# Licence App Identity for Elixir is copyright © 2022 Kinetic Commerce and contributors and is licensed under [Apache Licence, version 2.0][apache-licence-20]. ## Developer Certificate of Origin All contributors **must** certify they are able and willing to provide their contributions under the terms of this project's licenses with the certification of the [Developer Certificate of Origin (Version 1.1)][dco]. Such certification is provided by ensuring that the following line must be included as the last line of a commit message for every commit contributed: Signed-off-by: FirstName LastName The `Signed-off-by` line can be automatically added by git with the `-s` or `--signoff` option on `git commit`: ```sh git commit --signoff ``` [apache-licence-20]: licences/APACHE-2.0.txt [dco]: licences/dco.txt