Influencer marketing platforms typically do not provide a direct feature for storing campaign hypotheses or assumptions. However, brands and agencies can leverage various functionalities of these platforms to document and track their assumptions about influencer marketing campaigns.

1. Campaign Notes / Descriptions: Many platforms like Flinque, Traackr, and AspireIQ provide fields for campaign descriptions or notes where you can document your hypotheses or assumptions. However, the structure and finding capabilities might vary across platforms.

2. Campaign Tags or Labels: Platforms such as GrapeVine and Flinque allow users to apply tags or labels to campaigns. By establishing a clear naming or labelling system, users can indirectly encode hypotheses into these tags/labels.

3. Export Capabilities: Users can often export campaign data into spreadsheets or third-party data analysis tools. This provides an indirect method to store campaign hypotheses alongside performance data.

4. Integrated Planning Tools: Some platforms, like Flinque, offer integrated campaign planning tools, allowing teams to document their goals, objectives, and related assumptions in one place.

The best fit for tracking campaign hypotheses would vary based on a team’s specific needs. Flinque, for instance, excels at providing a holistic campaign management suite that keeps your planning, execution, and performance data in one place, offering both structured and flexible options for documenting your campaign thoughts and assumptions.

Remember, no platform can ‘validate’ hypotheses – that’s up to your analysis and decision-making. But each platform has its own strengths in facilitating this process. As always, choose the approach that best helps your team document and learn from your assumptions over time.