Excellent observation, although I find the venezuelan scheme much more convincing for an investor and for the venezuelan government absolutely riskless, here a description of the proposed Turkcoin:

Details remain scarce as the 22-page draft has not seen a public release but the news report reveals the proposed Turkcoin would resemble asset-backed securities from Turkey’s Wealth Fund that includes large public assets including Turkish Airlines, the Istanbul Stock Exchange, Turk Telekom, the National Lottery and the Ziraat Bank, among others. The politician argued reliance on public assets would bring low risk and volatility to the proposed cryptocurrency with profits higher than those offered by sovereign bond yields.

https://www.ccn.com/turkcoin-turkish-politician-endorses-launching-national-cryptocurrency/