Quantum Computing Risks for Bitcoin: What Could Happen?

What if a quantum attack hits SHA-256 outta nowhere? How does that affect miners and wallets? Do we need new wallets for our funds?

Honestly, I don't think it will mess with mining or wallets. Developers will probably just roll out a quantum-resistant update that everyone will need.

That scenario seems far-fetched. Current quantum computers aren't even close to being a real threat to Bitcoin. We have time to adapt, and there’s a ton of info on this forum about it.

FTFY. SHA-256 isn't the weak link here. ECDSA is where the trouble lies. If someone had a quantum computer with Shor's algorithm now, they'd go after old P2PK transactions first.

Bitcoin's mining setup is pretty solid against quantum threats. Worst case, quantum tech could be used for mining, but it wouldn't break the system.

True, but if a government really wanted to take down Bitcoin, they could target Satoshi's coins first and then wreak havoc on the whole network.

The mining infrastructure itself won't be the issue. It's the elliptic curve security that might need a revamp. Expect a quantum-safe hard fork eventually.

Just try it out. There are plenty of ways to test SHA-256 vulnerabilities. It’s a spectrum, not just black and white. Some attacks might impact certain things but not others.

Haha, you really think everyone can just attack SHA-256 like that? If OP could do that, they wouldn't be asking about wallets here.

Even if it's possible to break Bitcoin with quantum tech, we're looking at a hundred years before it happens. For now, it’s all speculation.

That article's author clearly doesn’t get Bitcoin. Mixing up private addresses with private keys is basic stuff. No way someone could mine 2016 blocks in a minute and not cause chaos.

I’m not saying I’m a genius, but this is a tech discussion. People should have some understanding of programming to engage here.

What if the person behind breaking SHA-256 decides to keep it secret? Do they just let the world figure it out or go public and crash everything?

Seems unlikely. The first powerful quantum computers will be with governments, giving Bitcoin devs time to adapt.

You could see someone trying to break an altcoin. Disclosing weaknesses is key. If there’s a flaw, it should be shared widely.

Is quantum computing really the end of the world, or is it just hype? Should we be more worried about mining farms finding free energy?

Imagine if miners realize that Doge’s algo is better. They’ll just switch over for profits, and that’s a bigger threat than quantum attacks.

There’s a thread about tail supply that tackles this. Worth checking out if you’re interested in the details.

A quantum miner could inflate the difficulty massively. Imagine BTC’s diff skyrocketing to 1000 trillion overnight!

Bitcoin will endure, even if the whole chain gets rewritten. It’s decentralized, and people will fight to keep it alive regardless of the chaos.