12d • 💬 Discussion
Bitcoin is quantum-safe!
If you follow the rules that wallets already enforce.
There’s a lot of noise around “quantum computers breaking Bitcoin.” The reality is more boring (and more reassuring):
👉 Bitcoin remains quantum-safe if you use it correctly.
Most risk only appears when users ignore best practices.
The two big rules 👇
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1️⃣ Never reuse addresses after you spend from them
- Once an address is spent from, its public key is revealed on-chain
- Reusing that same address again could expose it to future quantum attacks
- Modern wallets already generate a fresh address every time — let them
Rule:
✅ Receive → Spend → Never reuse that address again
2️⃣ Never give out your xpub (extended public key) unless you fully understand why
- An xpub allows someone to:
- If someone asks for it casually, that’s a red flag 🚩
Best practice:
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- Only use xpubs for dedicated payment systems
- Create a separate wallet with:
- Never mix it with your long-term savings wallet
If you don’t know what an xpub is — that’s fine.
Just know there’s no reason to share it unless you’re intentionally running a payment setup.
The takeaway 🧠
---------------------------
Bitcoin doesn’t fail because of quantum computers.
Bitcoin fails when users reuse addresses, overshare keys, or mix wallets improperly.
Follow wallet defaults.
Segregate roles.
Don’t leak information.
That’s it.
Stay safe. Stack smart. 🟠
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Bitcoin is quantum-safe!
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