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）扩展是提升Solid等个人数据生态系统中数字信任度的潜力方案。通过适度调整，该方案能够满足使用控制与交易情境化方面的多项需求，尽管在控制权委托和使用策略撤销方面仍需进一步的规范完善。