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Event File CRYPTO Bitcoin Cardano

Hoskinson Warns Quantum Threat Could Cost Bitcoin Its Lead

2 reports · First detected 2026-07-25 · Last active 2026-07-27

Quantum computing is viewed as a long-term existential risk for public blockchains because sufficiently powerful machines could undermine cryptographic protections used to secure wallets and transactions. Cardano co-founder Charles Hoskinson argues that governance and the ability to coordinate network-wide upgrades will be crucial if that threat becomes practical, potentially reshaping the competitive order of the cryptocurrency market.

Hoskinson said Cardano’s governance framework and on-chain upgrade capabilities leave it better positioned to respond to severe technical threats. Bitcoin, by contrast, could lose its top market position if its decentralized governance proves unable to coordinate changes required to withstand quantum attacks, he said. The reports did not specify a date when the threat may become viable, an upgrade timetable, or any projected change in market value.

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2 original reports

The Backstory

The history behind this event
Galaxy Digital Says Bitcoin Faces a Real Quantum Threat, but Not Yet an Existential Crisisfirst seen 2026-03-19 · 2 reports · similarity 0.79 · same topic: Bitcoin

Quantum computers could theoretically derive private keys from public keys exposed on-chain, allowing attackers to forge signatures and steal assets. Cybersecurity organization Project Eleven estimates that about 7 million Bitcoin may face long-term exposure, worth roughly $470 billion at recent prices. Most wallets whose public keys have not been revealed are currently unaffected, however, meaning the risk does not extend across the entire network.

Galaxy Digital research head Alex Thorn said on March 19, 2026, that the quantum threat was real but did not yet pose an existential crisis for Bitcoin. Research analyst Will Owens added on March 20 that related proposals had increased markedly since late 2025. Developers are advancing quantum-resistant addresses, BIP 360 and phased upgrade plans, while investors should currently view the issue as a long-term technical challenge.

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