In this paper, we give a detailed review and examination of the huge security and assurance issues of bitcoin, the huge challenges, and openings in utilizing the advancement. Regardless, we present a total establishment of Bitcoin and the starter on security. Second, the critical security risks and countermeasures of Bitcoin are investigated. Third, we explore the essential Bitcoin circulated association security risks and Bitcoin storing security. Here in this paper, we endeavored to introduce an examination of huge attacks like pernicious attacks, more conspicuous than 52 percent of attacks, and square maintenance attacks. Bitcoin is covered in banters for giving a protected house to criminal tasks. Additionally, we present a couple of huge open investigation directions to recognize the resulting examinations around here. We present in this paper, a protected insurance preservation contrive reliant upon bilinear coordinating and other cryptographic locals. We exhibited that our proposed contrive is incredible and can be executed to save customers and trade. In the next heading we will discuss about the brief introduction related work and the previous work also and discuss some issue which we found during the review of various papers.