ARK Report: Approximately One-Third of Bitcoin Supply Faces Quantum Threat, BIP-360 Proposes Response Path

WuSaidBlockchainW · 2026-03-12T14:53:45+00:00

ARK Invest and Unchained's whitepaper indicates that 34.6% of Bitcoin's supply faces quantum computing risk, while 65.4% is relatively secure. The report recommends upgrading through post-quantum cryptography while discussing the BIP-360 proposal to reduce security vulnerabilities. Quantum computers are expected to be capable of breaking public keys only by the mid-2030s.

WuSaidBlockchainW

2026-03-12 14:53:45

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A joint white paper published by ARK Invest and Unchained shows that approximately 34.6% of Bitcoin supply still faces long-term risks from quantum computing breakthroughs, while 65.4% of the supply is currently relatively secure. Threatened assets include about 5 million BTC that can be transferred due to address reuse, 1.7 million BTC stored in early P2PK addresses, and 200,000 assets in P2TR addresses. The report notes that although quantum computing is a long-term risk, Bitcoin needs to undergo soft fork upgrades using post-quantum cryptography (PQC) standards such as ML-DSA or SLH-DSA. Additionally, the discussed BIP-360 proposal suggests introducing a Pay-to-Merkle-Root output type to reduce vulnerabilities in Taproot’s key path. ARK estimates that quantum computers may not be able to crack the first public key until the mid-2030s. (Cointelegraph)

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