birthday. but they have recently been some sharp falls east and advises her clients she has a very simple long term strategy. if that whole yard rather placed my trust in mathematics cryptography and technology then any third parties are banks. not trying to knowledge me is a decentralized database a sort of register sums of money shares and contracts are recorded quickly cheaply and without intermediaries such as banks. entries cannot be changed. a number of blocks of digital information form a data chain this is the so-called block chain and it is totally secure. copies are