# Will Quantum Computing Kill Bitcoin? Source: https://www.youtube.com/watch?v=rjYFcElfA_s Recap page: https://rapidrecap.app/video/rjYFcElfA_s Generated: 2026-02-22T16:34:23.997+00:00 --- ## Quick Overview Quantum computing, while theoretically capable of breaking current RSA encryption that secures Bitcoin, is not an immediate threat because cryptographically relevant quantum computers are likely 20 to 40 years away, and the Bitcoin community can implement quantum-secure signatures like SLH-DSA long before that capability arrives. **Key Points:** - Quantum computers capable of breaking RSA encryption are projected to be 20 to 40 years away, according to Adam Back (04:09). - Bitcoin can adopt quantum-secure signatures, such as NIST-standardized SLH-DSA, well before cryptographically relevant quantum computers emerge (04:09). - The video highlights the concept of exponential growth in quantum computing capability, suggesting that once a certain threshold is crossed, progress accelerates rapidly (5:17). - The instructor expresses skepticism about the immediate threat, noting that even highly capable AI like ChatGPT might not outperform quantum computers on specific code-breaking tasks yet (5:52). - The energy required for current Bitcoin mining (using specialized hardware shown at 2:34) is significant, contrasting with the hoped-for energy efficiency of future quantum computers (3:06). - The threat is more political and strategic, as governments might be able to crack encrypted documents sooner than the public expects, leading to panic (3:59, 4:03). - The sponsor, TryHackMe, offers cybersecurity training, emphasizing the need for proactive learning to address security holes before they are exploited (00:41). ![Screenshot at 00:00: Sabine Hossenfelder introducing the topic of quantum computing scaling, with an image of a complex quantum processor \(likely Google's Sycamore chip\) displayed next to her.](https://ss.rapidrecap.app/screens/rjYFcElfA_s/00-00-00.jpg) **Context:** This video segment from "Science News with Sabine Hossenfelder" addresses the common fear that scalable quantum computers will render current cryptographic standards, specifically RSA used in Bitcoin, obsolete, thus compromising the security of digital currency. The discussion explores the projected timeline for quantum supremacy relative to Bitcoin's security needs, contrasting the current reality of Bitcoin mining energy consumption with the theoretical potential of quantum calculation speed. ## Detailed Analysis The video directly tackles the question of whether quantum computing will destroy Bitcoin by breaking its underlying RSA encryption. Sabine Hossenfelder argues that while this is theoretically possible, it is not an imminent concern, citing Adam Back's estimation that cryptographically relevant quantum computers are 20 to 40 years away (04:09). Furthermore, Bitcoin has a pathway to become quantum-ready by adopting quantum-secure signatures, like the NIST-standardized SLH-DSA, long before such computers arrive. The video contrasts this with the exponential nature of technological progress: once a threshold is hit, advancement becomes extremely fast (5:19). The host expresses personal skepticism about the current practical uses of quantum computers, noting that even advanced AI tools struggle with tasks that quantum computers are expected to master (5:52). The video touches upon the massive energy demands of current Bitcoin mining (2:34) compared to the expected efficiency of quantum systems (3:06). Ultimately, the threat is framed as a potential political nightmare if governments or malicious actors gain access to breaking capabilities before the transition to quantum-safe protocols is complete, leading to widespread panic over encrypted data (3:59, 4:03). The video ends with a promotion for the sponsor, TryHackMe, a cybersecurity training platform. ### Quantum Threat Timeline - Adam Back predicts 20-40 years until cryptographically relevant quantum computers arrive - Bitcoin can adopt quantum-secure signatures like SLH-DSA before this occurs - The threat is currently more theoretical than immediate. ### Quantum Scaling & Energy - Quantum computing development shows exponential growth once thresholds are met - Current Bitcoin mining requires massive energy expenditure (2:34) unlike projected quantum efficiency - The challenge is scaling qubit error correction (5:14). ### Bitcoin Security & RSA - RSA encryption, used by Bitcoin, relies on the difficulty of factoring large numbers - Quantum computers, using algorithms like Shor's, could break RSA relatively quickly (2031/2036 projections) - The community has time to transition to post-quantum cryptography. ### Sponsor Plug - TryHackMe offers hands-on cybersecurity training to learn about exploits and security holes (00:41) - Discount code SABINE25 is offered for an annual plan. ![Screenshot at 00:05: Title card displayed: "Quantum Computing Scaling" next to an image of a quantum processor.](https://ss.rapidrecap.app/screens/rjYFcElfA_s/00-00-05.jpg) ![Screenshot at 00:12: Image of a hacker typing code, symbolizing the threat of code-breaking.](https://ss.rapidrecap.app/screens/rjYFcElfA_s/00-00-12.jpg) ![Screenshot at 00:16: Image of a "TOP SECRET" folder, representing sensitive encrypted information at risk.](https://ss.rapidrecap.app/screens/rjYFcElfA_s/00-00-16.jpg) ![Screenshot at 00:24: Image of stacked physical Bitcoin coins, illustrating the financial asset under discussion.](https://ss.rapidrecap.app/screens/rjYFcElfA_s/00-00-24.jpg) ![Screenshot at 04:09: Tweet from Adam Back stating quantum threat is likely 20-40 years away and that quantum-secure signatures can be added to Bitcoin over time.](https://ss.rapidrecap.app/screens/rjYFcElfA_s/00-04-09.jpg)