What if we redefined the requirements for a valid block to require that each account may receive at most one deposit or one withdraw.
What would happen if someone spams (zero fee) Alice's account at each block with 0.0000000001 STEEM ? When would Alice get the chance to transfer/withdraw her 100 SBD since on every block her account state would be in deposit mode?
RE: How to Process 100M Transfers / Second on a Single Blockchain