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The Hyperledger Technical Steering Committee election is coming up and we are currently seeking nominations of candidates. Please see the election page on the wiki for more information. The call for nominations closes on September 19th at 17:00 Pacific Time (GMT - 7).

Code & Projects

Hyperledger Besu

  • v1.5.4 now available. Some improvements include:
    • A new privacy JSON RPC API, priv_debugGetStateRoot
    • Better re-org logging 
    • A new debug API, debug_batchSendRawTransaction to send multiple txns with a single call
    • Full release notes here.

Hyperledger Lab: Solang

  • v0.1.3 is now available.
    • Added
      • `import` directives are supported
      • New `--importpath` command line argument to specify directories to search for imports
      • Contracts can have base contracts
      • Contracts can be abstract
      • Interfaces are supported
      • Libraries are supported
      • The `using` library `for` type syntax is supported
    • Changed
      • Solang now uses llvm 10.0 rather than llvm 8.0
      • In line with Solidity 0.7.0, constructors no longer need a visibility argument

Hyperledger Aries Framework Go

Noteworthy Pull Requests

Note that this section is intended to highlight particularly interesting pull requests that need more eyeballs and reviews.

Hyperledger Aries Framework Go

Hyperledger Umbra

Hyperledger Cello

Articles, Training & Tutorials

  • O'Reilly Book "Hands-On Smart Contract Development with Hyperledger Fabric V2" Now available.
  • Becoming a Hyperledger Aries Developer Course - Develop blockchain-based production-ready identity applications with Hyperledger Aries.This course focuses on building applications on top of Hyperledger Aries components—the area where you, as a Self-Sovereign identity (SSI) application developer, can have the most impact. While you need a good understanding of Indy (and other ledger/verifiable credential technologies) and a basic idea of what Ursa (the underlying cryptography) is and does, Aries is where you need to dig deep. Learn more and sign up.


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