I don't know for sure. It's 64-length hex string (not 156 like a lot of people are reporting), the same output as a sha256 checksum. Looks an awful lot like so

I don't know for sure. It's 64-length hex string (not 156 like a lot of people are reporting), the same output as a sha256 checksum. Looks an awful lot like somebody opened up a terminal and typed in: > $ echo -n "some password" | shasum -a 256