If you ask about what Blocktrades will do at the 2nd layer, then no, it's not a new blockchain, it will be something that will allow the creation of Hive lite accounts at the 2nd layer with their own set of keys (among other things, probably), for example, via social media accounts. We already could have something like that via Inleo, but it is restricted to Inleo's infrastructure, as far as I know.