The logo of Bitcoin

Dogecoin is a digital currency, but what really is a digital currency?

A digital currency is a peer-to-peer, decentralized, digital currency whose implementation relies on the principles of cryptography to validate the transactions and generation of the currency itself. -Wikipedia

A digital currency is based around a public-private key pairing.  A keypair (or coin) is stored on the user's computer in a file called "wallet.dat" in a hidden directory.

Top Six Digital currenciesEdit

  1. Bitcoin
  2. Ripple
  3. Litecoin
  4. Auroracoin
  5. Peercoin
  6. Dogecoin

(The list will change rapidly/without warning - see Coinmarketcap )