Former Meta and Google Engineer Issues Warning About Quantum Computing and Bitcoin
July 11, 2026
computer could potentially derive private keys from public keys, putting older Bitcoin addresses at risk. While timelines for this threat vary, some researchers suggest a serious risk around 2030, with a potential “Q-Day” looming in 2035. Despite the graveness of this concern, some experts argue that attacking Bitcoin’s mining process with quantum computing would require immense energy, almost equivalent to that of a star. Nevertheless, the industry is actively working on solutions to quantum-proof the blockchain, with proposals like BIP-361 aiming to freeze coins that do not migrate to quantum-safe addresses.
Shyu’s decision to divest from Bitcoin was not solely based on these threats but was also influenced by leverage. He admitted to using excessive leverage, which led to significant losses when Bitcoin’s price plummeted by 50% from $126,000 to the low $60,000s in 2026. This sharp decline triggered automatic liquidations of his leveraged position, highlighting the risks associated with trading on margin. Despite his losses, Shyu maintains that he still believes in the long-term potential of cryptocurrencies and considers himself a bullish investor in the asset class.
As the Bitcoin network approaches the 2028 halving, where the block subsidy will be reduced to 1.5625 BTC, the debate around transaction fees will intensify. Additionally, developers are still in the process of evaluating various approaches to address the quantum computing threat, indicating that the potential impact of these challenges is yet to be fully understood. The dynamism of the cryptocurrency market, as demonstrated by Bitcoin’s recent price movements and mining difficulty adjustments, underscores the ever-evolving nature of this space.
In conclusion, Shyu’s warnings regarding quantum computing and miner incentives present significant challenges to the Bitcoin network’s security and sustainability. While the industry is actively working on solutions to mitigate these risks, the long-term viability of Bitcoin and other cryptocurrencies remains a topic of ongoing debate and development. As the cryptocurrency ecosystem continues to evolve, addressing these challenges will be crucial in ensuring the resilience and relevance of digital assets in the years to come.
