🔐Data Privacy and On-Chain Evidence Storage

Core Design

• DID (Decentralized Identity) + SBT (Soul Bound Token)Combined, establish on-chain identity and data credentials for users.

• Sensitive Data Storage Policy：

  • By default, it is only stored on the user's local device, or encrypted and stored in distributed storage (such as IPFS/Filecoin).

  • Only data fingerprints (hashes) and permission controls are retained on the chain.

User autonomy

• Based on the W3C DID standard, users have full control over their identity information and the scope of sharing.

• SBT is used to record achievements and credits without revealing specific health data.

Privacy protection technology

• Zero-knowledge proof: Users can prove to a third party that "health indicators meet standards" without disclosing specific values.

• Application Scenario: For example, in insurance applications, use the "data available but not visible" model to obtain discounts or benefits.

value

• Prevent sensitive data from being leaked.

• Users achieve absolute ownership of their data.

• The platform only serves as an infrastructure and does not store or snoop on privacy without authorization.