You can confirm the PAN of an individual or firm , if you know the complete name and date of birth. You can also find out the jurisdiction
https://incometaxindiaefiling.gov.in/knowpan/knowpan.jsp
Mar
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Sole proprietorship
While starting a business, you have to choose the form of business and the simplest form of business is a sole proprietorship. However, the legal liability of the proprietorship is unlimited, and personal assets can be attached in case there is a product problem.
Reference: http://business.gov.in/starting_business/sole_proprietorship.php