
Kostiantyn worked on the affinidi/affinidi-tdk repository, delivering a browser-based credential issuance flow that transitions issuance from DIDComm messaging to an in-browser UI, improving user experience and enabling third-party integrations. He enhanced the VDIP protocol by adding a new request service message and strengthened integration tests for more reliable credential verification. Using Dart and JavaScript, Kostiantyn implemented holder token validation to enforce nonce and thread ID checks, increasing security in issuance flows. He also updated dependencies and analysis options, aligning the codebase with newer protocol versions and improving maintainability. The work demonstrated depth in backend and security validation.
November 2025 (2025-11) focused on delivering a richer, more secure credential issuance experience and strengthening the foundation for third-party integrations in affinidi/affinidi-tdk. Key items include moving credential issuance to an in-browser UI via the Browser-based Credential Issuance Flow, enabling a smoother UX and browser-based integrations. VDIP protocol enhancements and more robust tests were implemented to improve interoperability and issuance verification. Holder token validation was added to ensure tokens match expected nonce and thread IDs, increasing security of issuance flows. Code quality improvements and dependency updates stabilized the codebase, aligned with newer VDSP/VDIP versions, and simplified maintenance. Test reliability and CI coverage for VDIP integration tests were improved, reducing flakiness and accelerating validation cycles.
November 2025 (2025-11) focused on delivering a richer, more secure credential issuance experience and strengthening the foundation for third-party integrations in affinidi/affinidi-tdk. Key items include moving credential issuance to an in-browser UI via the Browser-based Credential Issuance Flow, enabling a smoother UX and browser-based integrations. VDIP protocol enhancements and more robust tests were implemented to improve interoperability and issuance verification. Holder token validation was added to ensure tokens match expected nonce and thread IDs, increasing security of issuance flows. Code quality improvements and dependency updates stabilized the codebase, aligned with newer VDSP/VDIP versions, and simplified maintenance. Test reliability and CI coverage for VDIP integration tests were improved, reducing flakiness and accelerating validation cycles.

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