However, for historical preservation, "good enough" is a failure. Missing data can cause games to crash under specific circumstances, break compatibility with modern accuracy-focused emulators, or permanently lose the original engineering quirks intended by the developers.
How does Redump know a backup is perfect? It uses cryptographic checksums.
If the hash matches an existing entry, the dump is verified.
First, a crucial distinction:
Digital preservation isn't just about making a game playable; it's about authenticity. Many early "rips" of games were "bad dumps" that contained errors, were missing data, or had been modified by hackers. redump
: The project tracks regional variants, revisions (v1.0 vs v1.1), and even specific "ring codes" printed on the physical disc to distinguish between different manufacturing runs. Hardware Compatibility
In the world of digital preservation, not all copies are equal. Redump is widely considered the "gold standard" for disc-based systems because: Verification
We are losing the war against entropy. CD-Rs from the early 2000s are already becoming coasters. Pressed discs from the late 80s are delaminating.
A dump is only considered "verified" when multiple independent users dump their own physical copies of the exact same game disc (matching the same region, revision, and serial number) and generate identical checksums. When two or more people get the exact same hash from different physical discs, it proves the dump is a perfect, error-free copy of the factory master. Redump Components: CUE and BIN Files However, for historical preservation, "good enough" is a
You cannot directly create an account; you must request one. However, most requests are granted, especially for those with unique, original discs.
: A "clean" dump must be verified by multiple contributors. If two people in different parts of the world dump the same disc and get identical checksums (MD5, SHA-1), the entry is considered verified in the database.
Redump is the gold standard for video game preservation in the CD/DVD era. By focusing on precision and community verification, the project ensures that the games we love will remain playable for future generations, even as the original physical discs succumb to time.
Redump focuses primarily on video game consoles and computer platforms that utilize optical media, including: It uses cryptographic checksums
In the US, the Digital Millennium Copyright Act (DMCA) makes it illegal to circumvent copy protection, even for archival purposes. The Librarian of Congress grants exemptions every three years, but the language is narrow.
Before a disc image is certified and assigned a "verified" status in the master database, the exact same cryptographic hashes (usually MD5, SHA-1, and CRC32) must be submitted by at least two different users using entirely different physical copies of the disc and separate optical drives. When two distinct physical discs yield identical cryptographic hashes across different hardware setups, the community can mathematically guarantee that the dump is a perfect replica of the factory-pressed master. The Strict Technical Dumping Protocol
To understand Redump's value, you have to understand the "Scene."
However, Redump operates largely in a moral and historical gray zone.
The primary philosophy of Redump is . A backup is only accepted into the database if it is a 1:1 exact copy of the original retail disc, completely unaltered by the dumping process. Why Redump Standards Matter