Bitcoin Optech helps Bitcoin users and businesses integrate scaling technologies.

We provide workshops, documentation, weekly newsletters, original research, case studies and announcements, and help facilitate improved relations between businesses and the open source community.

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Recent newsletters and blog posts

  • Bitcoin Optech Newsletter #38

    This week’s newsletter gives an update on the planned removal of BIP61 reject messages from Bitcoin Core, links to further discussion about SIGHASH_NOINPUT_UNSAFE, analyzes some new features in the Esplora block chain explorer, provides information about an updated node ban list, and links to videos of talks at the recent MIT Bitcoin Club Expo. Also provided are a new weekly section about adoption of bech32 sending support and the normal list of notable changes in popular Bitcoin infrastructure projects.

  • Bitcoin Optech Newsletter #37

    This week’s newsletter notes a vulnerability in Bitcoin Core versions that are already past end-of-life, asks for help testing release candidates of the next major version of Bitcoin Core, provides an update on the Bitcoin-Dev mailing list, describes recent discussions from the list, and links to a chapter about payment batching in Optech’s work-in-progress scaling techniques book. Also included are descriptions of several notable commits in popular Bitcoin infrastructure projects.

  • Bitcoin Optech Newsletter #36

    This week’s newsletter links to the announcement of the C-Lightning 0.7 upgrade, notes a service outage for the Bitcoin-Dev mailing list, and describes a proposed soft fork to eliminate several old problems in the Bitcoin consensus protocol. Also included are summaries of notable commits in popular Bitcoin infrastructure projects.

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Member Companies

Bitcoin Optech is supported by our member companies.

  • Anchorage
  • BitGo
  • BitMEX
  • Bitrefill
  • Bitstamp
  • BRD
  • Casa
  • Coinbase
  • Electrum
  • Ledger
  • Paxos
  • Purse
  • Square
  • Xapo