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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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Have a glass of wine (included) and relax on this Elven Verdant Leaf Chaise! It's a cozy comfy get away for those long days in the forest.

Canidio und Elyion feiern Hochzeitstag
Einen ganz herzlichen GlĂĽckwunsch 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!

🎧 DJ Drew Blood will be spinning some of the best trance, Deep House, and electronic music out there, with Star Ravenhurst as your hostess.
He has some surprises you won't want to miss!

5 PM Grid Time

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

ALL SEPTEMBER LONG

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hg.gbg-world.com:80:Urban City

Coming to you at 6am - 8am PDT/SLT/OST/Grid Time (2pm to 4pm UK), A Mix of Music in all different languages from around the world,bringing you 2 hours of fun, laughter and banter, kicking off your Friday with a bang!, come one, come all, all are welcome to come and join in party and have fun! hop://alternatemetaverse.com:8002/Alternate%20Metaverse/36...
Coming to you at 6am - 8am PDT/SLT/OST/Grid Time (2pm to 4pm UK), A Mix of Music in all different languages from around the world,bringing you 2 hours of fun, laughter and banter, kicking off your Friday with a bang!, come one, come all, all are welcome to come and join in party and have fun! hop://alternatemetaverse.com:8002/Alternate%20Metaverse/36...

9-11 Memorial - Tower of Voices - by Xi Shi

AMV BECOME A PART OF THE FAMILY!


Some of the most interesting developments in DreamGrid don't arrive with a lot of noise.

Fred Beckhusen just quietly keeps building.
https://www.reddit.com/r/DreamGrid/comments/1wcmv4y/dreamg...
Join us at Little Sweden Norrkoping Sim for a fantastic live performance by singer Jalayo Rhapsody ! 🎤🎶
Every Friday, from 10Am-11am, don't miss out on this amazing experience. Annlie will be your host for the Live Performance, ensuring a lively and engaging atmosphere.
hop://login.digiworldz.com:8002/Little%20Norrkoping/201/12... Viewer
x-grid-info://digi/region/Little%20Norrkoping/201/128/21 Singularity viewer
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Unisciti a noi al Little Sweden Norrköping Sim per una fantastica esibizione dal vivo della cantante Jalayo Rhapsody! 🎤🎶
Ogni venerdì, dalle 10:00 alle 11:00, non perdere questa esperienza straordinaria.
Annlie sarà la tua host per la performance dal vivo, garantendo un’atmosfera vivace e coinvolgente.

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Únete a nosotros en Little Sweden Norrköping Sim para una fantástica presentación en vivo de la cantante Jalayo Rhapsody! 🎤🎶
Todos los viernes, de 10:00 a 11:00, no te pierdas esta experiencia increĂ­ble.
Annlie será tu anfitriona durante la presentación en vivo, asegurando un ambiente animado y lleno de energía.

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Silence reigns in my establishment this morning. After a night of celebrations, dancing... and more besides... quiet has settled in. But... at dusk, the first customers cross the threshold of this magical world, where a whisky and a sweet smile transport you to paradise.
Die Feuerkreis-Themen vom 10. September
[2026/09/10 11:31] Feuerkreis Feuer: Peter Serrano hat das Feuer angezĂĽndet.

Das Zitat von oben ist der Beweis aus dem Openchat, der Peter hat das Feuer tatsächlich 1 Minute zu spät angezündet. Na na na ;)
https://lennardmonday.blogspot.com/2026/09/die-feuerkreis-...

Very cute Enchanted Mushroom Village for your fantasy world! Stop by and grab one! Enjoy!

more added daily Plus explore the Art Gallery Next door to my shop

Check out all of my Pbr's Plus adding more each day

CCI-Grid – Welcome, Train Station, Teleport to all locations in the CCI-Grid.
- CCI SoA Bikerworld – the longest race track in OS, 10 levels, 10 themed zones
- CCI RACING – Nürburgring with Nordschleife, 26 km race track
- Charming, hometown of the Sons of Anarchy
- CCI Lofoten with a large Viking museum
- CCI California sailing School

hg.cc-group.cc:8002:CCI Grid Welcome
Singer Joao Frazao Live from Portugal Today At the Amv Landing Point
Singer and song writer Joao playing for you his Music and Covers
Join him for a 1 hour Show
Everybody is Welcome
hop://alternatemetaverse.com:8002/Alternate%20Metaverse/34...
Bingo Bingo Bingo! at 8am - 10am SLT (4pm - 6pm UK)
Come and join us for a few Games of Bingo
And have a laughter and a banter
Experience a new Bingo system, made special for AMV!
everybody is welcome to come and play
hop://alternatemetaverse.com:8002/Alternate%20Metaverse/36...
Hey you... yes, you! Sit here with me let me buy you a drink. A bit of company, some confidences... a smile. A sense of complicity is a fundamental part of a relationship... Do you want to be my partner in crime?