Nic Carter: Quantum Threatens $600B of Bitcoin

Nick Carter discusses the significant threat that quantum computing poses to Bitcoin, estimating a 70-80% chance of a breakthrough affecting Bitcoin by 2035 and a 25-30% chance by 2030. He emphasizes that substantial investments have been made in quantum computing, with some aimed specifically at breaking Bitcoin. Carter has conducted extensive research on this topic, consulting numerous physicists and investing in a quantum resistance company, raising concerns about potential conflicts of interest.

Carter explains the distinction between classical and quantum computing, noting that quantum computing operates on probabilistic states, allowing particles to exist in multiple states simultaneously. He highlights the complexity of quantum mechanics, which many physicists believe will lead to feasible quantum computing within the next 10 to 15 years. His serious concern about quantum advancements for Bitcoin has led him to consider selling his Bitcoin if the developer community does not mobilize within the next year.

The conversation addresses the challenges quantum computing poses to Bitcoin's security, particularly regarding Satoshi's original coins. Quantum computers require delicate setups and error correction due to their susceptibility to interference. While recent advancements have improved error correction, current quantum systems still lag behind in scaling compared to AI. The discussion emphasizes the risks associated with quantum computing's impact on Bitcoin, including the moral implications of accessing Satoshi's coins and the difficulties in retroactively upgrading wallets.

Carter points out that Satoshi's coins are particularly vulnerable due to their insecure pay-to-public key address format, which is not hashed. Address reuse poses another significant risk, with a substantial portion of Bitcoin's supply vulnerable, especially in exchange cold wallets. Although the likelihood of a quantum attacker reversing a private key within the transaction broadcast window is deemed low, the potential risks remain concerning.

The conversation proposes implementing a new signature scheme using post-quantum cryptography, despite concerns about efficiency and larger key sizes. Transitioning to this new scheme could be a soft fork, but it would require time for user migration. The urgency for planning and action is emphasized, with a hypothetical "Q day" set for 2033, highlighting the tight timeline for migration and community consensus. The speakers express optimism about Bitcoin developers' ability to devise creative solutions, acknowledging that the challenges posed by quantum threats are unprecedented.

The preparedness of Bitcoin core developers is rated alarmingly low, indicating a lack of serious discussion on the quantum issue. Many developers appear to dismiss the threat as unreal, raising concerns among the speakers. They mention contributions from figures like Hunter Beast through BIP 360, suggesting that core developers are not adequately considering these insights. The need for endorsement from influential figures in the Bitcoin community is also highlighted.

Speculation arises about whether new financial actors, such as banks or sovereign nations, might form their own quantum Bitcoin development group to tackle these risks. The speakers conclude that financial institutions may begin advocating for protective measures regarding their Bitcoin investments, potentially leading to significant community changes.

The conversation also touches on geopolitical scenarios involving North Korea, China, and the US government, discussing the strategic value of quantum computing for code-breaking and advancements in AI. The US is positioned as a leader in quantum development, with efforts to create a scalable quantum computer within five years. The potential for the US government to use quantum advancements to crack encrypted data, including Bitcoin, is discussed, raising concerns about the implications of quantum technology.

Carter highlights the risks associated with Bitcoin in relation to quantum computing, likening the situation to being in a flood zone where new cryptography and social consensus are essential. He expresses concern that Bitcoin developers are not prioritizing these risks, which could lead to significant capital allocation issues. While remaining optimistic about Bitcoin, he notes the allure of other cryptocurrencies with clearer governance structures, pointing out that Bitcoin has only seen two upgrades in the last decade.

The conversation raises concerns about the legal complexities surrounding ownership rights, particularly regarding the recovery of coins from shipwrecks. The speaker suggests that whoever claims Satoshi's coins may not be the true owner under US law, raising questions about identity verification and the reliability of cryptography. They express apprehension about the US government's potential control over Bitcoin and the implications if adversarial nations were to acquire Satoshi's coins.

The idea of a Bitcoin Strategic Reserve is proposed, advocating for legislation to ensure the government retains any requisitioned coins. The conversation concludes by noting the accelerating development of quantum technology, driven in part by the challenges posed to Bitcoin.