Haichan is an imageboard that runs entirely on the Bitcoin SV blockchain.
Every thread, post and image is embedded within micropayment transactions. It costs less than a cent to post, and everything you post can be tipped or otherwise monetized.
Currently, the board is in alpha mode. If you want to get involved or don't have any Bitcoin SV and would like to try posting, feel free to contact me at email@example.com or #haichan on the IRC freenode network.