Sorry for the late response, I only periodically look for mentions of the scraper. The scraper uses hashing for most systems and attempts to do a sha1 hash of the original rom data. To do this, it pa**es and/or strips out additional headers and flips bits around to get a consistent encoding.

Sorry for the late response, I only periodically look for mentions of the scraper. The scraper uses hashing for most systems and attempts to do a sha1 hash of the original rom data. To do this, it pa**es and/or strips out additional headers and flips bits around to get a consistent encoding.