# Book B

URL: https://blockspace.wiki/glossary/book-b/

The regional book: the measured regions a token's operations wrote, read or moved through, the transaction's relevant structure and nothing else. In the [partition](https://blockspace.wiki/glossary/the-partition/) it is content + structure, "bytes bought exclusively for you".

A null in the regional book means not measured, never zero.

Sources:

- Blockspace Holdings records
- block.space docs: BTI · https://block.space/docs/bti
- block.space live pages (/, /rankings, /leaderboard, /largest-inscriptions, /heaviest-tokens, /collections, /sync) · https://block.space

Updated: 2026-10-20