Ark Invest: About one-third of Bitcoin supply still faces potential threats from quantum computing

Ark Invest and Unchained jointly released a report stating that although most of the Bitcoin supply is secure against breakthroughs in quantum computing, approximately 34.6% of Bitcoin remains at potential risk.

The threatened amounts include about 5 million BTC (25% of total supply) that are transferable due to address reuse, approximately 1.7 million BTC (8.6%) stored in early P2PK addresses, and around 200,000 BTC (about 1%) affected by the P2TR address type. If quantum computers are able to break Bitcoin's elliptic curve cryptography (ECC), these funds could face the risk of theft, but this stage is expected to take years to achieve. Ark Invest believes that this falls under "long-term risk," giving the Bitcoin community ample time to research and implement quantum protection measures.