Google’s 5-minute quantum chip does in supercomputers’ 10^25-year workload: Is Bitcoin’s cryptosystem still safe?

Google Willow quantum chip achieves a major breakthrough, directly sounding the alarm for Bitcoin’s encryption algorithms.

Google’s Willow quantum chip solves in 5 minutes a problem that would take traditional supercomputers 10 septillion years (10^25 years) to finish. The key point isn’t just speed—it’s a breakthrough in error correction capability. The more qubits you have, the lower the error rate becomes, which is the long-standing “stubborn bottleneck” that has held back quantum computing for 30 years.

For the crypto community, this isn’t sci-fi news. BTC and ETH’s signing system (ECDSA) are, in theory, not able to withstand a sufficiently large quantum computer. Willow’s current scale isn’t enough to crack things outright, but the technical trajectory is already getting steep.

One-line translation: Quantum computers are still far from cracking your private key, but the assumption of “always safe” has already been shaken.

Market impact
- Short term: sentiment is bearish. BTC is trading sideways around $77,337.72, while ETH is at $2,429.61. This kind of news reinforces the narrative that “long-term holdings have hidden risks,” suppressing risk appetite. XRP’s +8.80% move is an independent行情 and unrelated to this.
- Medium term: quantum-resistant cryptography narratives (QRL, QAN, etc.) will be炒作 repeatedly. Bitcoin core developers actually have a fallback plan already—there’s discussion about post-quantum upgrade paths, but no one can say the activation timeline for sure. The real risk window is 5–10 years from now, not tomorrow.

My take
Slightly bearish in the short term. This news will cause some institutions to reassess long-term custody risk. If BTC breaks below the support around $77,000, it could dip toward the $77,337.72 area. But honestly, the “quantum threat” has been talked about for seven or eight years, and each time the news hype mattered more than actual sell pressure. This time is likely the same. ETH’s post-quantum upgrade route has been discussed more thoroughly than BTC’s. If $2,400 holds, there’s no need to be overly pessimistic.

One-line translation: This is a “worth adding to your risk checklist” kind of message, but not a “sell your coins tomorrow” one.

- Coins: BTC / ETH
- Direction: bearish 📉 forecast a drop
- Duration: BTC 12 hours / ETH 24 hours

$BTC $ETH #BTC #ETH

📊 Historical backtest
- After a similar post like “Can quantum threats affect Bitcoin? 80,000 BTC might move after 14 years” (2025-08-02), BTC’s 12h performance was +0.05%. The outlook was bearish ❌ incorrect.
- There were 136 pieces of bearish-news content about BTC historically. In 64 cases, the predicted direction matched the actual price action (accuracy 47%).

$XRP

⚠️ Not investment advice