Dogecoin is a cryptocurrency that started as a joke and became the first meme coin. It uses the face of Kabosu, a Shiba Inu from the "doge" internet meme, as its logo and namesake. Software engineers Billy Markus and Jackson Palmer launched it on December 6, 2013, partly to poke fun at Bitcoin and the wave of new coins making grand promises at the time. They built it to be light and approachable and marketed it as a "fun and friendly Internet currency."
Under the hood, Dogecoin works much like the coins it parodied. It runs on a public blockchain secured by proof of work, the same mining model Bitcoin uses, where computers compete to confirm transactions and add them to the ledger. Markus based the design on two earlier coins, Luckycoin and Litecoin, both of which use the Scrypt hashing algorithm. That choice means Dogecoin is mined with Scrypt rather than the SHA-256 method behind Bitcoin, and for years it has been merge-mined alongside Litecoin, so miners can secure both at once.
One trait sets Dogecoin apart from Bitcoin in a concrete way: supply. Bitcoin caps out at 21 million coins, but Dogecoin has no fixed limit. A steady amount enters circulation each year, roughly 5 billion DOGE, which makes it inflationary by design rather than scarce. That steady issuance was meant to keep the coin cheap and easy to spend or tip with, rather than hoard.
What Dogecoin is for, in practice, is payments and tipping. Its low per-coin value and fast, cheap transfers made it popular for small online tips and donations, and the community built a reputation early on for charity drives and lighthearted fundraising. It does not carry the heavier technical ambitions of platforms built for smart contracts or decentralized apps; it is a straightforward payment coin with a large, durable online following.
Despite its joke origins, Dogecoin has outlasted many coins launched with far more serious pitches. It remains one of the better-known cryptocurrencies, kept alive by an active community and by the fact that it still does what it set out to do: move small amounts of value around the internet without much friction. Much of its staying power comes down to that community and the attention it draws, as much as to the underlying technology.