Security and Audit Framework

To ensure the project’s security and trustworthiness, XIIID implements a multilayered security and audit framework.

Smart Contract Security All XIIID smart contracts undergo the following rigorous security processes before deployment:

• Industry-Standard Audit Process: Collaborates with professional blockchain security audit firms to thoroughly verify smart contract code for vulnerabilities.

• Phased Audit Approach:

  • Automated vulnerability scanning

  • Expert manual code review

  • Formal verification

  • Penetration testing

• Transparent Disclosure: All audit results are fully disclosed on the XIIID official website and GitHub repository, including identified vulnerabilities, remediation details, and follow-up verification outcomes.

Data Security and Privacy XIIID implements robust data security and privacy protection mechanisms tailored to the sensitivity of educational data:

• Hybrid Data Storage Model: Sensitive learner personal and educational data is encrypted and stored off-chain, with only hashes and metadata required for access control and verification recorded on the blockchain.

• Zero-Knowledge Proofs: Enables learners to prove learning achievements or qualifications without disclosing personal data.

• Consent-Based Data Sharing: Learners can granularly control who accesses their educational data and for what purpose, with all access and usage logged on the blockchain.

This comprehensive security and audit framework is a cornerstone of building trust in the XIIID platform and ensuring the secure management of user data.