BlockchainInside the Coldcard Seed Generation Flaw: A Bitcoin Heist That Even a Locked Safe Couldn't Stop
Canadian entrepreneur Jonathan Goodman locked his private key and seed phrase in two separate safes that never touched the internet—yet still lost 18.25 BTC. A Block investigation reveals the culprit: flawed random number generation in Coldcard's firmware, which has already led to the theft of over 1,596 bitcoin.
