Dogecoin (DOGE) cryptocurrency was originally created as a joke, referring to the meme about the funny dog Shiba Inu, which has gained wide popularity on the Internet. DOGE initially took from Luckycoin a dynamic (random) size of the reward for each block, but in 2014, the size of the reward became fixed. Also, when it was created, it was claimed that the issue of DOGE would be limited to 100 billion coins, but this restriction was later removed. Dogecoin has a low cost, fast transfer rate with very small transaction fees, while remaining a cryptocurrency that people actually use, and not just hold as an investment. The coin is among the top most popular cryptocurrencies by capitalization and is traded on most exchanges, including an instant crypto exchange platform Changelly. You can buy DOGE for the most competitive exchange rate on Changelly.