Coinbase, the U.S.-based cryptocurrency exchange that went public this week with a direct listing of its shares on Nasdaq, is missing out on the latest frenzy whipping up gasps and chortles in digital asset markets: a ferocious rally in dogecoin (DOGE) that has pushed returns on the doggy-faced meme token to more than 6,000% for the year to date. And it’s not just the price inducing the saliva.