Step by step
- Keep the URL history rather than deleting it. Store every coomer.su URL you have already filed on, with the date and the outcome. A repost at a new URL is easy to recognise when the history exists and almost impossible to prove when it does not.
- Watch the source, not only the copy. coomer.su republishes from the platform you post on. A repost therefore follows your own posting schedule, which makes the days after a new paid drop the window worth checking rather than a random weekly sweep.
- Re-file quickly and reference the earlier notice. When a coomer.su post returns, file again and cite the previous notice and its date. A repeat notice that shows a pattern is a materially stronger document than a first notice about a single URL.
- Keep the delisting request current. A new URL is a new search result. Add each returning coomer.su URL to the delisting request rather than assuming the earlier one still covers the content.
- Use image matching when the title changes. Reposts frequently drop the stage name from the title to defeat keyword matching. Perceptual hashing of a reference image finds those, because the image is what did not change.
What monitoring on coomer.su can honestly claim
openDMCA polls the aggregator sources directly rather than waiting for a search engine to index a new post, and tags each leak with where it was first seen. Posts found that way are caught before they are searchable, which is a different and more useful event than finding them afterwards.
The honest limit: monitoring finds a repost, it does not prevent one. Nothing openDMCA does stops coomer.su from scraping a new post. What changes is the gap between the repost appearing and the notice going out, and how much of that work you personally have to do.
A daily liveness sweep re-checks URLs that were already marked removed, and reopens any that returned — which is how the system learns that on some hosts "removed" means removed for six days.
openDMCA gives the first two hops away: you can open the still-indexed check and run it on a URL of your own, with no account and nothing uploaded.
One thing that catches people out on coomer.su
openDMCA's takedown table enforces one notice per leak per dispatch round through a uniqueness constraint, which means a coomer.su URL that reappears cannot be re-filed inside the same round even by accident. A returning URL is therefore recorded as a new round rather than a duplicate send, and that round counter is what later distinguishes a host that removes once from a host that removes repeatedly.