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Consent & Information Sharing Work Group (CISWG)

This Work Group operates under the Kantara IPR Option: Patent & Copyright: Reciprocal Royalty Free with Opt-Out to Reasonable And Non discriminatory (RAND)

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titleCurrent Status - Version 1.1 has been published

Title: Consent Receipt Specification (download here)

Version: 1.1.0

Date: 2018-02-20

Editors: Mark Lizar, David Turner

Status: This document is a Kantara Initiative Technical Specification Recommendation produced by the Consent & Information Sharing Work Group, and has been approved by the Group. The Public Comment and Intellectual Property Rights Review has been completed. It has been approved by the Membership of the Kantara Initiative. See the Kantara Initiative Operating Procedures for more information.

Abstract: A Consent Receipt is record of authority granted by a Personally Identifiable Information (PII) Principal to a PII Controller for processing of the Principal's PII. The record of consent is human-readable and can be represented as standard JSON. This specification defines the requirements for the creation of a consent record and the provision of a human-readable receipt. The standard includes requirements for links to existing privacy notices & policies as well as a description of what information has been or will be collected, the purposes for that collection as well as relevant information about how that information will be used or disclosed. This specification is based on current privacy and data protection principles as set out in various data protection laws, regulations and international standards.

Known Implementations

2 - Consent Receipt Implementations - list of implementations of Consent Receipts or derivatives

titleReceipt Specification Enhancement Project

The receipt specification enhancement project is active as of December 2018.

For now, we are managing the list of proposed enhancements as Github issues.

Github Project:

Github Issues list:

titleInteroperable Consent Receipt Demo

Kantara presented a demonstration of Interoperable Consent Receipts at the MyData 2018 conference, Helsinki, August 28, 2018 in the Consent In Action Session there are excellent presentation videos - it's a very interesting conference.

Five Kantara Members who are active Consent & Information Sharing Work Group contributors invested developer time to create external Kantara-spec Consent Receipts. These receipts were stored at a user-specified location, then viewed using a viewer created by OpenConsent. From start to finish, it took about 7 weeks to design, build, test and deliver.

The Consent Receipt presentation was recorded and is posted (YouTube).

And the slides can be downloaded (pptx).

The demo was a hit - lots of conference delegates engaged with the presenters and we are hoping to see that interest result in more WG participants and more demo apps - and hopefully some of these in shipping products!

The demo was then presented at the Kuppinger Cole CIAM World Tour USA, Seattle, September 21, 2018 with similar interest and engagement.

Next stop: Amsterdam for the Kuppinger Cole CIAM World Tour Europe, October 29-31, 2018

After the first two conference presentations, we now have two more solutions to fit into the demo.

This working group has been evolving since 2009, starting out as the Information Sharing WG focused on catalysing a rich flow of consent based personal information - from a CRM perspective - actual demand data (as opposed to predicted demand) can be engineered with better personal data control then could be found in any traditional CRM products and departments. The first work stream was led by Joe Andrieu and Iain Henderson, which produced the Information Sharing Label Notice for people.

In 2012, Open Notice Initiative, (now the Kantara Liaison Partner Open Consent Group), presented a paper Opening up the Online Notice Infrastructure An ‘Open Notice’ Call For Collaboration, at the W3C Do Not Track & Beyond Conference.

The result of this effort was the proposal to Kantara, ISWG to focus on a consent work stream, which resulted in this WG name change to the Consent & Information Sharing WG (CISWG). This work stream has focused on making an identity management usable consent record called the "Consent Receipt", driven largely by major contributions from Mary Hodder, John Wunderlich, Iain Henderson and Mark Lizar who brought the spec to a v.1, with a special thanks to David Turner and extra special effort of Andrew Hughes to bring together the release of V1.1 to be published on May 25, 2018 . This specification is now growing adoption in the EU and US healthcare, consent management, policy frameworks, smart contracts.

Special mention to UMAWG and Eve Maler for providing the shining example for how to develop a specification by consensus and Justin Richer for building the first consent receipt generator

This Workgroup is open for interested participants, the work product that is produced is under a Royalty Free (openly usable) RAND license. The work produced is provided for review by industry, public sector, regulators, other standards organisations like the ISO of  ISO/IEC JTC 1/SC 27/WG 5, and community partners; like Project VRM, who have supported the long term development of tools for individual autonomy over personal information.

Project VRM community also drive a work stream in CISWG with Customer Commons called User Submitted Terms, which is focused on a common set of icons that customers can use to signal their intent.

The WG members often meet at conferences and workshops in the US and EU, which happen annually for those who want to meet in person.

  • May & Oct - IIW Internet Identity Workshop - Mountain View, California
  • May EIC European Identity Conference - Berlin Germany
  • June - Identiverse (Boston 2018)
  • August 29-31 MyData Helsinki


Active Projects:

Publications & Submissions



All WG Projects:

This blog post on the Personal Data Eco-system is useful background and context for this working group.

Download the Consent Receipt Overview



  • Jim Pasquale - Chair
  • John Wunderlich - Vice-Chair
  • Andrew Hughes - Vice-Chair
  • Mark Lizar - Liaison




Call times:

Consent Receipt: Thursdays - 15:30 GMT, 07:30 Pacific, 10:30 Eastern Time

User Submitted Terms: Wednesdays - 16:00 GMT; 08:00 Pacific; 11:00 Eastern

GoToMeeting (GTM1)
Please join the meeting from your computer, tablet or smartphone. 

You can also dial in using your phone. 
United States: +1 (669) 224-3318 

Access Code: 323-930-725 

GoToMeeting (GTM1)
Please join my meeting from your computer, tablet or smartphone.

Please join my meeting from your computer, tablet or smartphone. 

You can also dial in using your phone. 
United States: +1 (669) 224-3318 

Access Code: 323-930-725 

More phone numbers 
Australia: +61 2 9091 7603 
Austria: +43 1 2530 22500 
Belgium: +32 28 93 7002 
Canada: +1 (647) 497-9376 
Denmark: +45 32 72 03 69 
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Ireland: +353 15 360 756 
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New Zealand: +64 9 282 9510 
Norway: +47 21 93 37 37 
Spain: +34 932 75 1230 
Sweden: +46 853 527 818 
Switzerland: +41 225 4599 60 
United Kingdom: +44 330 221 0097 

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