/usr/lib/x86_64-linux-gnu/libdiscid.so is in libdiscid-dev 0.6.1-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libdiscid.so.0.6.1
/usr/lib/x86_64-linux-gnu/libdiscid.so.0.6.1