Bernstein says Bitcoin’s selloff already reflects quantum risk and that developers still have time to agree on a post-quantum upgrade path.
Bernstein said in a note on Monday that Bitcoin’s selloff has already priced in much of the market’s fear around quantum computing, arguing that the threat is real but still manageable rather than an immediate existential risk.
Bitcoin’s (BTC) near 50% drawdown from its $126,198 all-time high in October 2025 suggests that the market has “priced in” several risks tied to a quantum breakthrough, partly thanks to technological progress on zero-knowledge privacy and quantum-proof cryptography that “counterbalance” the AI and quantum acceleration, Bernstein said in a Monday note shared with Cointelegraph.
The note lands two weeks after Google researchers said future quantum computers could break the elliptic-curve cryptography used across many blockchains with fewer than 500,000 physical qubits in some architectures, reviving debate over how quickly Bitcoin needs a post-quantum upgrade path. This research suggested a quantum computer could crack a Bitcoin private key in nine minutes, in a theoretical scenario, which is less than Bitcoin’s 10-minute block production time.
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