SAN FRANCISCO — Joe Buttram, a former mixed martial arts fighter and start-up security guard turned cryptocurrency investor, was looking at a new toy called a CryptoKitty.
“You can see he wants to sire,” Mr. Buttram, 27, said.
For about 20 of the cryptocurrency called ether ($14,000 at the time), the cartoon cat would “mate” with one of Mr. Buttram’s, and he would get a new CryptoKitty. That kitty could inherit its father’s desirable eyes (traits include thicccbrowz) or fur pattern (like totesbasic).
Let’s back up.