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Sovereign Consensus2026.0419 min
Will Quantum Computing End Cryptocurrency?
Q-Day 倒计时：量子计算会终结加密货币吗？
Summary
An assessment of the real timeline and risk quantum computing poses to today’s cryptographic assumptions, and the migration paths crypto networks have before a ‘Q-Day’ break.
Why it matters
Post-quantum migration is a multi-year undertaking; this report separates near-term FUD from the actual engineering runway networks have left.
Key ideas
01
Q-Day is a probabilistic horizon, not a fixed date — but migration lead time is shrinking.
02
Signature schemes, not hashing, are the most exposed layer for most chains.
03
Post-quantum migration paths exist but require coordinated, multi-year upgrades.
Versions
Chinese and English versions of this report.
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