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OpenSimWorld is the directory of 3D Virtual Worlds based on OpenSimulator and connected through the HyperGrid. Learn More

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ZetaMex and deceptive business practices
Deceptive business practices. When one calls a property a virtual reality ESTATE - REPEATEDLY - and a 4x4, this is a lie. A SINGLE REGION is a single region. I have had my account canceled. I'll be interested in see if if next month I am charged because apparently language and standard definitions are not to be assumed to be shared realities.

Anyone who was around and paying attention when ZetaMex was the ground zero of open sim drama (did it ever change) will not be surprised.
Why Can't I Post An Event?
I tried to post an event, but I don't see how I go about doing it? Anyways, I am a DJ and I plan to DJ at 3PM on Friday, February 2nd, 2018 with my Great Canadian Grid avatar at the Great Canadian Pub. Any help about posting this would be appreciated.
geneis metaverse changed gird name to gevolution
They moved here: http://logon.gevolutionworld.com:8080, if you are still interested.

It would of been nice if we had a notice, but once I found them and recreated my accounts my sim reappeared in the new grid.
Island Oasis is on OpenSim?
Today I ran across the Halloween region on the Island Oasis grid(created by Sophia Paolino). I thought Island Oasis was a closed world? Or are some parts accessible to OpenSim. I stopped playing Island Oasis cuz no one was there!!! How long has this been available?

Get ready for a fun, family friendly adventure! This ride features scripted NPC Wizard Battles and much more! Total ride time is approx 7 minutes.
Part of the That Place Amusement Grd!

See me after class !
Just to point out that the header on the page reading, "There are no news" is incorrect as news in itself is singular. So it ought to read :
"There is no news" ~ or it could use the multiple "There are no news items", either way would be correct.
Canidio und Elyion feiern Hochzeitstag
Einen ganz herzlichen Glückwunsch von uns allen an das Magier-Ehepaar !
Nun hoffen wir das Video macht Lust auf Party heute Abend und der Ballsaal wird richtig voll ;)
https://lemondhousecafe.blogspot.com/2026/09/canidio-und-e...

Opening Soon! Lollipop Creamery... So Good You Have To Lick It!

UUID-home-grid lookup table, as a Kademlia DHT
Discussion for grid owners and HG enthusiast.

Just wondering how many would love to see this implemented for their sims grids.

One of the issues I find with HG is that most of the time the viewer only sends the UUID of an avatar or a group, and not the grid:port. The sim has a lookup table, but if that UUID has never been seen on this grid it has no way to find its home grid. The viewer may or may not have that info; in any case it does not send it.

Current workarounds are a look up table of visitors, to look at the last message to retrieve the grid info, creator info, leftover GridUser rows, and so on. That is not always possible. My understanding is OpenSim wanted to stay as compatible as stock SL / Firestorm as possible, so I am not discussing the option of having the viewer send these fields to the sim.

The idea that has been in my head for a while is to implement a distributed hash table of avatar and group UUIDs and their home grid:port. The DHT can be implemented with the Kademlia protocol. It was used in Kazaa, eMule’s Kad network and on BitTorrent’s Mainline DHT, Kazaa and the Kad/eMule side is the well-tested. There are C# libraries that already do this, Alethic.Kademlia, kademliath, dht-csharp, so we do not have to write the routing from scratch.

Each participating grid becomes a node in the DHT and seeds its own UUIDs and grid URL. Other grids can query the network to find where to request a profile or send an IM.

About privacy
No avatar information is sent to the DHT, no profile, no online status, no group info. It only says this number belongs to that grid. The grids still have full control to deny a profile request, an incoming message, and so on. So grid admins are in control of their resident privacy.

Assets are not included in the network. They are not needed. The unknown-grid problem is profiles, groups and IMs.

Resources

Just a UUID → grid:port (plus a signature) takes little space. Ballpark 100–200 bytes per record. 1,000,000 UUIDs may be in the low hundreds of megabytes for the whole overlay, and those are distributed across all nodes, so expect something like tens of megs per node even for tens of millions of UUIDs.
Bandwidth is little. A new UUID only needs to be seeded on account creation. UUIDs are immutable so there is no update. Once a day the grid can inform of deleted accounts or other housekeeping (URL change, tombstones).

Security

Records are signed. Only the grid that created the UUID can update or delete it.
I am not worried about “someone published this UUID first, now I cannot use it.” Grids mint their own UUIDs. If a number is already sitting in the DHT, you just create another one that belongs to you. The mapping is not a reservation of identity, it is only a pointer for lookups.

Kademlia and the libraries already take the usual overlay attacks into account, at least at the protocol level:
* Sybil: one operator spinning up many fake nodes
* Sibling / eclipse: crowding a target’s routing table so lookups only hit attacker nodes
* Prefix hoarding: parking nodes so you own a slice of the key space
* Routing-table poisoning: feeding bad contacts
* Churn / flood: join/leave or store spam to wear nodes out

While I am writing this I think it can later be expanded to include land / region search. Same overlay, different key type. Not needed for v1.

Making OpenSim actually a decentralized metaverse

This unknown UUID thing affects mainly Standalones sim and mini-grids, with residents they spend most of their time out on the HG, and most of their visitors are HG visitors. But in general a shared lookup helps the small less popular grids as much as the large ones.

https://github.com/amandaleeang/OpenSim-Aura/discussions


Join us at the Piazza at 3 pm grid time, for a couple of hours of fun and music while Rockin' Robert spins the tunes for us via his live radio station Wax Radio.
The Piazza, where good friends and great music always come together.
bridgemere.outworldz.net:8002:Paradise Lagoon
Save the date and bring a date, because we’re getting ready to throw a party you won’t forget! 🎶🌀

October 18, the Tenth Dimension Grid joins with OSFest2026 to bring you an unforgettable night at Electric Vortex!

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5 PM Grid Time

Come dance, connect, and enjoy the Vortex! 💜⚡
Mark your calendars!

ALL SEPTEMBER LONG

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