The conceptual backbone behind the stock market itself hasn’t changed much. In fact, the model we use today for settling trades and ensuring proper share ownership is still based on the one initially created in the 17th Century.
Today’s infographic envisions what a decentralized securities platform could look like.
In such a paradigm, the settlement of trades would not occur through centralized transfer agents, but instead through a blockchain with this feature “built in”.
Source: http://www.visualcapitalist.com/blockchain-backbone-stock-market/