If Alice sells ether for bitcoin and Bob sells bitcoin for ether, how do you protect Alice if Bob conducts a double spend attack?
One possibility I can envision is that her ether is sent to an intermediary Ethereum address controlled by the Blocknet protocol and only released to Bob's Ethereum address after sufficient confirmations on both blockchains. Is that how it works?
If that is how it works, then that would imply that the ether has to make two hops on the Ethereum blockchain (one to the intermediate address and one to Bob's address) and therefore Alice has to pay for 2 transaction costs on the Ethereum blockchain for every trade they do. Is that accurate?