I have been seeing an increasing number of works watermarked with some form of "repost prohibited and do not use for AI training", e.g.:
https://x.com/hamico_0320/status/1858442842873733548/photo/1
https://www.pixiv.net/en/artworks/125610060
https://www.pixiv.net/en/artworks/125619074
https://www.pixiv.net/en/artworks/124865057
https://x.com/uniunibone/status/1865369532300439606/photo/1
Is there a tag for this like there is for artist signatures or handles?