Simple off-chain applications framework for Ethereum.
Counterfactual is a simple off-chain framework for building state channel applications on top of the Ethereum blockchain. It aims to make it simpler to build permissionless applications that have instant finality with zero-fee transactions.
You can learn more about what state channels are by reading our whitepaper or a less technical written description. Further, if you want to dive into the specifications of the Counterfactual protocol you can read them here.
||Contracts implementation of the Counterfactual funding protocol|
||Contracts implementation of an AppInstance Adjudicator|
||The core state channels client that a user runs|
||A JS API for interacting with off-chain apps|
||Wrapper around API calls to a Node|
||Shared type declarations|
||Shims for external library typings|
- Join us in Discord to help with development or to hang out with some ethereum hackers :)
- Create a new issue to report bugs
- Fix an issue. Counterfactual is an Open Source Project!
The Playground currently only supports the Kovan network.
Make sure you have Yarn v1.17.3 installed. For easy management of specific Yarn versions, we recommend using Yarn Version Manager (YVM).
To install the dependencies:
It is recommended (optional) that you installed
solc compiler binary on your machine (installation guide) and specify the following in your
To build all packages:
To clean all packages:
To lint all packages:
To also apply automatic fixes:
To run all tests:
To run E2E tests:
- If you're using E2E tests for the first time or have done recent changes to the code, run:
- If you're re-running tests or writing new scenarios, run:
NODE_EXTENDED_PRIVATE_KEY="..." yarn test:e2e
See the "Funding the Hub Account for Playground Testing" section on the Simple Hub Server package for more information about