What is the program / web service that generates a hash of text data in accordance with GOST R 34.11-2012?

Question

Hashing

Hello. In my service, they form xml, and I sign part of the xml with a signature. But the signature does not go through the receiving party. I think hash. But I did not find how to check its correctness. Maybe someone knows an online service for generating a hash or checking it? Or some offline program. It is necessary to form a hash for the xml part.
I tried the cpverify.exe program from Crypto Pro (saved the xml part to a separate file for the signer), but the hash received by this program does not match the hashes that were given to me in the examples of the receiving side.
Also, another programmer from our company, who also worked with signing, says that this program never produced the correct hash for him.