Bitcoin is a popular cryptocurrency that records all transactions in an allotted append-handiest public ledger referred to as a blockchain. The security of Bitcoin heavily relies on the motivation-suitable proof-of-work (PoW) founded dispensed consensus protocol, which is run with the aid of the community nodes known as miners. Because of its inception, blockchain technological know-how has proven promising application possibilities. The spectrum of blockchain functions stages from financial, healthcare, automobile, hazard administration, internet of matters (IoT) to public and social offerings. Several reports focal point on utilizing the blockchain information structure in various applications. These vulnerabilities result in the execution of different security threats to the ordinary functionality of Bitcoin. We then examine the feasibility and robustness of the brand new safety solutions. Moreover, we discuss the current anonymity concerns in Bitcoin and the privateness-related threats to Bitcoin customers together with the evaluation of the comprehensive privacy-keeping solutions.

Ayushi Singh,Gulafsha Shujaat,Isha Singh,Abhishek Tripathi,Divya Thakur."A Survey of Blockchain Technology Security ". International Journal of Computer Engineering In Research Trends (IJCERT) ,ISSN:2349-7084 ,Vol.6, Issue 04,pp.299-303, April - 2019, URL :https://ijcert.org/ems/ijcert_papers/V6I401.pdf,

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