| Aspect | Summary | | :--- | :--- | | What it is | A preservation project for optical media. | | Goal | Create verified, bit-perfect disc images. | | Output | A public database of checksums, not the files themselves. | | Key Value | The "gold standard" for disc-based game and software backups. | | Who uses it | Emulation enthusiasts, archivists, researchers, data hoarders. | | How to use | Use ROM managers (ClrMamePro, ROMVault) with Redump DAT files to verify your collection. |
If you want to preserve your own physical discs, follow the guides on Redump.org. If you want to find verified disc images for software you own, you will need to look elsewhere (e.g., the Internet Archive), then use the Redump database to confirm their integrity. redump
Many PS1 games hide "redbook audio" (standard CD audio tracks) in the pregap index. To hear it, you had to physically rewind the CD from Track 1 into a negative time index. Redump was the first to systematically document and preserve these hidden audio tracks that most commercial ripping tools ignored. | Aspect | Summary | | :--- |
No essay on Redump can ignore the legal and ethical complexities of disc image preservation. The project itself does not host or distribute game files; it maintains a database of checksums, logs, and metadata. To actually obtain a Redump-verified image, a user must either dump their own disc (the preferred method) or find a copy from a third party. This careful distancing allows Redump to operate in a legal gray area, protected by the same logic as a card catalogue in a library that does not contain the books themselves. Many PS1 games hide "redbook audio" (standard CD
Nevertheless, the project exists in tension with copyright law, which in many jurisdictions (including the United States) prohibits the circumvention of copy protection, even for preservation. While Redump does not “crack” games, the act of reading subchannel data can technically violate the Digital Millennium Copyright Act (DMCA). Critics argue that Redump enables piracy by providing a perfect blueprint for reproduction. Supporters counter that the project’s strict verification standards and non-commercial ethos serve the public good, preserving digital culture that corporations have repeatedly shown no interest in saving—especially for obscure or commercially unsuccessful titles.