1) check whether original chain of title documents are with the seller
2) take 30 years search of the land in question .
3)contact a local lawyer and obtain a certificate that tile is clear and marketable and free from encumbrances
4) dont make any advance payment unless MOU or agreement for sale is entered into with seller
5) as to whether details of land under panchayat can be obtained from BLRO office only local lawyer can guide you