Purchasing and selling engraved seals on online shopping platforms involves an illegal act. According to Article 341 of the Criminal Law of the People's Republic of China, the illegal production and sale of seals for illegal purposes is an illegal and criminal act. At the same time, Article 59 of the "Public Security Administration Punishment Law of the People's Republic of China" also clearly stipulates the illegal behavior of engraving and selling illegal seals, and those who violate the provisions of this law will be subject to administrative penalties.

Taobao is an online shopping platform, and seal-engraved transactions through the platform are violations of relevant laws and regulations. As a consumer, purchasing and using illegal seals may expose you to legal risks and financial losses.

So, as for the official seal you mentioned on Taobao that has not been discovered for 2 years, I suggest that you stop using the illegal seal immediately and consult relevant legal professionals as soon as possible to learn how to solve this problem. At the same time, we should establish a correct awareness of the rule of law, abide by laws and regulations, stay away from illegal transactions, and maintain social order and good customs.