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Quantum Threat As Upgrade
Bernstein acknowledged quantum computing poses a credible threat to Bitcoin but framed it as a manageable upgrade rather than an existential risk.
“Quantum threat to Bitcoin is real, but manageable, according to Wall Street broker Bernstein”
Recent breakthroughs have accelerated the timeline; the challenge is no longer a decade away.
Scaling quantum systems to break encryption remains a complex, multi-step challenge.
The crypto industry has roughly three to five years to prepare.
The highest risk is concentrated in approximately 1.7 million BTC in legacy wallets.
Industry Response
Coinbase is exploring partnerships for quantum-resistant technology.
Vitalik Buterin has publicly advocated preparing for quantum attacks.
NIST is developing new cryptographic standards to withstand quantum threats.
Blockstream CEO Adam Back emphasized current quantum hardware is extremely limited.
Bitcoin mining has no realistic risk from quantum computers.
Legacy Risk and Market Reaction
The most immediate threat is to older Bitcoin wallets using legacy cryptography.
“Bitcoin developers are pursuing proposals including BIP-360 to counter quantum computing”
Newer wallet formats significantly reduce risk.
Bitcoin prices remained stable around $45,000 as of April 8.
The transition will require coordination among open source communities and commercial players.