Weird, the certificate should be fine. Here's a link for Web Archive: https://web.archive.org/web/20251211220119/https://libroot.o...

We also have Tor onion site: http://librootfuuucybrkpvarmpswsxnbsakf2oqqzxncvsqrvc2j73kuu...

And I2P: http://xvqmnhevx32br7m4e7g3yoxfirizo4m3uktym3wnuntbgbr5bvna....