Ark Invest: Approximately One-Third of Bitcoin Supply Still Faces Potential Quantum Computing Threat

MarsBitNews · 2026-03-12T15:43:03+00:00

Ark Invest and Unchained's report indicates that while most bitcoin is secure against quantum computing breakthroughs, approximately 34.6% of bitcoin still faces potential risk, primarily due to address reuse and early address types. If quantum computers crack bitcoin's encryption, these funds could be stolen, but achieving this would still take years, providing the community with time to research and implement safeguards.

MarsBitNews

2026-03-12 15:43:03

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Mars Finance reports that Ark Invest and Unchained jointly released a report indicating that although most Bitcoin supplies are secure against quantum computing breakthroughs, approximately 34.6% of Bitcoin still face potential risks. The threatened holdings include about 5 million BTC (25% of total supply) that are transferable due to address reuse, around 1.7 million BTC (8.6%) stored in early P2PK addresses, and about 200,000 BTC (1%) affected by P2TR address types. If quantum computers can crack Bitcoin’s elliptic curve cryptography (ECC), these funds could be at risk of theft, but this stage is still expected to take many years to achieve. Ark Invest considers this a “long-term risk,” giving the Bitcoin community ample time to research and implement quantum-resistant measures.

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