||As the widespread of Internet, there are various types of digital content industries that have been prosperously booming, for example, online game industry has attracted a lot of players and brought with it a great business opportunity. The trading volume of virtual properties has multiplied quickly, but serious problems have come up as well. In this paper, we will take online-game virtual property trading as an example to study the transaction process of virtual properties. The drawbacks hidden in the transaction, which could endanger the rights and interests of participating parties, will be raised up. We proposed five virtual property transaction protocols concerning registration, selling, buying, confirmation, and authentication, to address these problems.
To uniformly describe virtual properties and their related exchange process, we proposed a Virtual Property Description Language (VPDL) which is based on XML (eXtended Markup Language). Interpenetrating the five aforementioned protocols, identity of virtual property incorporating with digital signature is used to strengthen the security of virtual property transactions. The protocols allow participating parties to control necessary information such as trading details, object descriptions, and legal source of the traded objects. The system we developed helps to manage related transaction history, enhance transaction security, and reduce problems arisen from trading disputes. It makes the transaction process more integrated so as to enhance the circulation of the virtual properties. It could also serve as a virtual property transaction platform for online game companies to offer their services. Exchange of other kinds of virtual properties can benefit from the design concept of this system. In this way, the transaction order of virtual properties can be better maintained and many crimes and disputes can be avoided.