Certification by analysts on a FinTech platform that harnesses the “wisdom of crowds” is associated with successful initial coin offerings (ICOs). We show that favorable ratings by a group of analysts with diverse backgrounds positively predict fundraising success and long-run token performance. Analysts’ ratings also help detect potential fraud ex ante. We document that analysts have career concerns and are incentivized by the platform to issue informative ratings. Overall, our results suggest that a market-based certification process that relies on a diverse group of individuals is at play in financing blockchain startups.