-Next, open the `PGP pathfinder`_. In the "From" field, paste the key
-fingerprint of Linus Torvalds from the output above. In the "To" field,
-paste the key-id you found via ``gpg --search`` of the unknown key, and
-check the results:
-
-- `Finding paths to Linus`_
+Next, find a trust path from Linus Torvalds to the key-id you found via ``gpg
+--search`` of the unknown key. For this, you can use several tools including
+https://github.com/mricon/wotmate,
+https://git.kernel.org/pub/scm/docs/kernel/pgpkeys.git/tree/graphs, and
+https://the.earth.li/~noodles/pathfind.html.