Blockchain quantum resistance

Feb 9, 2026

CoinShares report argues only 8% of Bitcoin is realistically Quantum-vulnerable, not 34%

CoinShares published research, pushing back on estimates that 20–50% of Bitcoin faces quantum risk, arguing only ~1.6 million BTC in legacy P2PK addresses, roughly 8% of supply, is realistically targetable. The firm said breaking Bitcoin's cryptography would require quantum computers 100,000 times more powerful than today's and narrowed the true market-disruption risk to just ~10,200 BTC concentrated enough to cause meaningful price impact.

Feb 9, 20264 sources

Blockchain quantum resistance

NEAR Protocol Announces Post-Quantum-Safe Signing Testnet for Q2 2026 Amid Growing Quantum Computing Concerns

Project Eleven Report Warns Quantum Computers Could Break Blockchain Cryptography by 2030-2033

Galaxy Digital's Alex Thorn Says Bitcoin Community Reaching Consensus on Quantum Computing Threat Response

Independent Researcher Breaks 15-Bit Elliptic Curve Key on Publicly Accessible Quantum Hardware, Wins Project Eleven's 1 BTC Q-Day Prize

Ripple Publishes Roadmap to Make XRP Ledger Quantum-Resistant by 2028

Charles Hoskinson attacks BIP-361, says Bitcoin's governance can't solve the quantum problem

Bitcoin's quantum freeze proposal splits the industry; three counter-approaches emerge

Polymarket odds of Satoshi moving Bitcoin double to 9.3% following BIP-361 publication

Bernstein Says Quantum Threat to Bitcoin Is Manageable Upgrade Cycle, Not Existential Crisis

Circle Announces Quantum-Resistant Roadmap for Arc Blockchain

Algorand Surges 50% After Google Research Flags Quantum Threat to Bitcoin and Ethereum

Google Research Warns Quantum Computers May Break Bitcoin Cryptography Sooner Than Expected

Bitcoin developers introduce BIP-360, a quantum-safe address format

CoinShares report argues only 8% of Bitcoin is realistically Quantum-vulnerable, not 34%

BIP proposes Quantum-Resistant Address Migration Protocol

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