Exchange risk

Digital gold currency is a form of representative money as it directly represents gold metal on deposit or in custody[2], and denominated in units of mass (grams or troy ounces). Just as the exchange rates of national currencies fluctuate against each other, the exchange rates of DGCs fluctuate against national currencies, which is reflected by the price of gold in a particular currency. This creates exchange risk for any account holder, in the same way one would experience exchange risk by holding a bank account in a foreign currency.
Some DGC holders make use of the digital currency for daily monetary transactions, even though most of their normal income and expenses are denominated in the national currency of their home country. Fluctuations in the value of gold against their national currency can create some confusion and difficulty for new users as they see the "value" of their DGC account fluctuate in terms of their native currency.
In contrast to exchange risk, caused by gold's fluctuation against national currency, the purchasing power of gold (and therefore DGCs) is measured by its fluctuation against other commodities, goods and services. Since gold has historically been the refuge of choice in times of inflation or economic hardship, the purchasing power of gold becomes stronger during times of negative sentiment in the markets[3]. Due to this speculative interference, there are times when purchasing power has also declined. In 2007-2008, gold volatility has closely tracked the recent run-up in oil prices