As I understand there's gonna be many single blockchains for all the different parts of the system. This sounds interesting and seems to be a quite innovative approach. But how does this scale? Isn't it difficult enough to handle one chain? I mean from the tech perspective.
That's an excellent question and one that we're really proud of as it is what makes the whole system work. Everything else is just use cases really.
The way it works is that the keys are the same for the account on all of the chains. This makes it relatively easy to keep track of which account is which and allows them all to work together. Each chain will have it's own set of block producers that will work with the users that will decide the specifics of each chain. A chain in the system could even decide to fork into 2 or more chains and so long as the keys remain the same. The basic meat of the system as a whole is essentially a protocol that allows them all to work together. So long as the protocol is followed then new chains could be created for virtually any use case and it would work the same.