While reading the white paper a doubt emerged about market makers / liquidity providers:
(Inside B&C Exchange protocol/structure) Are ONLY core clients (that download the FULL blockchain) gonna be supported for liquidity providers?
OR
Are Simplified Payment Verification Clients (e.g. Electrum) gonna be supported too?
I'm just an onlooker, but I wouldn't be able to tell why SPV clients wouldn't be accepted.
That might be related to the fact that I don't know how SPV clients work.
Are they capable of multisignature transactions (decode, create)?
The question whether it would be acceptable to trust central servers needs to be answered as well.
The benefit of using SPV clients is that the requirements for the hardware to run a node of a reputed signer is significantly reduced.
This might outweigh the drawbacks partly or in full, because it might allow running such a node in a secure environment and not as virtual server on a cloud server infrastructure that poses threats to the integrity of the private keys.
SPV seems to work badly with PoS coins, but they often have quite small blockchains.