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Notice & Consent for people relies on clear communication. 

Decentralized identity relies on legal semantics to express technical semantics that instruct the scope of technical semantics.  Legal semantics for data control (that people can see and expect in person) are mirrored to provide data governance that people expect .  Data with the use of identifiers  and claims online.   Identity and traditionally data governance referring explicitly to control the transborder use of personal information and personal identifiers.As there are no standardized legal semantics for Digital identity and personal Transborder data management presents a challenge.  This work aims to develop a Unified Notice Control Language, that utilizes the OCA and the W3C  Data Control Vocabulary ( mapped legal ontology) to harmonize decentralized legal semantics, utilizing the  International Kantara Notice & Consent Receipt specifications (now in WD2 ISO 27560) and ISO 27984. Online Privacy Notice and Consent standard. flow of data in between domains and borders.

Specification work Proposed for to extend international Decentralized Semantic Governance for the DDE. 

  • Privacy Controller Credential 
  • Unified Notice Control Language for People
  • Conformity Assessment
    • People, Orgs, Regulator Transparency for DDE

Notice & Consent Task Force 

Project owner:

Mark Lizar Salvatore D'Agostino

Team members:

Ken Adler




Decentralized Data Governance for Data subject’s (data) rights.  For people to find technology trustworthy, and to be able to use digital identity to control perosonal data in a way we trust, people need transparency over the security and privacy of the use of their identity and personal data after it is provided.  They need to be able to see the privacy and security risks. In fact as a parent, this is legally required, in order to consent for them collection, use and surveillance of children's data and identifiers. 

The lack of standardized legal semantics for Digital identity and personal (Transborder) data management presents a challenge for identity management technologies and protocols.  This task force mission is to extend international identity governance standards to the SSI space with this specification for a privacy controller credential and the Unified Notice Control Language.

Decentralized Semantic Governance Stack

The Identity and Data Governance Stack of Specifications used to create this specification are designed to utilize OCA to overlay legal notice and consent schema's on to the existing ISO/IEC 29100 framework for jurisdictional privacy/surveillance notice profiles.

Then to enable identity governance interoperability by translating a local governance schema to the internationalized schema base for governance controls and privacy rights.  Then, to overly the next schema for localized identity and data governance controls, which utilized the same surveillance and privacy semantic governance framework for identity and data control interoperability.  

In this process the OCA utilizes this  stack of standards and specifications to syncratically harmonize purpose driven interoperability for meta-data and identity governance (by extending International standards)

The Stack

  1. The use of international standards framework for security, privacy and identity management  is critical for interoperability of data and identity controls internationally.
  2.  management of data  decentralized identifiers, VC's and the ISO 27710 series,Security Techniques - Information Security Management Systems -
    1. ISO/ IEC 29100 Security Techniques - Privacy Framework  (for identifier governance) 
    2. ISO/IEC 29184 Online Privacy Notice & Consent
    3. ISO/IEC 27560 Consent Record Structure (Kantara Notice & Consent Receipt specifications) 
      1. Decentralized Proof of Notice for orgs 
      2. Decentralized Proof of Processing (aka consent) for people
  3. W3C  Data Control Vocabulary ( maps  legal semantics to ontology) to harmonize decentralized legal semantics with machine readable semantics for linking identifiers and personal data. 
  4. Privacy By Design an Default
    1. Used for high assurance, harmonized semantics


  1. A key challenge, which is addressed with an International standards, is the lack of semantic harmonization for personal data control  which provides security for the portability and control of private information and is a required for people to be able to independently consent and control personal information.  This challenge, which was originally championed by  the Open Notice Initiative's Presentation and Paper @ the W3C DoNotTrack Conference in Berkeley California. 'Opening Up the Online Infrastructure' called for collaboration on the semantic standards to be developed. Ultimately realizing that intention data governance standards were needed, and international data governance policy was required to govern between jurisdictions, technical domains, and identity management systems.  It was also abundantly clear, the only legal, and human centric framework for this Internationally, is Notice & Consent.  Notice and Consent, after an exhaustive research campaign, Notice, and semantics are the only consistent legal, technical and socially required component, for all contexts dealing with personal information. 
  2.  This turned into a Kantara Specification effort in 2014 and now, last year, ISO voted to fast track this to a standard 27560, to be used with ISO 29184 to address what was know by the  phrased of the Biggest Lie on the Internet, was a focus of a movie Terms and Condition's May Apply. With an international governance rule set, people can use independently of Terms and Conditions. 
  3. With the success of this work as an international standard this Task Force aims to collaborate to support an International data governance authority framework as an open resource for master data control transparency over personal information (with standardized notice).

