Crypto’s favorite maxim, “don’t trust, verify” wasn’t followed in the case of Coldcard’s code. Jonathan Goodman followed the rules for keeping his bitcoin safe. The hardware wallet holding his keys, a Coldcard, had never been connected to the internet. He kept it stored in a safe deposit box. The seed phrase, which he’d never shared with anyone, was stored in a second safe deposit box. But on July 29, Goodman said, every wallet he had was emptied, every last satoshi stolen. The Toronto entrepre…
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