The much-anticipated sale of a debut collection of "Quantum Cats" Bitcoin inscriptions by the Ordinals project Taproot Wizards was marred by technical issues on Monday, leaving users frustrated and forcing an embarrassing delay. The planned sale of around 3,000 digital cats, designed to honor a Bitcoin improvement proposal known as OP_CAT, commenced with a two-hour "whitelist" window at 17:00 UTC (noon ET) on Monday, but this had to be postponed until Tuesday due to the issues encountered. "There’s been an incredible demand for the cats today, and our servers simply couldn’t handle the amount of people who were trying to mint," Taproot Wizards posted on X.