The Bitcoin quantum threat debate moved back into focus after Grayscale head of research Zach Pandl said the bigger issue may be social, not technical. His comments followed a Google paper released on March 30. That paper suggested a quantum computer could break the cryptography protecting Bitcoin with fewer resources than earlier estimates had shown.
Still, Zach Pandl said the main risk for Bitcoin is not a lack of technical solutions. Instead, he said the challenge is whether the community can agree on what to do. He said the problem is “more social than technical.” He also noted that the Bitcoin community has a record of difficult protocol debates.
The discussion now centers on older and vulnerable wallets. In particular, it focuses on coins held in early Bitcoin P2PK addresses and other older formats that may face greater risk in a future shaped by Bitcoin quantum computing.
Bitcoin Quantum Threat Puts 1.7 Million BTC in Focus
The current Bitcoin quantum threat debate is tied to old addresses where private keys may be lost or where coins may remain exposed if quantum computing improves. According to Grayscale Bitcoin research cited by Pandl, about 1.7 million BTC could be vulnerable.
That total includes early dormant Bitcoin wallets, including an estimated 1 million BTC linked to Satoshi Nakamoto. The report said that stash is worth about $68 billion based on the market value cited at the time. As a result, the scale of the issue has drawn attention across the market.
Zach Pandl said Bitcoin faces lower risk than many other cryptocurrencies. He pointed to its UTXO model, proof of work consensus, lack of native smart contracts, and the fact that some address types are not quantum vulnerable. Therefore, he framed Bitcoin quantum threat exposure as narrower than the exposure seen in some other blockchain systems.
Zach Pandl Says Bitcoin Has Three Main Options
According to Zach Pandl, the Bitcoin community must decide how to handle coins whose private keys are lost or inaccessible. He outlined three main options for the network if the Bitcoin quantum threat becomes more urgent.
The first option is to burn the coins. The second is to slow their release by limiting the rate of spending from vulnerable addresses. The third is to do nothing and leave those coins untouched under the current rules.
Pandl said,
“All are conceptually doable, but the challenge is reaching a decision, and the Bitcoin community has a history of contentious debates over protocol changes, including last year’s dispute around image data stored in blocks.”
That quote captured the main point behind his argument. The debate is not only about code. It is also about coordination.
Bitcoin Quantum Computing Debate Revives Old Community Divisions
To explain the social problem, Pandl pointed to the earlier fight over Bitcoin Ordinals. That dispute grew in 2023 after users began putting text and image data onto satoshis, the smallest unit of Bitcoin.
That use of blockspace divided the community. One side accepted it as a valid network use. The other side opposed it and argued that it changed how Bitcoin should be used. Although the public argument later became quieter, the disagreement did not fully disappear.
That history matters in the current Bitcoin quantum computing debate. If the network struggles to agree on inscriptions and blockspace, it may also struggle to agree on how to manage vulnerable Bitcoin addresses and dormant Bitcoin wallets. Therefore, the governance issue remains central.
Post Quantum Cryptography Work Has Already Started
Even so, Zach Pandl said investors “should not fret” right now. He also said, “In our view, there is no security threat to public blockchains from quantum computers today.” In other words, the issue is not immediate at this stage.
At the same time, Pandl said it is “time to get started” on moving blockchains toward post quantum cryptography. That view matched the broader message that followed the Google paper. The concern is not about today’s breach. Instead, it is about future readiness.
According to the report, Solana and the XRP Ledger are already experimenting with post quantum cryptography. Meanwhile, the Ethereum Foundation released its post quantum roadmap in February. Those developments show that some major blockchain networks have already started preparing for a post quantum environment.
Bitcoin Quantum Threat Remains a Governance Issue
The current Bitcoin quantum threat discussion shows that the hardest part may be community agreement. Technical paths exist. However, the community still needs to decide whether to burn vulnerable coins, slow their movement, or leave them as they are.
That is why Zach Pandl described the issue as more social than technical. His point was that Bitcoin may be able to build a response, yet agreement on that response could take time. The history of protocol disputes remains relevant to that process.
For now, the issue stays focused on 1.7 million BTC, older Bitcoin P2PK addresses, and the wider question of how Bitcoin should prepare for quantum computing without changing its core rules too easily.
Disclosure:This article does not contain investment advice or recommendations. Every investment and trading move involves risk, and readers should conduct their own research when making a decision.
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Tatevik Avetisyan is an editor at Kriptoworld who covers emerging crypto trends, blockchain innovation, and altcoin developments. She is passionate about breaking down complex stories for a global audience and making digital finance more accessible.
📅 Published: April 7, 2026 • 🕓 Last updated: April 7, 2026
