API integrations with official and commercial sources

Russian state registries: legal entity register, Rosreestr, Kad.Arbitr, court system, bailiff service, customs, central bank.

Commercial: Spark, D&B, BvD Orbis, Creditsafe, World-Check, Sayari, PitchBook, Crunchbase.

Compliance and crypto: Chainalysis, TRM, Elliptic, Coinbase Analytics.

Platform: a unified gateway (OAuth2, rate limiting, circuit breaker), schema registry (Protobuf, Avro), observability (Jaeger, Prometheus, Grafana), data quality (Pact, Great Expectations).