Speaking of hash functions, here's what I saved years ago for windows 7 iso:
File: Win7_Pro_SP1_English_x64.iso
Size: 3320903680
CRC-32: ad44db36
MD4: 4c9e5617279b120efa68c26091645a3a
MD5: ed15956fe33c13642a6d2cb2c7aa9749
SHA-1: 0bcfc54019ea175b1ee51f6d2b207a3d14dd2b58
SHA-256: 3dae1a531b90fa72e59b4a86b20216188d398c8c070da4a5c5a44fe08b1b6e55
SHA-512: ab0db0283f61a5bbe44797d74546786bf41685175764a448d2e3bd629f292f1e7d829757b26be346b5044d78c9c1891736d93237cee4b1b6f5996a902c86d15f
Let's hope no cianigger bit-flipping space rays touched my hard drives.