SecondaryProof is a traction verification and update service for secondary marketplaces trading crowdfunded startup securities. As more platforms let early backers resell Reg CF/Reg A+ shares, buyers complain that traction data is stale, inconsistent, or pure marketing. SecondaryProof integrates with issuers’ systems (or with their primary portal’s data) to generate periodic, signed “Performance Update Certificates” that marketplaces display alongside bid/ask data. - Standardized, timestamped traction snapshots (revenue run rate, user counts, burn, cash runway) for each security. - Issuer attestation workflow combined with automated reconciliation to raw data sources. - Market integration SDKs so marketplaces can trigger update requests on volume or price volatility events. - Premium investor dashboards that show historical traction vs. estimated valuation over time. Revenue: marketplaces pay per-listed-security; issuers pay upgrade fees for more frequent updates and investor-relations tooling.