SourceSleuth

SourceSleuth is a web app (with a lightweight browser extension) that helps users verify online claims by mapping them to primary sources and showing how the claim changed as it spread. Paste a quote, screenshot text, or URL and it extracts the core claim, finds the earliest reachable instances, and links to original documents (papers, government PDFs, transcripts, datasets) when available. It then produces a short “verification card” with: what’s known, what’s uncertain, key citations, and common misquotes. The product is realistic because it doesn’t promise “truth”; it focuses on provenance, citation quality, and reproducibility. It’s built for speed: one page, one result, exportable citations. Monetization is straightforward: individual pro plans for heavy users and team plans for newsrooms, comms, and research groups. The hard part is data coverage and trust, so it starts narrow (English web + major public sources) and expands via partnerships.