‘Not your keys, not your coins’ gains new significance as self-custody philosophy evolves

Crypto’s most enduring piece of folk wisdom, “Not your keys, not your coins,” has survived every market cycle since Andreas Antonopoulos first popularized it. But survival apparently wasn’t enough. The phrase is getting upgraded, and the reasons say a lot about where the industry’s head is at right now. The original idea was straightforward: if you don’t hold your own private keys, a custodian controls your assets, and custodians can fail spectacularly. FTX proved that in 2022. Celsius underscored the point. But a growing cohort of developers and community voices now argue that simply holding keys isn’t the whole picture anymore. From keys to descriptors to entropy Wallet technology firm Nunchuk recently proposed a refreshed version of the mantra in a blog post: “Not your keys, not your descriptors, not your coins.” The addition of “descriptors” reflects a shift in how sophisticated Bitcoin wallets actually work under the hood. A wallet descriptor is essentially a blueprint that tells software how to derive and manage your addresses from your keys. Think of it like a map to a safe. Having the key to the safe is useless if you don’t know which building it’s in. In modern multi-signa...