Bitcoin sees quantum security scrutiny as PsiQuantum builds

PsiQuantum has launched construction of a million-qubit computer and stated that it has no intention of attacking Bitcoin. The announcement has triggered scrutiny of bitcoin quantum attack risk, but the immediate threat profile remains limited in scope.

The company’s denial, combined with available expert assessments and standards work, indicates a measured timeline rather than an urgent disruption. Stakeholders are focusing on preparedness, not panic.

What PsiQuantum’s million‑qubit quantum computer facility is building

Construction has begun in Chicago on a facility designed to house a fault-tolerant quantum computer targeting 1 million qubits, as reported by TradingView. The project’s scale is intended to move beyond laboratory prototypes toward machines capable of addressing real-world problems.

PsiQuantum leadership has publicly disavowed using such capability to compromise cryptocurrencies. “We have absolutely no plan to use a quantum computer to derive a private key from a public key,” said Terry Rudolph, co-founder of PsiQuantum.

Why it matters now for Bitcoin security and exposure

The most relevant attack surface is Bitcoin’s digital signatures, where public keys are revealed on spend; address reuse can increase exposure, said Adam Back, CEO of Blockstream. Mining security via SHA-256 is a distinct concern and is not the primary near-term vector in these discussions.

On timing, a survey summary places a 50% probability window for a “cryptographically relevant quantum computer” around 2030–2035, as summarized by Crypto Valley Journal. That points to advancing readiness while avoiding undue urgency.

At the time of this writing, Bitcoin traded near 71,246 with 3.86% volatility, a neutral 14-day RSI of 55.73, and a bearish sentiment reading. These figures provide market context, not a forecast.

Risk timeline and mitigations for Bitcoin holders

In the near term, mitigations discussed by developers include minimizing public-key exposure, using fresh addresses when spending, and preparing wallet infrastructure for post‑quantum signatures. Migration would prioritize predictable timelines and broad wallet support.

Expert signals: Adam Back timeline and CoinShares exposure estimate

Bitcoin is safe for at least the next 20–40 years, said Adam Back, CEO of Blockstream. This view assumes cryptographically relevant quantum machines remain some years away.

Separately, CoinShares estimates roughly 10,230 BTC are currently exposed due to public key visibility and noted that even immediate theft at that scale would resemble a routine trade.

NIST post‑quantum standards and Bitcoin migration paths

according to NIST, post‑quantum cryptography standards for digital signatures are available. A Bitcoin migration path would center on adopting NIST-approved signature schemes and enabling movement of funds to new, quantum‑resistant addresses once supported.

FAQ about PsiQuantum million‑qubit quantum computer

What has PsiQuantum said about using its quantum computer to attack Bitcoin?

PsiQuantum leadership says it will not use its quantum computer to attack Bitcoin; co-founder Terry Rudolph publicly denied any intent to derive private keys.

How many bitcoins are currently vulnerable to a quantum attack?

CoinShares estimates about 10,230 BTC are currently exposed via public key reuse, and even a theft at that scale would resemble a routine trade.