Bitcoin Faces Quantum Risk As Bernstein Sees 3–5 Year Window For Upgrades
Bitcoin’s quantum problem is still years away, but Bernstein says 1.7 million BTC sitting in early address types could be among the most exposed if the technology ever gets there.
The report also leans on a broader industry view. Quantum experts generally give a 10-year timeline for cryptographically relevant quantum computers, or machines able to break today’s encryption, according to Bernstein’s chart. That gap is part of why the firm argues the issue is real but not urgent enough to trigger panic.
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What Bitcoin Faces First
For now, the pressure sits on old holdings, not the network as a whole. Bernstein said the risk is uneven, with older legacy wallets facing more exposure because public keys are already visible on-chain. By contrast, modern wallet use and better key practices reduce the chance of attack.
The rough number Bernstein cited — about 1.7 million BTC in early P2PK addresses — shows why the topic keeps returning. Those coins would not be the first target of any quantum attack, but they are the clearest example of what could be at stake if hardware advances faster than the network’s response. For now, Bernstein’s message is that Bitcoin has time, though not endless time, to prepare.
Featured image from Meta, chart from TradingView
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