A super simple explanation for people who don’t understand cryptography: Bitcoin wallets have a public key and a private key. If you have the private key, you can move your $BTC—so this should be kept secret and known only to you. The public key is used to receive $BTC. Bitcoin uses elliptic curve cryptography to protect the private key. When you make a transaction, the public key may become visible—but based on today’s mathematics, it’s practically impossible to reverse-engineer the private key from it. Drake is concerned that AI might discover a mathematical shortcut that breaks this assumption. If such a shortcut were found, wallets whose public keys are already exposed could be at risk of theft. Many older $BTC transactions have public keys that are publicly visible. That’s why he suggests moving funds to new addresses where the public key hasn’t been exposed yet—and changing addresses after each use. By the way, Satoshi’s $BTC includes a large amount that already has exposed public keys. If such an attack ever becomes possible, those wallets would likely be the first targets :)