Similar to what happened with voice communication, the financial infrastructure will suffer an inversion[1], the banking platforms will run on top of a global value-transfer protocol,  instead of the other way around. What you describe at the end of your comment already exists, bitcoin exchanges are using a federated bitcoin sidechain[2] to transfer funds between themselves within their own consensus rules (they could implement reversals or any other feature without having to break the bitcoin consensus).<p>[1] <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=pKs5JSh3z7A" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=pKs5JSh3z7A</a><p>[2] <a href="https:&#x2F;&#x2F;blockstream.com&#x2F;2015&#x2F;10&#x2F;12&#x2F;introducing-liquid&#x2F;" rel="nofollow">https:&#x2F;&#x2F;blockstream.com&#x2F;2015&#x2F;10&#x2F;12&#x2F;introducing-liquid&#x2F;</a>