Bitcoin godfather Adam Back: It will take decades for quantum computing to threaten BTC, and it is not difficult to build a network that is resistant to quantum attacks

Here is the English translation: Google announced on the 9th that its newly developed chip called Willow has successfully overcome the key challenge of quantum computing. They claim that this chip can perform calculations with 105 qubits, solving problems that would take a traditional computer 1 billion years in just 5 minutes. The birth of Willow has sparked heated debates in the crypto community, with concerns that the encryption algorithm of Bit may soon be cracked by quantum computing. Renowned venture capitalist Chamath Palihapitiya recently claimed that around 8,000 Willow chips could crack the SHA-256 algorithm of Bit. However, Bit legend and Blockstream founder and CEO Adam Back immediately refuted this claim, emphasizing that it is impossible to increase the number of qubits by connecting a large number of chips with 105 qubits. Humans will be far from realizing a computer with 1 million qubits in this decade, or even the next. Regarding the threat of quantum computing, a netizen tweeted on the 21st that a BIP, widespread consensus, and enabling client-side could make quantum computing no longer a problem for Bit. However, for the wealthiest Bit holders, they will block the blockchain for years when transferring Bit to a secure place. In response, Adam Back said that this may not be necessary. Bit has reserved support for future post-quantum (PQ) signature mechanisms through the Taproot leaf node, which can effectively alleviate the fear of quantum computing without the need to currently activate anti-quantum signature computing code. Cryptonews reported that Adam Back's point is that quantum computing may actually promote the security of Bit, as it will drive developers to build a network resistant to quantum attacks, using upgrades like Taproot and implementing post-quantum cryptography technologies to prepare Bit for future quantum threats. Adam Back believes that Bit can use the Taproot upgrade to create a computing code that can withstand quantum computing attacks, ensuring that the computing code has "soft-forking capability" to periodically update the code based on the vulnerabilities exposed by quantum computing, without the need for a comprehensive overhaul of the Bit blockchain. Going forward, Bit's transition to the more efficient and secure Schnorr signature (a more efficient and secure blockchain digital signature method) can further enhance the defensive capability of the Bit protocol. Adam Back emphasized that the threat of quantum computing will not become a reality for at least a few decades, and anti-quantum signature technologies will also introduce more compact and mature solutions in the future. Through the existing Schnorr signature or future anti-quantum signature schemes, Bit users can safely migrate their funds without increasing current transaction costs. He stressed that this mechanism can help the Bit community prepare in advance while maintaining on-chain efficiency.