Bitcoin Has 3 Years to Survive | Nic Carter on Bitcoin’s Quantum Vulnerability

New research warns quantum computers could crack Bitcoin signatures by 2030–2035, forcing urgent technical upgrades and fraught governance choices to preserve the protocol.

Key Takeaways

Google and Oratomic papers materially lower resources to break ECC-256; worst-case 'on‑spend' attacks could derive private keys within minutes, making many addresses vulnerable.
Two distinct threats: short‑range on‑spend races (transaction theft before confirmation) and long‑range offline cracking of historically exposed public keys, endangering dormant and reused addresses.
Post‑quantum migration is hard: PQ signatures are larger/slower, will affect throughput, and require protocol activation, Satoshi‑coin policy, and broad ecosystem coordination.
Bitcoin governance gap: leaderless culture, developer legal risk, and divergent incentives mean custodians might force forks, burns, or delists if community fails to act.
Policy tradeoffs: options include do‑nothing, burn Satoshi coins, sidechains with custodial rescue, or dual‑signature rollouts—each carries legal, economic, and cultural consequences.
Immediate actions recommended: pick and standardize PQ signature schemes, run legacy+PQ concurrently, discourage address reuse, adopt PQ wallets, and set a clear roadmap before 2030.

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