Study: Quantum breakthrough fit, theo-retically, put about ~35% of Bitcoin for risk

One joint report from Ark Invest and Unchained (drop 12 March 2026) dey warn say if quantum computing breakthrough happen for future e fit theoretically compromise about 6.9 million BTC — about 34.6% of Bitcoin supply — by breaking elliptic curve cryptography. The biggest vulnerable group (~5M BTC) na addresses wey public keys don show before inside past transactions (address reuse and spent outputs). Legacy P2PK addresses hold about 1.7M BTC (and ~1M BTC dey from early wallets, including Satoshi-era outputs). Taproot (P2TR) addresses get roughly 200k BTC and come with extra migration considerations. Modern address types (P2PKH, P2SH, P2WPKH) and majority of current supply still quantum-resistant because dem only reveal hashed public keys. The report estimate say the quantum resources wey required far pass present hardware (around ~2,330 logical qubits and billions of operations), so current risk dey early stage and developers get time to act. Recommended mitigation na migrate funds to post-quantum address formats, adopt BIP-360 (Pay-to-Merkle-Root) or similar, plus possible soft forks or community governance to enable quantum-safe upgrades. Conclusion for traders: no immediate cryptographic emergency, but plenty theoretical exposure dey concentrated for legacy and reused-address groups; make una monitor migration proposals, developer coordination, and wallet-level patching — these ones fit affect long-term custody risk and fit cause market reaction if credible quantum breakthrough date show.
Neutral
Di ripot yarn tok say wan big theoretikal risk wey dey affect about 34.6% of BTC supply but e talk say the quantum hardware wey dey now still far from fit do the attack. That kain combination mean say immediate price pressure go small: short-term market impact suppose soft because no exploit fit work now and developers get time to put mitigations. But the announcement don raise awareness about long-term custody risk — traders and big holders fit hurry to move funds from vulnerable addresses, change custody practices, or for a time prefer exchanges and custodians wey get clear post-quantum plans. If credible quantum breakthrough date or wetin dem fit show for real appear, market fit quickly turn bearish as holders rush to migrate funds and reprice on-chain risk. On the other hand, clear coordinated protocol upgrades (soft forks, BIP-360 adoption, or widely accepted post-quantum address formats) go reduce uncertainty and fit stabilize or even make market bullish over time. Overall, expect neutral near-term price effect, but get possible episodic volatility triggered by news about concrete quantum advances or major migrations.