According to @danheld, a post on X alleges that someone vibe coded a hack that brought down the Cardano blockchain on Nov 22, 2025. Source: Dan Held on X, Nov 22, 2025. The post provides no technical details, on-chain evidence, or links to official Cardano communications, leaving the claim uncorroborated within the post itself at the time of publication. Source: Dan Held on X, Nov 22, 2025. Given the single-source nature of this headline, any market reaction in ADA spot and derivatives would be based on sentiment until official confirmation or refutation emerges. Source: Dan Held on X, Nov 22, 2025.