Bitcoin's Quantum Problem: Decades Away or Imminent Danger?

Bitcoin's Quantum Problem: Decades Away or Imminent Danger?

From No Second Best - A Bitcoin Podcast by Swan Bitcoin

February 19, 2026 · 26 min · Season 2

About this episode

This episode discusses the potential risks quantum computing poses to Bitcoin's security and the validity of these concerns.

Quantum computing is being called Bitcoin's biggest existential risk. Some say it could break elliptic curve cryptography by 2028. Others say that's physics fiction. In this episode of No Second Best, we break down the real quantum threat to Bitcoin, Shor's algorithm, ECDSA exposure, SHA-256 resilience, institutional incentives, BIP-360, post-quantum cryptography, and what would actually have to happen for Bitcoin security to fail. Is this a real long-term risk, or another exaggerated cycle of fear? We separate engineering reality from projection — and explain why the evidentiary standard hasn't been met. https://www.youtube.com/watch?v=uZZkQRqnNE4 https://www.youtube.com/watch?v=s7-l7gzm_PE

People in this episode

Host: Swan Bitcoin

Topics covered

  • quantum computing
  • Bitcoin security
  • cryptography
  • Shor's algorithm
  • ECDSA exposure
  • SHA-256 resilience
  • post-quantum threats

Keywords

  • quantum computing
  • Bitcoin
  • Shor's algorithm
  • ECDSA
  • SHA-256
  • cryptography
  • BIP-360
  • post-quantum

Mentioned in this episode

Organizations: Bitcoin, BIP-360

Products: ECDSA, SHA-256, post-quantum cryptography

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