Design of a data model for the decentralized management of digital educational credentials using blockchain in the framework of open digital badges

This manuscript presents a model for the decentralized management of digital educational credentials using blockchain technology. The proposed model focuses on improving the efficiency and security of the credential issuance and verification process, while guaranteeing the privacy of student data and the parties involved in the process. Through the adoption of a blockchain-based approach, greater transparency and confidence in student achievement and abilities is achieved, thanks to an immutable and verifiable record of credentials. The model is based on a review of the existing literature and stands out for its focus on interoperability, data security and adoption of common standards. Through the use of Decentralized Identifiers (DIDs) and the representation of entities and attributes, a robust and reliable framework is established for the issuance and validation of educational credentials. In conclusion, the implementation of this model has a significant impact in the educational field by facilitating the mobility and validation of students' academic and professional achievements, fosteringtrust and reducing dependence on centralized verification systems