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+FNS (ФНС) - Federal Taxation Service. Also it stores all the data about checks. The thing is, you cannot just query data directly. But there is another way. There exists [one great OFD](https://ofd.ru), that allows "route" that request to FNS and get the data. 
+
+To make a request to FNS (using OFD), you need to do the following in OFD tab:
+
+1. Choose path to the image of a check, that contains a QR code.
+2. In a new dialog you need to zoom to the QT code and adjust contrast, if needed.
+3. Press "ok". If the program anyways cannot recognize QR code, press "cancel" and enter appropriate data manually.
+4. Press "Parse".
+5. In a new dialog, solve a captcha.
+
+Further instructions [here](https://git.foxarmy.org/leca/checks-parser/wiki/export-%5BEN%5D)