Thank you, and how can I check the hash?
I use 7z to check but there seems to be no code like "Info Hash"
The info hash is an SHA1 hash of part of the information in the .torrent file.
Torrent clients use it to identify torrents; they do not use the file or torrent names.
Info hash is
not a hash of the file(s) that will be downloaded when you use the torrent.
You do not need to verify the hash of a torrent download because your torrent client does it for you.
If your client indicates that you have a completed download then you can be confident that you have all the files, without any download errors.
If a completed torrent download appears to have missing or corrupted files than that is most likely the work of your anti-virus app.
What exactly is the info_Hash in a torrent file:
https://stackoverflow.com/questions/28348678/what-exactly-is-the-info-hash-in-a-torrent-file
How Does BitTorrent Work? a Plain English Guide:
https://skerritt.blog/bit-torrent/
If you want to see what's in a torrent file then get Bencode Editor here
https://sites.google.com/site/ultimasites/files