Do all these new digital currency schemes have the two important properties that inflation is prevented and that transfers are anonymous?<p>The first is realized by ensuring that the calculation for minting a coin requires the expenditure of some increasing threshold amount of energy to compute the next coin. It's just like the fact that producing a kilo of aluminum requires some ampere-hours of current through an electrolytic cell, except that the next kilo requires more.<p>The second is realized by the transfer protocol and the distributed ledger of blockchain.