Hi Sockle,
Thanks for reaching out! So, this is an issue with a confusion of terms.
The Verification API, despite its name, does not have anything to do with the verified numbers on your Dashboard account. The Verification API is used to provide a mechanism for multi-factor authorization of users when logging into a service or account you provide.
The verified numbers on the Dashboard are numbers that you have proven you own or have access to. This article will go through the process of how to verify a number and get it added to the verified numbers list. Please let me know if you have any further questions or run into any other issues.
Thanks,
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