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Who is finding blocks

Mining Pools

Block share by mining pool over a selectable window, with a concentration reading and a note on what pool share does and does not measure.

Block attribution

Who assembled the last blocks.

Largest pool of blocks in this window
Top four combinedShare held by the four largest pools
Pools finding blocksAcross
Concentration indexHerfindahl index of pool share, 0 to 1

Network hashrate in this window: · connecting

Distribution

Share of blocks found.

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Full table

Every pool in the window.

Bitcoin mining pools by block share
#PoolBlocksShareEmpty blocksImplied hashrate
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Reading this carefully

What pool share does not mean.

Pools are not owners

A pool coordinates work for miners who point hashrate at it. Those miners can redirect that hashrate to a different pool in minutes, and many do when policies change. A pool with 30% of blocks does not control 30% of the network’s hardware — it currently coordinates it.

Why concentration still matters

Concentration is worth watching because a pool chooses which transactions go into the blocks it builds. That is a censorship surface, not a rewrite-the-chain surface. The Herfindahl index above sums the squared share of every pool: 1.0 would mean a single pool found every block, and lower values mean block production is spread more widely.