Sometimes we want to do prove more interesting things with a digital credential. For example, imagine that I want to join a cryptocurrency exchange that needs more complicated assurances about my identity. For example: it might require that I’m a US resident, but not a resident of New York State (which has its own regulations.) The site might also demand that I’m over the age of 25. (I am literally making these requirements up as I go.) I could satisfy the website on all these fronts using the digitally-signed driver’s license issued by my state’s DMV. This is a real thing! It consists of a signed and structured document full of all sorts of useful information: my home address, state of issue, eye color, birthplace, height, weight, hair color and gender. In this world, the non-anonymous solution is easy: I just hand over my digitally-signed license and the website verifies the properties it needs in the various fields.
元宵佳节，明月宛如玉镜高悬夜空，皎洁的月之清辉倾洒大地。在人间，则上演着观灯彩、猜灯谜、放焰火、舞龙灯等各种活动。上元节的夜晚，天上的月相为“望”，北斗七星的斗柄东指，预示“天下皆春”。天、地、人、事、物构成彼此阐释、情感交织的时空节点。这正是中国节令的真谛：“仰以稽诸天时，俯以验之人事”，在“时之运于天”和“时之系于人”之间，一种顺应节令、与自然和谐共生的纽带延伸在天地之间。
。同城约会对此有专业解读
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