Hi everyone,

I've been researching quantum computing and its potential impact on Bitcoin, and a key concern came up:

If Bitcoin eventually upgrades to a quantum-resistant signature scheme (e.g., replacing ECDSA), wouldn’t that make current ASIC miners obsolete, since they're all optimized for the current cryptographic assumptions?

That leads me to a few big questions:

Would such an upgrade render all existing mining equipment useless unless hardware is redesigned for the new algorithm?

How would manufacturers like Bitmain and the rest of the ecosystem adapt?

What would be the timeline for this transition if it ever happens? 5 years? 10?

And finally, how would this affect small/retail miners who are still heavily investing in current-generation hardware?

Is this a real threat we’re underestimating, or just distant speculation?

Thanks for your thoughts!