検証可能なクレデンシャル（Verifiable Credentials）
プライバシーに配慮したデジタル証明書。
VCs are a core component of Decentralized Identity (DID). Built on the 'Trust Triangle' model (Issuer, Holder, Verifier), they enable a privacy-first way to share sensitive information. VCs contain cryptographic proofs allowing instant confirmation of authenticity without central databases.
graph LR
Center["検証可能なクレデンシャル（Verifiable Credentials）"]:::main
Pre_decentralized_identity["decentralized-identity"]:::pre --> Center
click Pre_decentralized_identity "/terms/decentralized-identity"
Pre_asymmetric_encryption["asymmetric-encryption"]:::pre --> Center
click Pre_asymmetric_encryption "/terms/asymmetric-encryption"
Rel_zero_knowledge_proof["zero-knowledge-proof"]:::related -.-> Center
click Rel_zero_knowledge_proof "/terms/zero-knowledge-proof"
Rel_identity_and_access_management_iam["identity-and-access-management-iam"]:::related -.-> Center
click Rel_identity_and_access_management_iam "/terms/identity-and-access-management-iam"
Rel_attestation["attestation"]:::related -.-> Center
click Rel_attestation "/terms/attestation"
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classDef pre fill:#0f172a,stroke:#3b82f6,color:#94a3b8,rx:5,ry:5;
classDef child fill:#0f172a,stroke:#10b981,color:#94a3b8,rx:5,ry:5;
classDef related fill:#0f172a,stroke:#8b5cf6,stroke-dasharray: 5 5,color:#94a3b8,rx:5,ry:5;
linkStyle default stroke:#4b5563,stroke-width:2px;
🧒 5歳でもわかるように説明
スマホに入っているデジタルな「運転免許証」や「卒業証書」のようなものです。相手に全ての個人情報を見せる必要はありません。「18歳以上であること」だけを証明する情報を送り、相手はそれが本物であることを暗号の力で一瞬で確認できます。
🤓 Expert Deep Dive
The W3C VC Data Model defines Claims, Metadata, and Proofs. Modern VCs utilize Selective Disclosure (BBS+ or SD-JWT) for Predicate Proofs. Status/Revocation is managed via decentralized bitstrings/status lists.