Block chain is basically an open, distributed, decentralized, publicly available digital ledger containing all the blocks in a chain having a hash-linked data structure where hashing is enabled by public – key cryptography. It is a concept based on which we are having the protocol of Bit coin; the widely known cryptocurrency. This work discusses the implementation of intrusion detection mechanism on Blockchain’s model of information security. The job of the Intrusion detection software or systems typically called IDS is to monitor for the suspicious activity in a network and raise an alarm on discovery of either thus, acting like a firewall. Besides, exploring on implementation the work also shed light on existing details of Blockchain’s principles, applications and security as well as on the existing mechanisms of Intrusion Detection Systems.