The Citizen Wallet

2019冠状病毒病危机加速了将某些技术纳入主流使用的需求。其中一项技术是可验证的凭证。可验证的凭证是数字签名的证书，可以在个人和互联网上简单快速地验证。可能部署的例子包括优先考虑老年人或弱势群体使用在线超市送货时段或认证医疗测试结果，以允许人们从事专业医疗工作或利用航空旅行。W3C最近发布了这些证书格式的标准，以鼓励证书颁发者，持有者和验证者的互操作生态系统。该项目的愿景是实现一个框架，允许使用这一新标准，但也连接到现有的身份技术，使其使用可以快速扩展。其目标是创建一个环境，可以使用Web和移动的技术轻松颁发和检查凭据。它应该在地方和全球层面都可用。例如，地方当局可以发放凭证，当地福利服务提供商可以读取这些凭证，以帮助确定优先级，而国家政府可以将其用于旅行许可。该环境将包括一个许可的分布式凭证分类账，这将有助于凭证的发放，持有，断言和验证。该环境将以W3C格式和X.509格式维护凭证，以允许桥接到现有的身份环境。分布式账本不会使用通常与该技术相关的昂贵的工作量证明算法，因此不会产生相关的负面环境影响。主要关注的领域将是创建一个系统，可用于使用新的W3C标准存储和部署可验证的凭据。这将与使用相同标准的其他系统进行互操作，并将成为生态系统的一部分，该生态系统将允许医疗测试结果，关键工作人员状态或已验证的漏洞状态等凭据在物理和在线环境中广泛使用。

The Covid 19 Crisis has accelerated the need for certain technologies to be brought into mainstream use. One of those technologies is verifiable credentials. Verifiable credentials are digitally signed certificates that can be verified simply and quickly both in person and over the internet. Examples of possible deployment include prioritising older or vulnerable people's use of online supermarket delivery slots or certifying medical tests results to allow people to work in specialist medical roles or make use of air travel. This would be operated on the basis of a digital certificate issued by one or more trusted authorities.W3C recently released standards for the format of these certificates to encourage an interoperating eco system of credentials issuers, holders and verifiers. The vision for this project is to implement a framework that allows this new standard to be used but also connects to existing identity technology so that its use can be quickly scaled.The aim will be to create an environment where credentials can be easily issued and checked using web and mobile technologies. It should be usable at both a local and global level. For example a local authority would be able to issue credentials which can be read by a local welfare service provider to assist prioritisation, while a national government may use it for travel permissions.The environment will include a permissioned distributed ledger of credentials that will facilitate the issuing, holding, asserting and verification of the credentials. The environment will maintain credentials in W3C format and in X.509 format to allow bridging to existing identity environments. The distributed ledger will not use costly proof-of-work algorithms typically associated with this technology, and therefore not have the associated negative environmental impact.The main area of focus will be to create a system that can be used to store and deploy verifiable credentials using the new W3C standard. This will be interoperable with other systems using the same standard and will be part of an ecosystem that will allow credentials such as medical test results, key worker status or verified vulnerability status to be widely used in both physical and online environments.