Data sources
We only use publicly available official registries — grouped below by country. Each source is maintained by a state authority and published for open re-use.
Russia

Federal tax registry
Primary registration data for all legal entities.
Statistics office
Activity codes, headcount bracket, balance sheet classification.
Accounting filings
Annual financial statements filed with the state registry.
Belarus

Unified State Register (USR / EGR)
Belarusian Ministry of Justice register of legal entities and sole proprietors — registration number, status, address and management.
National Statistical Committee (Belstat)
Belstat data on activity codes and the statistical classification of Belarusian organisations.
Poland

Polish National Court Register (KRS)
Official registry of Polish companies, foundations and associations — registration details, status and filings.

Business register (CEIDG)
Central register of sole proprietors in Poland — active status, address, PKD activity codes and start date of the business.
National statistical register (REGON / GUS)
Statistics Poland database with REGON numbers, legal form, activity classification and headcount bracket for every registered entity.
VAT taxpayers white list
Ministry of Finance list confirming VAT status and official bank accounts of Polish businesses.
