Quantum threat lingers over legacy BTC as Ark flags structural tail risk
Ark Invest and Unchained say about 34.6% of Bitcoin—mainly early, reused and Taproot addresses—could be vulnerable if future quantum computers crack today’s cryptography. Summary The report estimates 34.6% of BTC, including 5M coins in reused addresses, 1.7M in legacy P2PK, and 200K in Taproot, could be swept if elliptic curve [...]
