A stool-based cohort panel service for pharma, consumer health, and food companies needing repeated fecal samples from tightly profiled participants. Researchers on r/science and HN complain that building longitudinal microbiome cohorts is slow, expensive, and operationally messy, especially when dietary, lifestyle, or disease-specific criteria are required. GutTrust curates opt-in donor communities with rich metadata (diet, meds, wearables, EHR links) and handles: - IRB-ready consent flows and tokenized identity - smart matching to study protocols and inclusion/exclusion criteria - at-home collection kits with tracking and automated reminders - scheduled multi-timepoint sample collection with automated payments. The moat is in the longitudinal, labeled microbiome dataset and sponsor-side tools (APIs, dashboards) for repeat access; revenue from per-study project fees plus annual subscriptions to a “standing panel” capacity.