Reducing stock market settlement days using blockchain

The current Indian stock market structure is fully centralized, with each party's government, financial institutions, and private sector relying on one another to authenticate transactions. Because of the prior party's reliance, the settlement in client Demat accounts takes T + 2. Most of the time, the T + 2 rule causes retail short-term investors or traders to lose money or fail to make a profit. The current settlement method is extremely difficult to comprehend, resulting in anomalies in customer Demat accounts. Blockchain is an immutable append-only data chain that is always developing. The SHA-256 cryptographic technique prevents data from being removed or changed after it has been inserted. There is no central database to maintain the chain; instead, each node stores a copy and processes data locally, updating it in milliseconds. In the form of fresh blocks, new information is added to the chain, ensuring that all parties have the same picture of the blockchain at all times. Everyone has access to the information, so they may verify and confirm transactions, in the end, resulting in complete transparency for all transactions. This work proposes a decentralized stock exchange architecture based on permissioned blockchain to address the T + 2 settlement cycle rule problem. Before designing this architecture it considers every aspect so, it excludes the traditional party name custodian member party because of its traditional functionality so that our architecture becomes cost-efficient at the time of implementation.