I can't keep my BTC on centralized exchanges because they might go bankrupt or freeze withdrawals. I can't keep my BTC in hot software wallets because my laptop might get hacked. I can't keep my BTC in cold hardware wallets because there could be a bug on the manufacturer's side that exposes my seed phrase. I can't deploy my BTC in DeFi because there's like a new eight-figure hack every month. So where am I supposed to keep my BTC?