Galaxy Digital and Coinbase Lead the Charge to Quantum-Proof Bitcoin

The quantum computing threat to Bitcoin has shifted from a distant hypothetical to an urgent industry concern. In July 2026, Galaxy Digital and Coinbase—two of the most influential firms in digital assets—announced major initiatives to prepare the Bitcoin network for a world where quantum computers can break its underlying encryption. These efforts come in response to new research suggesting that roughly one-third of all Bitcoin supply could be vulnerable, and that a cryptographically relevant quantum computer could arrive within the next five to eight years.

Galaxy Digital: A $5 Million, Three-Pillar Bitcoin Quantum Readiness Initiative

On July 21, 2026, Galaxy Digital (Nasdaq: GLXY) launched the Bitcoin Quantum Readiness Initiative, a comprehensive program built on three pillars .

• Developer Grants (up to $5 million): The initiative provides direct funding to open-source developers working on post-quantum cryptography for Bitcoin. Grants are targeted at quantum-resistant transaction schemes, post-quantum signatures, wallet migration tools, and security audits .
• Dedicated Research Track: Galaxy Research established a new publishing pipeline focused specifically on quantum threat analysis and migration strategies .
• Quantum Advisory Council: A council of leading quantum-research experts was formed to guide the development of quantum-resistant migration solutions .

Galaxy began accepting applications for grants immediately upon the announcement, signaling the program is operational, not merely aspirational .

Coinbase: PQ-CoreKMS and the Bitcoin Security Consortium

Coinbase has pursued a two-pronged strategy that combines internal infrastructure upgrades with broad industry coordination.

PQ-CoreKMS (Post-Quantum Key Management System): Coinbase already protects 99.9% of its custodied assets through its CoreKMS key management system. The company is now prioritizing an upgrade to post-quantum cryptographic standards to prepare for the eventual arrival of a cryptographically relevant quantum computer .

Bitcoin Security Consortium: On July 23, 2026, Coinbase announced the formation of the Bitcoin Security Consortium in partnership with BlackRock, Fidelity, Block, and other industry leaders . The consortium's mission is to research and develop open-source solutions to prepare the Bitcoin network for future quantum threats. The group committed $15 million to support its work .

Coinbase's own independent Quantum Advisory Council issued its first report on June 11, 2026, estimating that roughly 7 million BTC are quantum-vulnerable (including about 1.7 million BTC in legacy P2PK addresses) and recommended beginning post-quantum migration planning immediately .

The Scale of the Risk: ~6.9 Million Vulnerable Bitcoin

Multiple independent sources now converge on a similar estimate of the risk, lending credibility to the figure.

• Google's Quantum AI whitepaper (March 31, 2026): This landmark paper found that breaking Bitcoin's ECDSA-256 encryption could require fewer than 500,000 physical qubits—roughly 20× fewer resources than previously estimated—and could crack a private key in approximately 9 minutes. The paper estimated roughly 6.9 million BTC (~one-third of total supply) sit in addresses with exposed public keys .
• Ark Invest & Unchained (March 12, 2026): Their joint report concluded that roughly 35% of Bitcoin's total supply could be theoretically vulnerable .
• Coinbase's Quantum Advisory Council (June 2026): Estimated ~7 million BTC at risk, with ~1.7 million BTC in legacy P2PK addresses where public keys are already visible on-chain .
• Human Rights Foundation (October 2025): Estimated ~6.51 million BTC at risk within five years .

The common figure of ~6.9 million BTC is consistently cited across Google's research, ARK Invest, and market analyses . This at-risk supply includes the estimated 1.1 million BTC believed to belong to Satoshi Nakamoto . At a median price of $70,000, this represents roughly $480 billion in value .

The Quantum Threat Timeline: 2030–2032

The estimated window for "Q-Day"—when a quantum computer can break Bitcoin's encryption—has narrowed dramatically in recent years.

• Google's 2026 research moved the timeline from a distant "decades away" to 5–8 years from mid-2026 .
• Human Rights Foundation (Oct 2025) warned quantum-capable cryptographic attacks could arrive within 5 years .
• Most estimates now place a credible threat around 2030–2032 . Some sources cite 2029 as a potential "quantum doomsday" .

A critical threat vector is the "harvest now, break later" attack, where adversaries collect encrypted data today and store it, waiting for the day quantum computers mature enough to decrypt it .

U.S. Executive Order 14412: Hard Deadlines for Post-Quantum Migration

On June 22, 2026, President Trump signed Executive Order 14412, "Securing the Nation Against Advanced Cryptographic Attacks," which set hard deadlines for the federal government's migration to post-quantum cryptography .

• Federal high-value assets (HVAs) and high-impact systems must migrate key establishment to post-quantum cryptography by December 31, 2030 .
• Digital signatures must migrate by December 31, 2031 .
• The Office of Management and Budget issued implementing guidance (OMB M-26-15) with a five-phase timeline .
• A separate EO on the same day ordered the Department of Energy to lead construction of a "national quantum computer" .

While a June 2025 executive order on cybersecurity existed, the specific post-quantum cryptography mandate with 2030–2031 hard deadlines originates from the June 2026 EO 14412 .

Broader Industry and Protocol Context

The race to prepare Bitcoin for quantum threats extends well beyond Galaxy and Coinbase. Multiple major firms and protocol-level proposals are now in play.

Firm / Proposal	Initiative	Date
Galaxy Digital	$5M Bitcoin Quantum Readiness Initiative (grants + research + advisory council)	July 21, 2026
Coinbase	PQ-CoreKMS upgrade + Bitcoin Security Consortium (with BlackRock, Fidelity, Block)	July 23, 2026
BlackRock, Fidelity, Block	Joined Coinbase's Bitcoin Security Consortium	July 23, 2026
Ark Invest & Unchained	Published joint risk assessment ("Bitcoin and Quantum Computing")	March 12, 2026
Google Quantum AI	Published whitepaper cutting resource estimate by 20×	March 31, 2026
Bitcoin ecosystem (BIP-360 / BIP-361)	Proposed Winternitz hash-based signatures and migration/freeze protocol for vulnerable coins	April–June 2026

Economic Times reported in July 2026 that crypto firms are "racing to prepare defenses" as the quantum threat draws nearer . The convergence of Google's hardware breakthroughs, the U.S. government's hard 2030–2031 deadlines, and mounting estimates of vulnerable BTC has driven a sharp acceleration in industry action through mid-2026 .