Dataset: Origin City Archives

November 6th, 2022

Release of the first dataset for Openvoxels, a DAO whose mission seeks to preserve, curate, augment, and promote historical digital artifacts from the metaverse beginning with the virtual world of Cryptovoxels.

New here? Read Part 1:

Parcels 3D Datasets

⭐ https://skfb.ly/oyOxO - Cryptovoxels districts 12-13-19 snapshot

Arweave backups - JSON data backups since 2021 stored on Arweave
CryptoVoxelsArchive.sh - Script used to take daily data snapshots

Sketchfab is the leading 3D model sharing website on the web that many cultural institutions and museums have picked to showcase artifacts on. They offer a wide range of plugins to import models directly into your favorite 3D software easily.

Importing districts from a Sketchfab importer: https://sketchfab.com/importers

With the blender plugin you can search for cryptovoxels 2019 and quickly import chunks from the 12-13-2019 dataset into your project.

You can import as much or as little as you want. I labeled the dataset with the year it was taken as a tag for optimizing search.

We are planning to take another 3D snapshot of the world on the 3rd anniversary of the last one, 12-13-2022, and run a buildathon alongside. Join the M3 discord if you want to help us plan..

Optimization

The biggest district in the collection is Frankfurt comes in at a whopping 150mb and 1.7M triangles. I took a double look when I was able to compress this model down to 3.3mb via Draco using http://gltf.report. I could still could shave 30% with gzip as well, making the final compressed version only 2.1mb. To compare with a different method, Meshopt compression only went to 25mb and broke the collision in Hyperfy.

Comparing uncompressed to Draco and meshopt file size for Frankfurt district, the biggest district in Origin City

The only complaint I heard about Draco is that the size of the WASM library decoder may outweigh size savings for geometry <1MB. If that's all then no biggie - the size difference between uncompressed and other forms of compression like meshopt is substantial in our case.

Comparing compressed file size for the entire Origin City dataset, Draco is 32.1 MB compared to 1.43 GB uncompressed

Use Cases

Digital preservation
- glTF 2.0 is an international standard file format for 3D models
- Snapshot virtual worlds like the Internet Archive Wayback machine
Create living museums
- Recreate CV as it were during a period in time
Alternate realities
- See how Voxels might look with diff skyboxes or weather
Sandbox for rapid prototyping
- Experiment and use to pitch features
- Good ideas can make their way back to main
Home space decoration (scale to tabletop size)
Mixed media art projects / 3D rendering