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Quantum Computing vs Crypto

Quantum Computing vs Crypto

Coverage of the quantum computing threat to Bitcoin and other crypto assets. Migration debates, post-quantum cryptography, and the timeline analysts actually model.

17 articles

Every story we’ve tagged quantum computing. Until recently this was a tail-risk category — something to flag but not actively model. In 2026, with concrete progress from Google, IBM, and quantum-specialist firms, it has become a risk analysts at Standard Chartered, ARK Invest, and Fidelity all now incorporate into long-horizon forecasts.

About this tag

Coverage focus:

  • Technical progress — qubit counts, error-correction milestones, and the specific capability required to break SHA-256 or forge ECDSA signatures
  • Bitcoin-specific exposure — roughly 25% of all BTC sits in addresses with exposed public keys and is therefore vulnerable first; the rest is safer behind hashed scripts
  • Migration debates — the Adam Back (optional upgrades) vs Peter Todd (mandated post-quantum signatures) argument, BIP proposals, and the operational cost of moving every at-risk coin
  • Cross-chain implications — Ethereum’s ECDSA usage, Solana’s Ed25519 design, and which chains have explicit post-quantum roadmaps
  • Market response — quantum-resistant altcoins surging on news, and whether that signal is real or pure narrative

The deeper technical context is in our quantum computing threat to Bitcoin guide. The discussion doesn’t resolve quickly — migrating an entire chain’s signature scheme is a multi-year project — so this tag will keep filling as the situation evolves.