Why Adam Backs thinks Bitcoin’s 20-year quantum runway matters more than today’s headlines

Adam Back, CEO of Blockstream, reframes the quantum computing threat to Bitcoin, asserting a 20-40 year timeline before a cryptographically relevant quantum computer emerges. He emphasizes that Bitcoin isn't helpless, as NIST has already standardized quantum-secure signature schemes like SLH-DSA that can be integrated through soft-fork upgrades. The core vulnerability lies in ECDSA and Schnorr signatures on the secp256k1 elliptic curve, but breaking this requires significant advancements in qubit technology – millions of physical qubits – far beyond current capabilities. Migration plans, such as BIP-360, already exist to gradually transition to post-quantum cryptography, protecting vulnerable coins. While BlackRock’s disclosures about quantum risk are standard boilerplate, the real challenge lies in Bitcoin’s governance and ability to coordinate upgrades proactively, rather than reacting to an immediate threat. The focus should be on a long-term roadmap and avoiding panic-driven decisions.

(Source：CryptoSlate)