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w3c-vcdm-privacy-minimization

Guide issuers and verifiers on data minimization and selective disclosure for W3C Verifiable Credentials.

Updated Mar 7, 2026
Search Tags:#privacy#data minimization#verifiable credentials#selective disclosure#W3C VCDM#bearer credentials
One-click install
npx skills add https://github.com/sourcelabbg/eudi-knowledge --skill w3c-vcdm-privacy-minimization
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: w3c-vcdm-privacy-minimization
Source: https://github.com/sourcelabbg/eudi-knowledge/tree/main/.ai/skills/w3c-vcdm-privacy-minimization
Command: npx skills add https://github.com/sourcelabbg/eudi-knowledge --skill w3c-vcdm-privacy-minimization

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill addresses the challenge of protecting user privacy when working with Verifiable Credentials (VCs) by implementing data minimization and selective disclosure principles.

Core Features & Use Cases

  • Data Minimization Guidance: Provides strategies for issuers and verifiers to limit the amount of Personally Identifiable Information (PII) shared.
  • Selective Disclosure: Explains how to enable holders to share only necessary claims from a VC.
  • Bearer Credentials: Details the concept and implementation of bearer credentials for enhanced privacy.
  • Correlation Prevention: Offers insights into avoiding privacy violations during the validation process.
  • Use Case: An issuer wants to issue a verifiable credential for age verification without revealing the user's exact birthdate. This skill guides the issuer on using abstract claims like ageOver to meet the verifier's needs while protecting the holder's sensitive data.

Quick Start

Explain how to use bearer credentials to protect user privacy when issuing verifiable credentials.

Frequently Asked Questions about w3c-vcdm-privacy-minimization

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement data minimization for W3C Verifiable Credentials?▼

Selective disclosure enables holders to share only necessary claims from a VC, directly limiting the amount of Personally Identifiable Information (PII) exposed to verifiers during the validation process.

What are bearer credentials in W3C VCDM and when should I use them?▼

Preventing correlation during VC validation involves applying selective disclosure patterns and bearer credentials to ensure verifiers cannot track users across multiple credential exchanges by minimizing shared PII.

How do I issue a verifiable credential for age verification without revealing the exact birthdate?▼

Privacy tradeoffs in VC exchange involve balancing the verifier's need for proof against the holder's PII exposure, mitigated by applying data minimization patterns and selective disclosure best practices.

What are the best practices for verifiers to limit PII exposure in W3C VCDM?▼

Best practices for verifiers to limit PII exposure include requesting abstract claims instead of specific data points and accepting bearer credentials to prevent correlation during the validation process.

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