Blockchain innovation has drawn
consideration as a famous money related innovation that
totally changes the business exchanges because of its
security that suits the information period. It's a
decentralized system that underpins and utilizes a
spread of cryptography models. Blockchain guarantees
security on the possibility of the encryption, verification
of friendsthat share virtual money, and furthermore the
age of hash esteem. An undeniable record of each single
exchange at any point made is contained in blockchain.
This flexible and powerful made sure about exchange is
being incorporated with distributed computing, another
critical registering model. In this paper, we talk about
the idea of blockchain innovation and put forth an
attempt to audit the apparatus of blockchain security in
Keywords : Blockchain; Computer Security; Bitcoin; Authentication; Cloud Computing.