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I lost 6.42 BTC overnight. A little over $400,000 at today’s price. I noticed it early this morning when I opened Wasabi and the balance immediately looked wrong. Then I saw the outgoing transactions. None of them were mine. What makes this so hard to understand is that this wasn’t Bitcoin sitting on an exchange or in some hot wallet. My keys were on a Coldcard that had never been connected to the internet and was physically locked away in a safety deposit box. That was literally the whole reason I used that setup. No seed in the cloud. No photo on my phone. No password manager backup. No browser wallet. The BTC had been sitting there untouched for a long time. Then overnight, several transactions went out within minutes and the wallet was basically emptied. I spent the next few hours checking addresses, old devices and everything else I could think of, trying to find some obvious mistake on my end. So far, nothing. That’s the part that bothers me more than the number itself. If I’d signed something stupid or fallen for phishing, at least I’d know exactly where I screwed up. Instead I’m looking at a cold-storage wallet I deliberately made difficult to access, and somehow the coins still moved. I’m documenting the transactions now and tracing where the BTC went. Do I expect to get $400k back? Probably not. It’s a disgusting amount of money to lose overnight, but I’m not going to spend the next six months staring at a blockchain explorer feeling sorry for myself. I made the money once. I’ll make it again.