Main Quantum Risk For Bitcoin Is Consensus, Not Code, Grayscale Warns

Grayscale argues that Bitcoin(BTC) already has the technical tools to survive the quantum computing era, but the real barrier is getting its leaderless community to agree on how — and whether — to protect nearly 6.9 million BTC worth of exposed wallets, including coins attributed to creator Satoshi Nakamoto.

Grayscale Research Findings

The asset manager's research division published a note urging faster action on quantum-resistant upgrades for public blockchains. Zach Pandl, Grayscale's head of research, wrote that "public blockchains do not have CTOs; they are global communities governed by consensus."

The note came after Google Quantum AI published a paper showing that breaking Bitcoin's elliptic curve cryptography would require fewer than 500,000 physical qubits.

That figure represents roughly a 20-fold reduction from prior estimates. Once primed, the machine could execute the attack in about nine minutes.

Pandl identified four key findings from the Google research.

Progress toward a cryptographically relevant quantum computer may arrive in sudden jumps rather than on a predictable curve. Post-quantum cryptographic solutions are already mature and protecting internet traffic. And quantum risk differs sharply across blockchains depending on their architecture, consensus design and block times.

From an engineering standpoint, Pandl argued Bitcoin carries lower quantum risk than rivals due to its UTXO model, proof-of-work consensus, lack of native smart contracts and certain address types that resist quantum attacks when not reused.

Also Read:Solo Miner Nets $210K Bitcoin Reward On Tiny Hashrate, Against 28,000-to-1 Odds

Satoshi's Coins Dilemma

The harder problem involves roughly 6.9 million BTC sitting in wallets where public keys are already permanently visible on-chain. An estimated 1 million of those coins belong to Satoshi Nakamoto.

Binance co-founder Changpeng Zhao raised the issue last week.

He said that if Satoshi's coins move during a migration, "it means he is still around, which is interesting to know." If they don't move, he added, it might be better to lock or burn those addresses.

Grayscale outlined three options: burn the exposed coins, do nothing, or limit the rate of spending from vulnerable wallets.

The firm noted that Bitcoin's community has a history of heated protocol disputes, citing last year's conflict over image data stored in blocks.

Read Next:Is The Worst Over For Stocks? Tom Lee Says 95% Of War Sell-Off Is Done