How would you solve this? This may not be the answer you want but I am skeptical of any website being around for very long. I would get something that can con

How would you solve this? This may not be the answer you want but I am skeptical of any website being around for very long. I would get something that can control a chipping and etching tool capable of carving designs and words into extremely hard rock, then find caves that go deep into mountains that are at a high altitude to leave behind whatever was on my mind. The reason I would go for high altitude is plate subduction or ocean level sea rise could submerge some caves at or near sea level. I would avoid soft rock caves and instead try to find very hard rock and mountains that contain massive solid slabs of rock vs. layers of different elements that could easily shatter on impact from asteroids. Some may consider this graffiti however explorers in the distant future may find it interesting. Just like parity data I would repeat my carvings in many caves as some will be destroyed. I would then make videos and pictures of my etchings and upload them to the websites and archives that may be around for a couple decades. This is probably just me, but I would never pay a site to keep something around. Businesses fold every day that were pinky-promised to be around for lifetimes.