# Blockspace Token Indexer (BTI)

Live: every byte of every block attributed to the tokens that bought it, in three books. It powers block.space.

URL: https://blockspace.wiki/research/blockspace-token-indexer/

**Status on [blockspacelabs.com](https://blockspacelabs.com): Live**, the third card in the Live group.

## What it is

The Labs site describes the [Blockspace Token Indexer](https://blockspace.wiki/glossary/bti/) in two sentences: "Every byte of every block attributed to the tokens that bought it, in three books: A inclusive, B regional, C content. It powers block.space."

The three books are three answers to how many bytes back a token: [Book A](https://blockspace.wiki/glossary/book-a/) (inclusive), [Book B](https://blockspace.wiki/glossary/book-b/) (regional) and [Book C](https://blockspace.wiki/glossary/book-c/) (content). The [three books](/concepts/the-three-books/) page explains how they differ. BTI works in three layers: [the byte census](/concepts/byte-census-t1/) (T1), [the claims](/concepts/claims-t2/) (T2) and [the books](/concepts/books-t3/) (T3). The full account is on the [BTI](/concepts/bti/) page.

## What the card shows

The card shows the block the books are written to, and the counts of protocols, tokens, operations and Book A bytes. In the reading of 2026-10-20 09:07:11 UTC the books were written to block 972,199, with 21 protocols, 126,866,878 tokens, 623,207,877 operations and 133.7 GB attributed in Book A.

The wiki's own reading, as of block 972,299, 2026-10-20 09:30:48 UTC: books written to block 972,299; 21 protocols, 126,874,922 tokens and 623,681,326 operations; Book A attributed 133.75 GB, which is 17.21 % of the chain's bytes in that range.

## Links

The card links to https://block.space, where BTI's books are shown, and to https://block.space/docs/bti, "How it works". The [block.space](/projects/block.space/) project page describes the site that BTI powers.

Sources:

- The blockspacelabs.com page (index.html) · https://blockspacelabs.com
- Blockspace Labs facts (data/facts.json) · https://blockspacelabs.com
- Blockspace Holdings records
- block.space meter and summary APIs · https://block.space/api/summary

Live figures: books as of block 972,299, 2026-10-20 09:30:48 UTC

Updated: 2026-10-20