What file does this checksum belong to?
Paste an MD5, SHA-1 or SHA-256 digest. If it's in the catalog you'll get the filename, the vendor, and the page where that vendor publishes it.
Submit an entry
Use this for software whose publisher documents a checksum. Include the page where that checksum appears so it can be confirmed.
About
A checksum is a fingerprint of a file's exact bytes. Change one bit and the fingerprint changes completely. That makes it useful for one narrow thing: confirming that the file you have is byte-for-byte the file the publisher shipped.
HashBank is a directory of those fingerprints for openly distributed software, alongside the vendor page where each one is published. If you downloaded an installer from somewhere and want to know whether it matches what the vendor shipped, hash it and look the hash up here.
sha256sum ./the-file.iso
certutil -hashfile .\the-file.iso SHA256
What isn't here
No commercial software, no games, no file-locker links, no anything a publisher hasn't put on the open web themselves. A checksum lookup for that material is a piracy index with extra steps, and it becomes a malware delivery route the moment anyone can add to it. Entries are reviewed before publication for exactly this reason.
A checksum match is not a safety verdict
It tells you a file is unmodified. It says nothing about whether the original was trustworthy. Malware has checksums too. If a hash here matches your file, all you've learned is that your copy matches this catalog entry.