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”.
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，详情可参考同城约会
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我在除夕夜当晚，与宇树创始人王兴兴进行了一次独家专访，我们不仅聊到了机器人的技术进步，还有宇树和王兴兴本人，这一年的成长和思考。