Dogecoin is a meme cryptocurrency with the internet-famous Shiba Inu canine breed as a mascot. The project was introduced on Twitter by Jackson Palmer on November 27, 2013 when he tweeted about "investing" on “Dogecoin”, a made-up name. Some of Palmer's friends encouraged him to create a real Dogecoin project, so he registered dogecoin.com and started working. Billy Markus saw the website and reached out to Palmer. Markus and Palmer thought Dogecoin would make the cryptocurrency space more palletable to newcomers since, as they built the protocol, Bitcoin was beleaguered by associations with Silk Road and dark web. Palmer exited the Dogecoin project and community in June 2014 by tweeting, "Unsubshibing. Peace."
Unlike a variety of other altcoins launched in 2013 and 2014, Dogecoin has proved itself surprisingly resilient to crypto-asset market cycles, which is speculated to be the result of meme durability.
Dogecoin is a fairly-launched coin based on the structure of an existing project, Luckycoin, which itself is a code base fork of Litecoin, and arguably enjoys one of the most decentralized peer-to-peer networks after Palmer left the project. New blocks are added to the chain every 60 seconds, on average.
Dogecoin uses scrypt hash function for its proof-of-work consensus mechanism. The scrypt algorithm was specifically designed to make it costly to perform large-scale, custom-hardware attacks. At launch, Dogecoin was mine-able on personal computers, which was attractive to cryptocurrency enthusiasts during a time when Bitcoin mining was increasingly industrialized and capital intensive.
Dogecoin has no formal white paper, although several fans have written blog and forum posts as stand-in explainer documents.