The statement is directly supported by three provided sources (Evidence 3, 4, and 7), all of which are posts on the social media platform X. They explicitly state that EtherRock #26 was sold for 135 ETH, valued at approximately $607K. While these sources all appear to stem from a single original post by 'DEGEN NEWS', they represent consistent corroboration within the provided evidence set. The other sources are irrelevant to the specific claim.