Equity markets have the DTCC and registered exchanges. Even though there are some 16th century pieces of paper still around today, actual transfer of equity fro

Equity markets have the DTCC and registered exchanges. Even though there are some 16th century pieces of paper still around today, actual transfer of equity from one party to another is little more than an exchange notifying the DTCC that a transaction took place, and the DTCC changing a log in its own database moving the stock from one clearing firm to the other. That sounds boatloads more efficient that blockchain already. There are other security markets that do not operate as efficiently, but to me, the solution looks more similar to the DTCC model, not the blockchain model. Keep in mind, too, we still do not have any system that reasonably ties bitcoin technology back to a real-life asset. Bitcoin works because it's self-contained. In the world you described, I could have all the necessary ones and zeros to represent an ownership stake in a Nigerian oil company, but that means diddly squat if it's impossible for me to exert control on the company or receive dividends. Nigeria nationalizing the rigs has nothing to do with whether or not I have a claim on it with a piece of paper from an exchange or a cryptographic key. Those are currently real-world issues impairing investment in those regions, not the exchanging mechanisms. Though I do concede, the exchanging mechanisms aren't perfect.