Sumsub is a full-stack identity verification and KYC platform serving thousands of clients across more than 220 countries and territories, with purpose-built age-verification flows covering document scanning, biometric liveness checks, and database cross-reference. For adult content platforms with an international user base, Sumsub's breadth of supported ID types and multi-jurisdiction compliance documentation are significant operational advantages. The platform is used in adult-industry workflows and is recognised among the leading commercial-grade verification vendors for sites operating under the UK Online Safety Act and comparable US state mandates.

Integration is via SDK or API, letting the verification flow embed into existing onboarding rather than redirecting users offsite. Pricing is generally per-check, which suits platforms where only a fraction of sessions require full document verification. As with any vendor handling sensitive identity data, operators should run their own security and privacy due diligence before adopting it for user-facing ID collection.

A capable, widely integrated verification platform with strong international coverage and clear experience across regulated, compliance-driven verticals.