European digital identity initiatives are grounded in regulatory frameworks designed to ensure interoperability and robust, harmonized security standards. The evolution of these frameworks culminates in eIDAS 2.0, whose origins trace back to the Electronic Signatures Directive 1999/93/EC, the first EU-wide legal foundation for the use of electronic signatures in cross-border electronic transactions. As technological capabilities advanced, the initial eIDAS 1.0 framework was increasingly criticized for its limitations and lack of comprehensiveness. Emerging decentralized approaches further exposed these shortcomings and introduced the possibility of integrating innovative identity paradigms, such as Self-Sovereign Identity (SSI) models. In this article, we contribute to the ongoing legal and policy debate on the European Digital Identity Framework by analyzing key provisions of eIDAS 2.0 and its accompanying recitals, drawing on a systematic literature review guided by defined Research Questions (RQ). This work employs a structured methodological approach that combines descriptive and comparative analysis, systematic gap analysis supported by a defined scoring matrix, and normative analysis to evaluate the compatibility of SSI properties with eIDAS 2.0 regulation, as operationalized via its Architecture and Reference Framework (ARF). Furthermore, we assess the ARF's guidelines and examine the extent to which it aligns with SSI. The analysis adopts a complementary perspective demonstrating how the regulation can be further developed to better support SSI in the future by identifying existing limitations and potential adoption opportunities within the current legal foundations of the framework.

翻译：欧洲数字身份倡议基于旨在确保互操作性和统一安全标准的监管框架。这些框架的演进最终形成了eIDAS 2.0法规，其起源可追溯至1999/93/EC电子签名指令——这是欧盟首个为跨境电子交易中电子签名使用提供的法律基础。随着技术能力的发展，最初的eIDAS 1.0框架因其局限性及全面性不足而日益受到批评。新兴的去中心化方法进一步暴露了这些缺陷，并引入了整合创新身份范式（如自我主权身份模型）的可能性。本文通过系统文献综述（基于预设研究问题）分析eIDAS 2.0的关键条款及其相关序言，为欧洲数字身份框架持续的法律与政策讨论做出贡献。本研究采用结构化方法论路径，结合描述性分析与比较分析、基于定义评分矩阵的系统性差距分析，以及规范性分析，以评估SSI属性与eIDAS 2.0法规（通过其架构与参考框架实现）的兼容性。此外，我们评估了ARF指南，并检验其与SSI的一致性程度。该分析采用互补视角，通过识别现有法律基础中的局限性及潜在采纳机会，论证了如何进一步发展该法规以在未来更好地支持SSI。