author here, I posted about publishing the smart contract[1] which might be interesting to some people as I had no idea how much it would cost prior to doing this.

The source code is on etherscan.io[2] so you can check it for yourself, there are no functions that allow me to remove a post by someone. Whatever ends up there will stay there. Images and videos are not hosted on the blockchain though (thank humanity it's already large enough), so there are always ways to get rid of CP. Right now most of the images there are from imgur.

[1]: https://cryptologie.net/article/425/publishing-my-smart-cont...

[2]: https://etherscan.io/address/0x470fb19D08c3d2eB8923A31d1408c...