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Project

mempool.space

Open-source Bitcoin application

Mempool.space is an open-source Bitcoin blockchain explorer and mempool visualizer developed by The Mempool Open Source Project. It was created in 2018 by the pseudonymous developers Wiz and softsimon.

Description sourced from

  • WikipediaOct 13, 2026

    “Mempool.space is an open-source Bitcoin blockchain explorer and mempool visualizer developed by The Mempool Open Source Project.”

Named in 3 pieces

  1. Bitcoin & Mining

    Pieter Wuille Splits the Signature, and Bitcoin Splits Too

    Pieter Wuille proposed segregated witness in Hong Kong in December 2015, and 97.5 percent of Bitcoin transactions spent SegWit in September 2026.

    Dec 7, 2015
  2. Bitcoin & Mining

    Joseph Poon and Thaddeus Dryja Bolt a Network Onto Bitcoin

    Joseph Poon and Thaddeus Dryja posted the Lightning Network paper in February 2015, and public channels fell from 81,755 to 32,518 between 2022 and 2026.

    Feb 28, 2015
  3. Bitcoin & Mining

    Slush Pools Bitcoin's Miners, and Pools Win Nearly Every Block

    Marek Palatinus proposed pooled mining on November 27, 2010, and mempool.space now lists just 290 of the past year's 52,381 blocks as Unknown.

    Nov 27, 2010

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