Hrant Gharibyan ⚛️

It’s been almost 10 years since the Blocksize Wars ended and Brian hasn’t changed at all. He still carries the exact same complete lack of humility and understanding. Brian forms the opinion first, along with a prescribed course of action and timeframe, instead of starting by understanding the nuanced problem and tradeoffs. Solving the QC problem later rather than sooner is the best course of action. ➡️ Hastily changing from ECDSA/Schnorr to PQ signatures may make Bitcoin vulnerable to classical computing attacks today. Simply put: make Bitcoin safe against quantum computers just to get pwned by normal computers. ➡️ PQ signatures will likely be 10-125x larger than current ones, and massively reduce throughput. Possibly paving the way for Blocksize Wars 2.0. (h/t @_jonasschnelli_) ➡️ Proposed PQ solutions could be a Trojan horse to implement backdoors for RNGs or PQ encryption schemes. There are examples of the NSA doing this, first discovered by cypherpunk researchers and later confirmed by @Snowden leaks. Given that quantum computers don’t actually exist and likely won’t exist for another 10-20 years, the worst possible course of action is to rush a fix. That’s not to say work shouldn’t be done to prepare, and there is already much work being done. If you’re still worried about quantum computing, you should know that Coinbase wallet infrastructure is vulnerable to QC because of address reuse. In fact, that’s the default for Coinbase Prime, which serves institutional clients. So Brian should probably fix this first. Physician, heal thyself.

It’s been almost 10 years since the Blocksize Wars ended and Brian hasn’t changed at all. He still carries the exact same complete lack of humility and understanding. Brian forms the opinion first, along with a prescribed course of action and timeframe, instead of starting by understanding the nuanced problem and tradeoffs. Solving the QC problem later rather than sooner is the best course of action. ➡️ Hastily changing from ECDSA/Schnorr to PQ signatures may make Bitcoin vulnerable to classical computing attacks today. Simply put: make Bitcoin safe against quantum computers just to get pwned by normal computers. ➡️ PQ signatures will likely be 10-125x larger than current ones, and massively reduce throughput. Possibly paving the way for Blocksize Wars 2.0. (h/t @_jonasschnelli_) ➡️ Proposed PQ solutions could be a Trojan horse to implement backdoors for RNGs or PQ encryption schemes. There are examples of the NSA doing this, first discovered by cypherpunk researchers and later confirmed by @Snowden leaks. Given that quantum computers don’t actually exist and likely won’t exist for another 10-20 years, the worst possible course of action is to rush a fix. That’s not to say work shouldn’t be done to prepare, and there is already much work being done. If you’re still worried about quantum computing, you should know that Coinbase wallet infrastructure is vulnerable to QC because of address reuse. In fact, that’s the default for Coinbase Prime, which serves institutional clients. So Brian should probably fix this first. Physician, heal thyself.