The strongest directly validated evidence is the fetched CryptoSlate article, "Bittensor's TAO plunges 27% after top AI builder exit," which explicitly describes a severe TAO selloff and indicates an approximately 10% drop within one hour. That directly supports the statement that the source reports a sharp hourly decline and sudden volatility. Corroboration attempts on the user-supplied X links failed, so they cannot be used as validated evidence. However, independent search results for Decrypt articles also describe TAO plunging after Covenant AI's exit, which is consistent with the broader event reported by CryptoSlate. Because the main exact claim relies primarily on one validated article and the direct X posts were unavailable, the claim is best rated likely true rather than high-confidence confirmed.