# What is Space Blocks?

Inscription #83,851,681: a 1 MiB image on Bitcoin, home at spaceblocks.art.

URL: https://blockspace.wiki/answers/what-is-space-blocks/

[Space Blocks](https://blockspace.wiki/glossary/space-blocks/), at spaceblocks.art, is inscription #83,851,681: one JPEG of 1,047,584 bytes, 99.9 % of 1 MiB. It was inscribed in block 881,188, in one transaction of 1,054,167 WU, 26.4 % of the 4,000,000 WU [block weight](https://blockspace.wiki/glossary/block-weight/) limit. The site's second page lists the inscriptions block.space classes as [whole-block](https://blockspace.wiki/glossary/whole-block/) works, largest first.

Sources:

- The spaceblocks.art site: README, index.html, whole-blocks/ and tools/build.py · https://spaceblocks.art
- The project list at block.space/projects · https://block.space/projects
- Blockspace Holdings records

Updated: 2026-10-20