QC (QuickCash, Fast Money), a Stablecoin issued based on the quantum chain smart contract, is a blockchain project initiated by Quickcash Network Pte. Ltd. The value of QC Stablecoin is 0.15 US dollars (≈ 1 RMB), which is initially locked. Users can mortgage digital assets to circulate a part of QC. The digital assets mortgaged are mainstream digital assets such as BTC, ETH, EOS, LTC, and QTUM, and the mortgage ratio is more than 150%. That is, the circulated QC Stablecoin is the mortgage credit guarantee for excess digital assets. All pledge and circulation records are publicly displayed on the blockchain, effectively preventing excess QC from entering the circulation market, so as to ensure the exchange rate stability and free circulation of QC....