The User-Managed Access (UMA) extension to OAuth 2.0 is a promising candidate for increasing Digital Trust in personal data ecosystems like Solid. With minor modifications, it can achieve many requirements regarding usage control and transaction contextualization, even though additional specification is needed to address delegation of control and retraction of usage policies.

翻译：OAuth 2.0的用户管理访问（UMA）扩展是增强Solid等个人数据生态系统中数字信任的有效方案。通过适度修改，该方案能够满足使用控制和交易情境化方面的诸多需求，尽管在控制权委托和使用策略撤销方面仍需进一步规范以完善其技术标准。