Hmm i understand but people might send their links with that tag to YOU if you ask them to but not to anyone else !! 🤔
Or what you can do is, you can ask for a volunteer!! Participants can send their old links to that volunteer and that volunteer can make a list and send it to you !!
![IMG_0024.PNG](https://steemitimages.com/640x0/https://ipfs.busy.org/ipfs/QmQQ4JE6EvTfST8MaZ2aJSUT1j4UoDvCQvAW9kU3M25qYV)