The operator maintains the states, accounts and so on.
It is important to note that the operator cannot get away with the money placed on the block chain. Its slow operations are managed by the ethereum blockchains and the operator has to abide by those.
At regular intervals (25 seconds for tests, 2 hours for real operations) the operator submits the hash of the states to the ethereum blockchain.
The state update is used as reference for the operation that have been done.
The operator maintains the states, accounts and so on. It is important to note that the operator cannot get away with the money placed on the block chain. Its slow operations are managed by the ethereum blockchains and the operator has to abide by those. At regular intervals (25 seconds for tests, 2 hours for real operations) the operator submits the hash of the states to the ethereum blockchain. The state update is used as reference for the operation that have been done.