CryptoSlate
Galaxy is putting $5 million behind a project to migrate Bitcoin to a quantum-resistant signature scheme, and the cap table is what makes it consequential: BlackRock, Coinbase and Strategy are co-funding the work alongside Galaxy.
Why it matters
Roughly $460 billion worth of Bitcoin sits in legacy pay-to-public-key outputs that would expose their public keys the first time they're spent. A sufficiently powerful quantum computer could derive the private key from a revealed public key, giving an attacker a window to drain those UTXOs during the spending transaction. The vulnerability is dormant today; the threat is that a future machine gives an attacker a usable window before the network agrees on a fix.
The migration itself would take years. Wallets, custodians, exchanges, hardware manufacturers and millions of individual users all need to coordinate around a new signature standard. Galaxy's framing is that Bitcoin is safe today, but signatures, software, custodians and users would all have to move in the same direction once a credible quantum threat arrives.
Market impact
BlackRock, Coinbase and Strategy sitting on the same side of the table is the first institutional mandate of this kind for a Bitcoin protocol upgrade. The dollar figure is small ($15M combined), but the signal is structural: the largest holders of spot BTC exposure are funding the migration rather than waiting for it. Watch for any movement on a BIP for a post-quantum signature scheme and on wallet-side adoption timelines.
Frequently asked questions
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Why is quantum computing a risk to Bitcoin?
Roughly $460 billion in Bitcoin sits in legacy pay-to-public-key outputs that reveal their public keys when spent. A sufficiently powerful quantum computer could derive the private key from that public key, giving an attacker a window to drain those UTXOs.
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What is Galaxy funding?
Galaxy is putting $5 million behind a project to migrate Bitcoin to a quantum-resistant signature scheme. BlackRock, Coinbase and Strategy are co-funding the work, for a combined $15 million.
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Is Bitcoin at risk today from quantum computers?
No. Galaxy's framing is that Bitcoin is safe today; the risk is that a future quantum machine could arrive before the network, wallets, custodians and users finish coordinating a migration.
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How long would a Bitcoin quantum migration take?
Galaxy says it would take years. Wallets, custodians, exchanges, hardware manufacturers and millions of individual users all need to coordinate around a new signature standard.
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What should investors watch next?
Any movement on a Bitcoin Improvement Proposal for a post-quantum signature scheme, and wallet-side adoption timelines for the new standard.
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