Because Sonic 3 A.I.R. is built to work with a very specific version of the game data, the file has a "legendary" hash (a digital fingerprint) that hackers and modders use to verify if they have the "true" uncompressed file: : B711A909CCE238CA4AF3E517A2EDCA306228EFA5
: This led to a "treasure hunt" across the internet. Fans began sharing guides on how to extract the ROM from old Wii Virtual Console NAND backups or finding it on the Internet Archive before those links, too, were often taken down. 3. The Digital Signature sonic_knuckles_wsonic3 bin file