http://invest7xci3j4tfs37zeyxylwmhfnl2nvfbf6geos4xxeh3ejmzntfid.onion/ethereum-complexity/index19.html
How Bitcoin is Different Until Bitcoin, all electronic money and digital transactions had to be managed by some authority, be it a bank, company, or government. Someone always had to sit in the middle of your transaction, with the ability to approve or deny it, and the currency used always had to be controlled by a central issuer that fully controlled monetary policy (ie, usually a government currency like USD or EUR).