The assessment is "likely_true" because the most relevant primary sources directly support the core elements of the statement. One highly relevant news report from a crypto data platform explicitly confirms that Vitalik Buterin conducted a transaction involving the sale of both KNC and STRAYDOG tokens. A second source, from the same platform, corroborates the sale of KNC tokens by a wallet linked to Buterin. This provides strong, consistent evidence for a significant portion of the claim.However, the statement is not fully verified by the provided evidence. None of the sources mention the sale of MUZZ tokens, nor do they specify that Buterin received USDC and ETH in return. Several of the provided sources were irrelevant, including a Binance trading page, a news article about a technical API update, and a social media post about a different person's transaction.Despite the unconfirmed details, the evidence strongly supports the central claim that Vitalik Buterin sold KNC and STRAYDOG. Because the confirmed parts are specific and backed by the most credible and relevant sources, the statement is considered more true than false.