Worked on the diggsweden/eudiw-wallet-issuer-poc repository to implement compliance with OID4VCI Draft 15, focusing on aligning the wallet issuer proof-of-concept with the latest industry standards. Updated the credential configuration structure and adjusted the use of openid-federation-metadata to reflect new specification requirements. Renamed the credential format from vc+sd-jwt to dc+sd-jwt, ensuring consistency with evolving standards. All changes were delivered in a single, well-documented commit, emphasizing clarity and maintainability. Utilized Java for API development and standards compliance, with a focus on interoperability with partner services. No major bugs were addressed during this period, reflecting stable code quality.