Quantum risk is a migration problem before it is a breaking-news event.
Why it matters
Dismissal and panic both hide the difficult part: changing live systems before a credible attacker can exploit old keys.
What is and is not threatened
Cryptographically relevant quantum computation could derive some private keys from exposed public keys under vulnerable signature schemes. Hash-based mining and address construction have different security margins and are not affected in the same way.
The risk depends on algorithm, key exposure, machine capability and time. A headline about qubit count alone does not establish an attack.
Migration is possible but social
Post-quantum signature schemes can be standardized and introduced through software changes. Networks must decide which algorithms, address formats, transaction sizes and activation rules they accept.
Users and custodians then need to move assets. Lost or inactive funds, legacy software and disputed treatment of unmigrated outputs make the problem partly governance.
Signals worth watching
Watch NIST standards and migration guidance, independent cryptanalysis, error-corrected logical qubits, protocol proposals, wallet support and test deployments.
Do not convert research milestones into a precise break date. GapLimit will distinguish demonstrated capability, expert estimate and scenario.
Source trail
Follow the thread
Next in this roomWhat if banks use digital-asset infrastructure?The next reading continues this idea from a connected practical angle.