title,doi,url,abstract,journal,publication_year,pmid,arxiv Case Study on Block Chain for Current Era, https://doi.org/10.32628/IJSRCSEIT, https://ijsrcseit.com/CSEIT194710, In the current era blockchain is new technology used to record transaction between two parties. It is a public ledger in which everyone is able to have access without central authority having control. This technology is very much essential for the finance sector banking sector government sector. In our research we have focused on the applications of the block chain what all are the major technology used in the bockchain and comparative study on the various technology used in blockchain. The blockchain technology is 30% used in banking and finance sector13% for government and public goods8% for media and music., International Journal of Scientific Research in Computer Science Engineering and Information Technology, 2019, CSEIT194710