Bitcoin’s quantum computing risks are far from imminent, according to a new report from CoinShares.
The digital asset investment firm says we are “nowhere near dangerous territory,” and quantum computers capable of breaking Bitcoin’s cryptographic security remain at least a decade away.
“As of early 2026, quantum threats are not imminent. Breaking secp256k1 would require quantum systems with millions of logical qubits—far beyond current capabilities.
According to researchers, in order to reverse a public key within one day, an attacker would require a quantum computer with fault tolerance and error limitation performance that has currently not been achieved, and 13 million physical qubits — about 100,000 times more than the largest current quantum computer [1].
In order to break it within an hour [2], it would have to be 3 million times better than current quantum computers.”
In addition, modern Bitcoin addresses keep public keys hidden behind hashes until coins are spent, adding an exponential layer of protection.
In the end, CoinShares calls quantum tech a foreseeable engineering challenge with ample time for defensive upgrades, but not an immediate threat to the network’s 21 million supply cap or proof-of-work.
“For institutional investors, the key insight is that quantum risks are contained, with an extended timeline for resolution. Bitcoin’s architecture provides built-in resilience, enabling proactive adaptations.
As sound money in a digital era, Bitcoin merits consideration based on its fundamentals, rather than overstated technological threats.”
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