They were, you know, always there.
Remains user-friendly for all user types.
，更多细节参见51吃瓜
To “show” the credential to some Resource, the user simply needs to hand over the pair (SN, signature). Assuming the Resource knows the public key (PK) of the issuer, it can simply verify that (1) the signature is valid on SN, and (2) nobody has every used that value SN in some previous credential “show”.，这一点在服务器推荐中也有详细论述
第二十三条 居民委员会成员丧失行为能力或者被判处刑罚的，其职务自行终止。。关于这个话题，体育直播提供了深入分析