OpenAI announced on October 26 that its AI system has refuted the long-standing "Exponential Time Hypothesis" (ETH), which concerns the difficulty required to solve certain logical problems. However, this breakthrough does not constitute a practical attack on existing cryptocurrencies, including Bitcoin. Researchers are currently organizing independent reviews to verify OpenAI's claims. OpenAI stated that significant further research is still needed for practical improvements. Ryan Williams claimed he asked OpenAI to check if existing cryptographic systems were affected and relayed that these systems are "evidently safe"; this is a secondhand account and not an independent cryptographic audit.