> Instead of having different databases and APIs that are hard to integrate with one another, a blockchain could be the central storage and transactions handler

> Instead of having different databases and APIs that are hard to integrate with one another, a blockchain could be the central storage and transactions handler that different systems interface to. Couldn't this be done with something like an enterprise service bus, without the blockchain? > Booking through a smart contract [...] There's no DB that can be hacked or go corrupt But you have moved the hacking problem to the smart contract instead, and last time I looked those seemed a lot harder to make secure.