Bitcoin Forum

The Dig-VC is essentially a guaranteed interest return on an investment in the exchange. Customers can invest a base sum of money into the exchange and, at the end of a 60 day period, those customers will receive a guaranteed 1.2% return per month. Huobi is able to ensure these returns by backing them through their Digcoin service, a Bitcoin mining platform service. The Chinese exchange added an incentive to their promotion of the Dig-VC in order to stir up more market demand, promising to add an additional 0.02% per month at the end of the 60 days to the first 100 customers.

http://www.coinfinance.com/news/huobis-fixed-return-financial-product-sells-out-fast