3/5 🧵 The ugly part is that blockchains are harder to upgrade than banks or big tech platforms. Apple, Signal, or Cloudflare can decide to migrate cryptography and push the change from the top down. Crypto can’t. Users control keys, many won’t understand what action is needed, some lost their keys years ago, and some wallets are effectively abandoned. So this stops being just a cryptography problem and becomes a coordination nightmare.
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