No, trading is done independently of Digix. Future p2p exchange platforms, such as Kyber Network, AirSwap, will allow anyone to trade any Digix tokens / assets on their own accord. Digix functions as a tradtional bullion reseller and provide custodial services for your gold assets. The main difference is that we use blockchain technology to ensure all receipts and documentations pertaining to your gold assets are transparently and permanently uploaded onto IPFS / Ethereum and be kept in your Ethereum Wallet through our Proof of Asset Protocol.