
Dogecoin is a cryptocurrency created by software engineers Billy Markus and Jackson Palmer, who decided to create a payment system as a joke, making fun of the wild speculation in cryptocurrencies at the time.[3] It is considered both the first "meme coin", and more specifically the first "dog coin". ...
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... Markus designed Dogecoin's protocol based on existing cryptocurrencies Luckycoin and Litecoin,[15] ...

Dogecoin - Wikipedia
A hacker exploited a critical vulnerability in the Dogecoin network, causing 69% of its nodes to crash.
On Dec. 12, Andreas Kohl, co-founder of Bitcoin sidechain Sequentia, claimed that he had crashed 69% of the Dogecoin network. Kohl said he used an old laptop in El Salvador to execute it.
Data from Blockchair indicated that Dogecoin had 647 active nodes before the vulnerability was exploited. At the time of writing, Dogecoin had 315 active nodes.
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