# blockspace.markets

Blockspace for sale, priced per kilobyte.

URL: https://blockspace.wiki/projects/blockspace.markets/

Status: live (since 2026-10-19)
Site: https://blockspace.markets

## What it is

blockspace.markets is the secondary market for blockspace: bytes already
consumed, resold as inscribed assets priced per kilobyte. Its counterpart for
new bytes, the cost of space in upcoming blocks, is
[space.market](/projects/space.market/).

blockspace.markets is "blockspace for sale, priced per kilobyte". In its
own words, it shows every asset listed for bitcoin on the venues the
block.space [buy board](https://blockspace.wiki/glossary/buy-board/) watches, ranked by what a kilobyte of its
blockspace costs.

## Status

Live, as of 2026-10-20. The project list marks it live from 2026-10-19.

## How it works

A static page is rebuilt every 10 minutes from the buy board's public
listing data. The wallet and buying flow stay in one place, at
block.space/buy. The page shows the cheapest blockspace of each kind
(Counterparty and inscriptions), the 50 cheapest listings overall, and each
venue's live listings with the time it was last read. A listing's price is
the venue's asking price; its blockspace is what block.space's books
attribute to the asset under [Book A](https://blockspace.wiki/glossary/book-a/), read at the books height named on
the listing. The ranking is in [sats per kB](https://blockspace.wiki/glossary/sats-per-kb/). A listing is an offer, not a
sale.

## Key figures

The site has no live figure of its own in this wiki. At 09:22 UTC on
20 October 2026 the page ranked 167,648 listings: 143,232 inscriptions and
24,416 Counterparty listings. The cheapest blockspace then was 38 sats per kB
for an inscription and 115 sats per kB for a Counterparty asset.

## Links

- The site: https://blockspace.markets
- To buy: https://block.space/buy

## Glossary

- **Book A**: The inclusive book: the whole transactions bought for a token, shared where shared. When several tokens share a transaction, its bytes divide among them under the [Shared Claim Axiom](https://blockspace.wiki/glossary/shared-claim-axiom/). In the [partition](https://blockspace.wiki/glossary/the-partition/) it is content + structure + overhead, "bytes bought for you at all", and it is the backing measure. Fees follow Book A.
- **sats per kB**: The price blockspace.markets ranks listings by: a listing's asking price in sats divided by the blockspace block.space's books attribute to the asset ([Book A](https://blockspace.wiki/glossary/book-a/)), per kilobyte (1 kB = 1,000 B). A listing is an offer, not a sale.
- **the buy board**: block.space's board of assets listed for bitcoin on the venues it watches, ranked by sats per kB, with the buy flow at block.space/buy. blockspace.markets is a static page built from its public listing data every 10 minutes.

## FAQ

### Can I buy on blockspace.markets?

No. The page only shows listings. Buying happens at block.space/buy, the one place with the wallet flow, which the page links to.

### How is the price per kilobyte worked out?

The venue's asking price, divided by the blockspace block.space's books attribute to the asset under [Book A](https://blockspace.wiki/glossary/book-a/), as the [buy board](https://blockspace.wiki/glossary/buy-board/) computes it. See [sats per kB](https://blockspace.wiki/glossary/sats-per-kb/).

### How fresh is it?

The page is rebuilt every 10 minutes and every section says the time it is as of. If the board returns nothing, the last page stays, with its own as-of time.

Sources:

- The project list at block.space/projects · https://block.space/projects
- The blockspace.markets site: README, tools/build.py and the page · https://blockspace.markets
- Blockspace Holdings records

Updated: 2026-10-20