Parity Public License

the free for open software license

The Parity Public License 7.0.0-pre.1

Contributor: [name]

Source Code: [source]


This license lets you use and share this software for free, as long as you contribute software you make with it, other than prototypes.


In order to receive this license, you must agree to its rules. The rules of this license are both obligations under that agreement and conditions to your license. You must not do anything with this software that triggers a rule that you cannot or will not follow.

The contributor licenses you to do everything with this software that would otherwise infringe their copyright in it.


You must ensure that everyone who gets a copy of any part of this software from you, with or without changes, also gets the text of this license and the contributor and source code lines above.


The contributor licenses you to do everything with this software that would otherwise infringe any patent claims they can license or become able to license.


Do not make any legal claim against anyone accusing this software, with or without changes, alone or with other software, of infringing any patent claim.


The contributor cannot revoke this license.


With the exception of prototypes:

  1. Contribute all changes and additions you make to this software

  2. If you combine this software with other software, contribute that software.

  3. Contribute other software you develop, deploy, monitor, or run with this software.

  4. When in doubt, contribute.


You need not contribute prototype changes, additions, or other software that you do not end up using for more than thirty calendar days, sharing outside the development team working on the prototype, or using to provide a service to anyone else.


When this license requires you to contribute:

  1. Publish all source code, in the preferred form for making changes, through a freely accessible distribution system widely used for similar source code, so the contributors and others can find and copy it.

  2. Ensure that each part of that source code is available to the public under a license at least as permissive as this one, such as MIT, two-clause BSD license, Apache 2.0, Charity 3.0.0, or Blue Oak Model 1.0.0.

  3. Take these steps within thirty calendar days of when you first did anything requiring contribution.

Note that this license does not allow you to change the license terms for this software, but only to contribute software covered by Copyleft under qualifying licenses.


You are excused for unknowingly breaking Copyleft if you contribute as required, or stop doing anything requiring this license, within thirty days of learning you broke the rule.

No Liability

As far as the law allows, this software comes as is, without any warranty or condition, and the contributor will not be liable to anyone for any damages related to this software or this license, under any kind of legal claim.