Based on the popular "Doge" Internet meme and featuring a Shiba Inu on its logo, Dogecoin (DOGE) is a cryptocurrency that was forked from Litecoin in Dec 2013. Dogecoin has been used primarily as a tipping system on Reddit and Twitter to reward the creation or sharing of quality content. Dogecoin was created by Billy Markus from Portland, Oregon and Jackson Palmer from Sydney, Australia. Both had envisaged Dogecoin as a fun, light-hearted cryptocurrency that would have greater appeal beyond the core Bitcoin audience.
Dogecoin's implementation differs from Litecoin by several parameters. Dogecoin's block time is 1 minute as opposed to Litecoin's 2.5 minutes. Several cases of using employer or university computers to mine Dogecoin have been discovered.
Unlike deflationary cryptocurrencies which have a limit on the number of coins that can be produced, there is no limit to how many Dogecoins can be produced, which makes it an inflationary coin. Dogecoin was initially to have a limit of 100 billion coins, which would already have been far more coins than the top digital currencies were allowing. In February 2014, Dogecoin founder Jackson Palmer announced that that limit would be removed and there would be no cap, which should have the result of constant reduction of its inflation rate over a long time.