Key Insights:
- Bitcoin news: European supervisory authorities warned that quantum computing could weaken cryptography security.
- CryptoQuant estimates 6.9 million BTC in legacy wallets face future quantum exposure.
- IBM expects quantum computing to reach commercial use within four years or less.
Recent Bitcoin news highlights a warning regarding quantum computing issued by the three financial supervisors of the European Union. These regulatory authorities cautioned that advancements in quantum computing could undermine the cryptographic protocols securing communications, databases, transactions, and blockchain networks.
However, the EU’s evaluation does not claim that current quantum computers can crack Bitcoin’s cryptography. Instead, the agencies pointed to a forward-looking vulnerability driven by improving quantum capabilities. This report stems from the Joint Committee of the European Banking Authority, alongside its two counterpart organizations: the European Insurance and Occupational Pensions Authority and the European Securities and Markets Authority.
EU News Center on Quantum Alert
The update from the European Supervisory Authorities noted that quantum systems could enhance financial procedures, simulations, fraud detection, pricing models, and compliance duties. Concurrently, the update identified quantum computing as a potential hazard to cryptography, stating the technology might weaken defenses securing databases, communications, transactions, and blockchains.
Additionally, the risk update detailed harvest-now-decrypt-later attacks. Malicious actors can gather encrypted information now and attempt to read it once quantum systems are capable of decryption. The European Commission stated that data holding long-term value might already confront this danger, meaning encryption theft does not demand immediate decryption to pose a future threat.
Consequently, the assessment noted that the Digital Operational Resilience Act mandates financial entities to utilize advanced cryptography to combat emerging risks. The post-quantum roadmap from the European Commission urges member states to initiate transitions by the end of 2026, establishing a 2030 deadline for high-risk applications. This timeline gives roughly three months before the first EU milestone.
Legacy Wallets Hold Bitcoin’s Specific Exposure
That overarching warning ties directly into Bitcoin’s unique vulnerability. Bitcoin relies on cryptographic methods that classical computers cannot realistically break. Ki Young Ju, the founder of CryptoQuant, explained that a sufficiently powerful quantum machine could deduce private keys from revealed public keys. Once a public key surfaces on-chain, Ju noted that its exposure remains permanent.
Significantly, Ju calculated that roughly 6.89 million BTC carry potential quantum exposure. His figures account for 1.91 million BTC located in P2PK addresses, where public keys are openly visible by design, as well as up to 4.98 million BTC that could be exposed following historical spending transactions.
The Bitcoin news coverage also highlights that Ju identified 3.4 million BTC that have remained dormant for over ten years.
That amount includes approximately one million BTC associated with Bitcoin’s creator, Satoshi Nakamoto. Ju suggested that a network upgrade might necessitate owners of exposed coins to relocate them prior to any viable quantum attack, while modifying signature protections would demand network-wide consensus.
Bitcoin News Links EU Timing to Bitcoin Governance
As a result, the EU warning juxtaposes specific timeframes with Bitcoin’s governance requirements. While it does not indicate that an attack-capable quantum computer exists today, the supervisors suggested that cryptographic threats could materialize prior to the commercial viability of quantum systems.
In response, the EU supervisors encouraged market participants and regulators to boost their readiness against emerging technological hazards. The roadmap from the Commission outlines a 2026 transition milestone alongside a 2030 deadline for high-risk systems. While these EU measures target financial sector cryptography, modifications to Bitcoin necessitate collective network agreement.
Regarding Bitcoin, Ju characterized consensus as a distinct hurdle. He pointed to the historical block-size dispute, which spanned over three years and resulted in hard forks, as well as the SegSegWit2x proposal that failed to secure adequate community support. Ju stated that social consensus often lags behind technological progress.
On a related note, Ju brought up the possibility of freezing dormant coins—including addresses tied to Satoshi—during any quantum upgrade procedure. He cautioned that such a strategy might fracture the Bitcoin community and generate competing forks. These prospective actions focus on legacy addresses and exposed public keys rather than any active quantum breach.
This article is for informational purposes only and does not constitute financial, cybersecurity or investment advice. Quantum-computing timelines and Bitcoin exposure estimates remain uncertain.
FAQ
Does a quantum computer currently threaten Bitcoin?
No, current quantum computers cannot break Bitcoin cryptography, but regulators warn of future risks.
How many Bitcoin are estimated to have quantum exposure?
CryptoQuant estimates that 6.9 million BTC in legacy wallets face potential future exposure.
What is the EU’s timeline for post-quantum transitions?
The European Commission targets the end of 2026 to begin transitions, with a 2030 deadline for high-risk systems.
Why are legacy wallets vulnerable to quantum computing?
Once a public key is revealed on-chain in legacy addresses, a powerful quantum computer could potentially derive the private key.
Michael Gachihi Nderitu 
