Securing Land Registry System Using Blockchain

The current land registration process has many flaws that people use to cheat the public and governments. This section explains By implementing the land registry on the blockchain, the security problem will be solved to a large extent. The hash value calculated for each block is unique because it is linked to the hash of the previous block. The algorithm used for hashing is SHA256. Along with SHA256, a Proof of Work (PoW) algorithm is also used to make the information about each transaction more secure. The message digest generated per block is of fixed size, and each hash represents the complete set of transactions within a particular block. The proposed land registry blockchain network consists of 12 nodes that compute proof of work. Nodes are responsible for validating transactions, mining new blocks, and adding new blocks to the blockchain. A total of 200 real estate transactions are recorded using blockchain techniques to provide tamper-proof and updated versions of land registers. An elliptic curve cryptography algorithm is used to generate the signature and is used to verify whether the transaction was signed by the owner. Merkle trees are used to link transactions using hashes, reducing disk usage. Therefore, the proposed implementation of land registry using blockchain involves 99 effort to record.