—they weren't just moving files. They were building a definitive history. They stripped away the "trash" dumps (bad clones and hacks) and verified the hashes against the original Nintendo Update Servers.
The “Part 1” indicates that the full 1G1R WiiWare set is split into multiple archives (likely due to file size limits on sharing platforms or to ease download management). 1G1R - Redump - Nintendo - Wii WiiWare -Part 1-
Practical recommendation
This collection represents a curated segment of the official Redump database for the Nintendo Wii platform, specifically focusing on the digital distribution service. The "1G1R" (One Game One Release) designation indicates that this set has been filtered to remove duplicates, ensuring that for every unique game title, only a single "best" version is retained. —they weren't just moving files