service to make output events for given addresses in AC automata like processor in-time with chain
period 1: ethereum support based on claws
period 2: erc20 tokens support
period 3: btc support
reorganize head may tend to be a tough task , but we still believe that txs in side chain is is still usable when main chain reached them , you can set a bigger confirm gap to make sure that side effect in side chain may not reached the confirm event to you, there's much of tricks there.