Nexus Link Desk Provenance, not popularity
Link Desk / Where links come from

Current Nexus addresses

Three nodes, one platform behind them. Copy, never retype, and verify the signature when you arrive.

Node 01 nexusb2l7fmqnefwphyy7m5zjhlkytlbo7qbb5lu5dlczr3azgii2gyd.onion
Node 02 nexusma2iqgauqqvjcgds4ckv5xbf272tkfagq4epojjhsgleqpwxiqd.onion
Node 03 nexusabcd6tyfhdwilyitaqiri6tisj2v2hueyjuj6qkvd6azvi5tuqd.onion

An address that loads is not an address that is genuine. The check that settles it takes under a minute.

Chat apps and messaging groups

This is the one channel with a categorical answer rather than a graded one, which makes it the shortest page here and the most useful.

What it proves
Nothing
Risk if trusted alone
Severe
Safe use
No safe use

The categorical part

No Tor market runs support, announcements, or an official presence on a clearnet messaging platform. Not as a secondary channel, not for convenience, not for a subset of users. Anything presenting itself that way is impersonation, and this holds regardless of how established the group looks, how many members it has, or how long it has existed.

The reason is structural rather than a matter of preference. A messaging platform is a company that can be compelled to hand over records, and it identifies its users by phone number or account in a way the whole architecture exists to avoid. A market operating there would be creating exactly the record it spends everything else avoiding, for its most engaged users.

No judgement call requiredYou do not need to evaluate a group, check its history, or count its members. The channel itself is the answer. This is the only place on this site where that is true.

Why the groups exist anyway

Because they work, and the mechanics are worth understanding so you recognise the shape elsewhere.

The variants

What it presents asWhat it is
Official announcement channelSomeone reposting real signed announcements accurately, building a record, until the day they post one that is theirs
Support groupA place to collect problems, which is a list of people currently anxious and inclined to accept help
Mirror botAutomation that posts current addresses, correctly, until it does not, and automation is trusted more than people
Vendor groupImpersonating a vendor rather than the platform, aimed at buyers with an order in flight

If you are already in one

Leaving is not urgent, and taking anything from it is. The group is not dangerous to be in, it is dangerous to act on. Read it if you want, treat every address in it as fabricated regardless of who posted it, and treat any direct message referencing your account or an order as an attack in progress.

One thing genuinely worth doing: nothing you say in such a group is private, and it is a poor place to describe your own activity in specific terms. The membership list is a list of people interested in this subject, which is information in itself.