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Please note: this project is no longer maintained.

Lighthouse is a decentralised, peer to peer crowdfunding application that uses the smart contracts features of the Bitcoin protocol. It lets you create projects and pledge to those projects.

get involved

Mailing lists:

Or sign up for occasional email newsletters on

You can chat to us in the #lighthouse chatroom on Freenode IRC.

If you're a developer, build instructions are at the end of this README.

how to tweak the user interface

You can do some work on the UI without being a Java developer. If you have web design experience modifying the Lighthouse UI will seem quite familiar. Ask for a binary build if you don't want to compile the app yourself, and then run Lighthouse with the --resdir=/path/to/ui/files flag. It should point to the client/src/main/resources/lighthouse directory from this git repository. You can use the Shortcut+S key combination to reload the UI whilst the app is running. Shortcut is the Cmd key on a Mac and Control key on Windows/Linux. The UI is defined by the CSS files and FXML files (similar to HTML but different language).


You can also use the Scene Builder tool to do visual UI design. It can't load main.fxml but everything else should open just fine.

license and legal stuff

The Lighthouse code is under the Apache license, which allows for commercial derivatives.

However the Lighthouse logo and name are not open. In future the logo images and name may be taken out of this repository and put into a proprietary branch. This would be a similar arrangement to Firefox and Chrome. The purpose of this is to ensure that if someone downloads an app called "Lighthouse" they know what they are getting and that it is not, for example, a fork or patched version of the app that may be broken in some way. If someone were to distribute a fork of the app, they would have to create a new name and logo so users can tell the fork apart from the original.

Thus to avoid confusion if you'd like to distribute a version of the project that doesn't match the upstream sources, please invent a new name and logo for it first. Thanks.

building from source

Building Lighthouse from source requires the Maven build tool and the bitcoinj library.

The latest version of bitcoinj should be installed from source:

$ git clone
$ cd bitcoinj
$ mvn clean install

Compile Lighthouse with:

$ git clone
$ cd lighthouse
$ mvn clean package

Run Lighthouse with:

$ java -jar client/target/shaded.jar