As quantum computing technology continues to advance at an unprecedented pace, it raises a crucial question for the future of cryptocurrency: what should be done with the bitcoins held by Satoshi Nakamoto and the millions of other BTC that are potentially lost forever? This question gains even more weight as quantum computing could soon have the ability to break the very cryptographic principles that secure Bitcoin transactions today.
The debate has resurfaced recently, with proposals coming from notable figures in the cryptocurrency world, such as Agustin Cruz, a Bitcoin Core developer. Cruz has suggested a new protocol upgrade that would require all Bitcoin holders to transfer their coins to addresses that are resistant to quantum computing threats. This would mean that, after a certain deadline, any bitcoins that remain on old, vulnerable addresses would be rendered irretrievable.
The Impact of Quantum Computers on Bitcoin
Quantum computing represents a real and imminent threat to cryptographic systems like Bitcoin’s. Experts such as Scott Aaronson, a leading quantum researcher, have warned that it’s no longer a question of “if” but “when” quantum computers will become capable of breaking existing cryptographic systems. According to Aaronson, “we need to have a plan in place now,” as the ability of quantum computers to crack elliptic curve cryptography (which Bitcoin uses) may only be a few years away.
Pierre-Luc Dallaire-Demers, a researcher at the University of Calgary, estimates that we might have around five years before quantum computers are powerful enough to crack the cryptographic keys that protect Bitcoin. Given this, it’s time for the cryptocurrency community to start addressing this problem seriously.
The Dilemma: Should We Erase Satoshi Nakamoto’s Bitcoins?
One of the most pressing questions in this debate is whether we should allow entities like Google or Microsoft to seize control of Satoshi Nakamoto’s bitcoins—which are estimated to be worth around 100 billion dollars—as well as the millions of BTC believed to be lost. After all, these coins, if left unprotected, would be at risk of being accessed by any party with a sufficiently powerful quantum computer.
Jameson Lopp, a well-known cypherpunk, has weighed in on this issue, agreeing with Agustin Cruz that it might be necessary to destroy the bitcoins that are vulnerable to quantum attacks. He argues that, should quantum computing become a threat, we would have no choice but to eliminate the ability to spend bitcoins secured by outdated cryptography (ECDSA). He believes that failing to do so would make millions of BTC vulnerable to theft, which would undermine Bitcoin’s value and stability.
Pieter Wuille, a prominent Bitcoin developer, echoes these concerns, saying, “If and when quantum computers can break elliptic curve cryptography, we will have no other option than to destroy the ability to spend these coins. Otherwise, millions of BTC will be vulnerable to theft, and Bitcoin’s value will collapse.”
The Financial Incentive: Protecting the Network
The central incentive in Bitcoin is the financial stake everyone has in maintaining its security. The 21 million BTC limit is not only a technical feature but also a critical economic principle. Any large-scale introduction of lost or unclaimed BTC into circulation could lead to significant devaluation, affecting all holders.
There is also a philosophical issue at play here. Bitcoin was designed to be censorship-resistant, meaning no one should have the power to take away someone’s bitcoins. Destroying BTC or rendering them inaccessible contradicts this foundational principle. Yet, allowing these coins to fall into the hands of powerful corporations like Microsoft would be equally problematic.
The BTC held by Satoshi Nakamoto and others who have lost their keys could easily create an inflationary pressure that would destabilize the entire system. Allowing these coins to circulate would represent a dangerous precedent that could shift control from the community to a few large entities, undermining the decentralized nature of the network.
The Technical Side: What Are We Protecting?
Bitcoin relies on SHA-256 hashing and asymmetric cryptography to secure transactions. The elliptic curve cryptography used (secp256k1) underpins the relationship between public and private keys. When a Bitcoin is transferred, the transaction is essentially unlocking a small piece of code called a “UTXO” (Unspent Transaction Output). The private key corresponding to the public key is the key to unlocking and spending these BTC.
However, quantum computers, using Shor’s algorithm, could potentially reverse-engineer a private key from a public key, rendering Bitcoin vulnerable. This threat primarily affects older types of Bitcoin addresses, such as P2PK (Pay-to-Public-Key) addresses, which directly expose public keys in the transaction. Modern addresses, however, obfuscate the public key through a hashing function, providing some protection.
That said, if quantum computers reach their full potential, even modern Bitcoin addresses could become vulnerable. As Jameson Lopp has noted, it will take a significant migration effort to move all Bitcoin to secure, quantum-resistant addresses, and this could take years. It’s likely that within five to ten years, the Bitcoin network will need to implement new security measures to stay ahead of quantum threats.
How Long Will It Take to Migrate Bitcoin?
The process of moving all Bitcoin to quantum-resistant addresses is not simple or quick. Experts like Jameson Lopp estimate that it could take up to six months of block space to migrate all BTC, excluding microscopic UTXOs (which could be ignored in the process).
Realistically, this migration might take several years, especially as transaction fees increase and some users delay the process. The window of opportunity to move Bitcoin to secure addresses will likely close within a few years, leaving any untransferred BTC permanently vulnerable.
Conclusion: What Should Be Done?
The debate over whether to destroy or protect the lost bitcoins held by Satoshi Nakamoto and others is deeply philosophical, with strong arguments on both sides. On one hand, there’s the desire to protect the integrity of the network and prevent a handful of entities from gaining access to huge quantities of Bitcoin. On the other, there’s the principle of censorship resistance, which Bitcoin was built to uphold.
The advent of quantum computing is real and presents an urgent challenge. The decisions made in the coming years could define the future of Bitcoin, its security, and its economic role. As we look to the future, it’s clear that the Bitcoin community will need to balance philosophical principles with practical solutions to ensure the longevity and integrity of this groundbreaking technology.
Should we be worried about the threat of quantum computing advancements to Bitcoin?
— Jameson Lopp (@lopp) March 13, 2025
One way or another, whether we do something or do nothing, inviolable properties of Bitcoin will eventually be violated.https://t.co/ENhUg12HpT
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