v3 features an improved hidden service directory protocol that makes it harder for malicious actors to "enumerate" or list hidden services. Navigating the Archive Safely
You can distinguish a v3 link by its length—v3 addresses are roughly 56 characters long, compared to the 16 characters used in v2. topic links 3.0 archive
To access the links contained within a Topic Links 3.0 archive, standard browsers like Chrome or Safari will not work. v3 features an improved hidden service directory protocol
Secure versions of mainstream platforms such as The New York Times , ProPublica , or Facebook for users in censored regions. topic links 3.0 archive
The "3.0" in the archive title marks the significant transition from the older v2 onion services to the next-generation .