The assessment is based on strong, direct evidence from a highly authoritative source. A Fortune magazine article, noted for its high authority and relevance, explicitly states that Coinbase has moved into stock trading and is using Apex Fintech Solutions to handle the backend operations. This single source directly corroborates every component of the statement. Further supporting this claim, an article from a financial news website confirms a partnership between Coinbase and Apex Fintech Solutions, albeit for an institutional platform for tokenized assets. While not the exact same service, this confirms a working relationship between the two companies in a closely related financial technology space, making the primary claim more plausible.The remaining sources are either irrelevant to the specific claim or provide no contradictory information. The absence of conflicting evidence, combined with a direct confirmation from a credible news source and supporting evidence of a partnership, leads to a high confidence level that the statement is true.