The oldest meme coin among the three is, by far, Dogecoin.
Dogecoin (DOGE) was launched on December 6, 2013, by Billy Markus and Jackson Palmer, as a joke with the "Doge" meme (the famous Shiba Inu).
Shiba Inu (SHIB) emerged much later — in August 2020, created by an anonymous developer named "Ryoshi".
Meanwhile, MOCO is a brand new meme coin, launched on June 15, 2025, according to records from websites that track token launches on the Binance Smart Chain.
Summary in chronological order:
Meme Coin Release Date
Dogecoin December 2013
Shiba Inu August 2020
MOCO June 15, 2025
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