100 years is too long time. Modern science don't know, how to make something, which will exist so long. This is because, even when we could make machine which will work so long, nobody could guarantee existence of jurisdiction where machine will be. And to move machine to other place will need some people, but people active lifetime is much less.
For this problem, even Darpa created special research program and at the moment only exists one serious applicant - https://100yss.org/
You could try to ask some of Japanese oldest organizations to host your page, as they have few entities existing hundreds years. But you should ask not one but few, I think at least 3, because just few years ago bankrupted 700-years old Japanese bank.
Other possible candidates - some churches and property communes in Western countries. But also, each additional host will just make higher probability but will not guarantee anything.
Also possible to ask your family to save your site, but even if your family is reliable enough, who knows, how will look like society in 100 years, and if your book/site will be legal.
I think, if you will place something on Moon, exists high probability nobody will reach it in 100 years (I think, large share territory of Moon will be desert like now), so it will save. And yes, it is possible to make laser communication system, so somebody could buy components for some reasonable cost and make call and receive data from your site there.
For this problem, even Darpa created special research program and at the moment only exists one serious applicant - https://100yss.org/
You could try to ask some of Japanese oldest organizations to host your page, as they have few entities existing hundreds years. But you should ask not one but few, I think at least 3, because just few years ago bankrupted 700-years old Japanese bank.
Other possible candidates - some churches and property communes in Western countries. But also, each additional host will just make higher probability but will not guarantee anything.
Also possible to ask your family to save your site, but even if your family is reliable enough, who knows, how will look like society in 100 years, and if your book/site will be legal.
I think, if you will place something on Moon, exists high probability nobody will reach it in 100 years (I think, large share territory of Moon will be desert like now), so it will save. And yes, it is possible to make laser communication system, so somebody could buy components for some reasonable cost and make call and receive data from your site there.