Composer is a framework for building Blockchain business networks
davidkel [Master] New event handler for hlfv1 connector (#4477)
contributes to #4461

Signed-off-by: Dave Kelsey <>
Latest commit ee327ea Oct 23, 2018

Hyperledger Composer

Hyperledger Composer

Hyperledger Composer is an application development framework which simplifies and expedites the creation of Hyperledger fabric blockchain applications. If you're new to Blockchain, Hyperledger Fabric or Hyperledger Composer, we recommend that you start at the Hyperledger Composer website:

This site will help you get up and running by developing a sample blockchain application to buy and sell houses and apartments in a digital property business network.

Build Status CII Best Practices

For additional help with Hyperledger Composer the following are good places:

Contributing to this repository

We welcome contributions to the code base. If you are interested in becoming a contributor, please read the contributing guide that covers the following:

There is a specific channel on RocketChat for contributors.

Getting started with building an application

Try the online playground to get going quickly.

Suggested reading list is:

Getting in touch

If you have a question on using Hyperledger Composer

If you have found a defect or want to raise a feature requests

If you want to contribute to the develop of Hyperledger Composer


Hyperledger Project source code files are made available under the Apache License, Version 2.0 (Apache-2.0), located in the LICENSE file. Hyperledger Project documentation files are made available under the Creative Commons Attribution 4.0 International License (CC-BY-4.0), available at