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You can send a request for debt validation to the debt collector, but that wont require that they prove the debt.
A DV request, provided it is timely, meaning sent either prior to a dunning notice or within 30 days after receipt of a dunning notice, imposes a cease collection bar on the debt collector, which remains in effect until the debt collector has first sent the requested verification. They can choose to cease futher active collection activities, and not send any verification.
To compel proof, you can bring your own civil action, which then provides the plaintiff the ability to compel the production of relevance evidence through the court pre-trial discovery process. Bringing civil action requires the consumer to provide some basis for an assertion of debt not mine, and thus has an initial burden of showing a reasonable basis for the civil action. A simple suspicion is not adequate basis for supporting a civil action.
Trashing your own records is never a good idea.