Specification Outline

  1. Overview of (OPN) Data Governance Authority Architecture:
    1. Intro
      1. This data governance authority architecture provides the international legal roles for  
    2. Identity & Data Governance Legally Specified Actors /Stakeholders
      1. Policy Controller, Privacy (Data) Controller, Registration Operator Governance Authority, DGA - Registrar 
    3. Privacy Risk Assurance Levels 1-4
      1. Policy Controller, Privacy Controller, Data/Identity Governance Authority Operator (DGAO)
        1. Controller: Tier  0 Risk Assurance - Not Registered 
        2. Policy Controller ( or just Controller) - Tier 1 Assurance - Self Asserted Binding  -No Privacy Risk Assurance - Discoverable
        3. Privacy Controller (or  Data Controller) - Tier 2 Assurance - Signed Binding for Legal Compliance - Mitigated Risk Assurance
        4. Data Governance Authority Operator - Tier 3 - Assurance - High Risk Assurance 
        5. Registrar - Tier 4 - Registrar Infrastructure - 
          1. Low Risk Personal Data Processing - 
            1. only personal information of Controller, and Company Operators
  2. Privacy Controller Credential Specification
    1. Overview:  a Privacy Controller Credential is comprised of a bound relationship identifiers for accountability and transparency: This enables data supply chain transparency
      1. Accountable Person + Legal Entity Identifier
        1. Legal Status of Accountable person and Legal Entity 
        2. Wether the Accountable person is employed by Legal Entity, or 3rd Party 
          1. if 3rd Party - Privacy Controller Credential of 3rd party is required
      2. Conditions of access and use:
        1. the accountable person info should be masked unless required (not published as is required in some jurisdictions) 
  3. Use Case(s) 
    1. Digital Immunisation Passport
    2. Legal Justifications for processing
      1. Surveillance of identifiers  
      2. Holder, Verifier & Issuer 

Unified Notice Control Language for Semantic Harmonization 


Uses the definitions and terms specified in the ISO 29100 framework, Consent Receipt v1.2, for specifying key roles for data control, transparency and accountability.  This international framework is the basis for extending semantic data governance to decentralized data economy.  In this economy, the Privacy Controller Credential extended the Privacy Controller Public Profile for verified claims, decentralized identifiers, and Self Soverign applications.  For this purpose, this specification is used to provide the best practices for the data controller to generate a verifiable credential, the considerations in using this as a  legal credential for standardized data processing.  


  • refers to trustworthy transparency 
    • e.g does this organization use of standardized legal semantics for notice and consent to ease understanding

Requirements Privacy Controller Credential Specification (in Open Consent Groups' OPN Architecture)

Providence  chain starts with the person who is accountable bound to a legal entity. 


  • Accountable Person Role
    • to identify the accountable person / role that is bound to the legal entity identifier (aka) organization. 
      • could be an employee
      • owner / director / officer 
      • data proaction officer 
      • 3rd. Party Company Representative 
        • accountable role - (for another 3rd Party) acting representative 
  • Privacy Controller 
    • under what authority 
    • under what legal justification 

ISO 29100 Privacy Stakeholders

Privacy Stakeholders

ISO Definition

Regulator / 

PII Principal

PII Controller

PII Processor

3rd Party




PII Principal

PII Controller

PII Processor

3rd Party


References for use for creating a Unified (generic) Data Control Vocabulary for OCA




Resource Status

ISO 29100

Information technology — Security techniques — Privacy framework

ISO/IEC 29100:2011 provides a privacy framework which

  • specifies a common privacy terminology;
  • defines the actors and their roles in processing personally identifiable information (PII);
  • describes privacy safeguarding considerations; and
  • provides references to known privacy principles for information technology.
Status - Is publicly available -
ISO/IEC 29184:2020Online privacy notice and consent
(just published - not available to public - we are working on publishing a report/appendix for use with this group )
W3C DPV  0.01Data Privacy Vocabulary
  • legal ontology for technically breaking down and mapping legal ontology to a data legal ontology - 
  • the Notice +  CR V1.2 and W3C DPV, also use a common set of purpose categories. and the Kantara CR v1.1 for purpose specification
  • (note shared by initial FIHR approach - now much more evolved) 

Topic List

Topic Title 


Mapping Governance Matching with ToiP Governance 


Reference Implementations


Human Colossus 



OPN: Open Notice  (+ Consent) Receipt Schema: Starters Guide to Unified Data Control Schema

Lizar, M. & Pandit, H.J., OPN: Open Notice Receipt Schema, 14th International Conference on Semantic Systems (SEMANTiCS 2019), Karlsruhe, Germany, 2019 [Published [accessed July 1, 2020]