What we're about

The Hyperledger Foundation is an open source collaborative effort hosted by the Linux Foundation and created to advance cross-industry blockchain technologies. Participation is open to all.

Hyperledger Meetup groups have an informal relationship with Hyperledger, and make up a key part of the Hyperledger ecosystem. Participation in a Hyperledger Meetup group is open to anyone--employees of a Hyperledger member company, Hyperledger contributors and developers, and people just passionate about blockchain technology.

For more information about Hyperledger, please visit:

For Hyperledger Meetup Guidelines, please visit:

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Upcoming events (2)

Building an Open Global Climate Accounting System with Hyperledger

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Climate change can be understood as an accounting problem. Humans have 500 Gigatonnes of carbon emissions left that we can deposit into the atmosphere before we cross the 1.5 ℃ threshold which our scientists agree represents a doomsday scenario for human civilization. According to the IPCC, we are on track to exhaust this remaining 500 Gigatonne carbon budget in just 10 years at current emissions levels.

In order to balance our shared global carbon budget, we must have a system in place that will allow us to work from the same trusted numbers. We need a way to account for all of the carbon emissions that we collectively emit and all the carbon emissions that we collectively mitigate or remove from the atmosphere. Just as a corporation depends on its own accounting system, humanity needs its own Open Climate Accounting System to coordinate our actions together on a global scale. Only then can our Governments, Companies, Not-for-Profit Organizations, and individual citizens have the transparency, trust and accountability needed to support the collaborative effort that averting climate change will require.

Linux Hyperledger's Climate Action and Accounting Special Interest Group (CA2SIG) represents a network of technologists, strategists and other SMEs working together to use Blockchain, AI, and IOT and other technologies to help build an open climate accounting infrastructure to record human emissions activity on a global scale. In this presentation, the CA2SIG will provide you with a high-level introduction to Global Climate Accounting, introduce you to some of the work already underway, and share how you can get involved.

Key projects that we will highlight in this presentation will include:

  • The Supply Chain Decarbonization Project

Solving for climate change will require a new era of human collaboration, where we must work together to innovate and change our approach toward everything that we produce and consume. We invite you to join us and become part of the solution!

How to Operate and Extend the Hyperledger Besu Ethereum Client

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Antoine Toulme, Senior Engineering Manager at Splunk and a Hyperledger Besu maintainer, leads this technical workshop about how to operate and extend the Hyperledger Besu Ethereum client.

Spaces are limited so we ask that you register in advance to make sure you have a spot in the workshop.

This workshop will contain two separate sessions -- one for operators and one for developers. You are welcome to stay for the whole event or just dial-in and stay for the content you're interested in.

Operation session (8AM to 10AM Pacific)

  • 30 minutes intro to Besu - what it does, how it works
  • 30 minutes on Besu configuration - environment variables, toml file, cli flags, hidden flags. Docker vs binary installation.
  • 60 minutes on running a Besu network
  • 15 minutes on Besu in dev mode, curl, easy first steps.
  • 15 minutes on Genesis block generation
  • 30 minutes on consortium creation, with monitoring and health report, with a Docker compose.

Developer session (10AM to Noon Pacific)

  • 20 minutes on Besu and Github - source (3 repos), issues, PRs, code checkout, CI.
  • 20 minutes on setting up with an IDE. Run and compile with Gradle. Checks and validations in place with spotless and errorprone.
  • 20 minutes on the main repository content, describing types of tests in place, showing the tree of dependencies between Gradle modules.
  • 30 minutes on adding an opcode to the EVM: show how to add a new opcode, add to the next hard fork revision, how to test it.
  • 30 minutes on how to add a new JSON-RPC method, add tests and docs.

Participants must meet the following prerequisites (Hyperledger Besu Training Workshop Prerequisites instructions):

  • Linux
  • Install docker
  • TODO More here
  • Download repos
  • Sign up for access to the Hyperledger Besu #besu-workshop Discord channel.
  • This channel will be used for tech support before and during the scheduled training.

Past events (47)

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