Context Type ID Issuer Issue Date Expiration Date ... Proof: Signature Proof of Correctness Attributes ... Context Type ID Issuer Issue Date Proof: Knowledge of Signature 検証可能な資格証明1 Credential Subject: Given Name Family Name Birth Date ... 検証可能な資格証明2 Credential Subject: University Department Degree Awarded ... プレゼンテーション Presentation Metadata block Context Type ID ... 検証可能な資格証明 派生資格証明1 Credential Subject: ageOver18 派生資格証明2 Credential Subject: degree Proof: Common Link Secret Derived credential information is a subset from the credentials