While archives exist for preservation, the most "verified" way to own ROMs is to dump them yourself or use official modern releases:

An "all-in-one" archive typically contains over 700 North American releases, plus hundreds more from the PAL (Europe) and Super Famicom (Japan) regions. Having a verified set allows you to experience the full spectrum of the console’s capability. The Heavy Hitters

We applied the pipeline to a hypothetical "All SNES ROMs Archive" (size: ~35 GB uncompressed, 1,757 unique ROMs).

Digital Preservation Working Group Date: April 12, 2026 Subject: Retrocomputing, Data Integrity, Digital Archiving