Those that are backed by a valuable asset. Valuable assets such as gold and silver.
Here is a list of gold gold-backed cryptocurrencies: A guide to gold-backed cryptocurrency
Here is a proof that ‘backing’ by a valuable asset is crucial for the long-term success of any cryptocurrency: India – Maya Preferred 223 proves Bitcoin is now backed with real Gold and Silver assets
I have a little investment in gold-backed KBC and KCB coins.
Learn about KCB here: About KaratCoin Bank coin (KCB). Gold-backed. Blockchain-based.
To buy KCB coin read this article: 2 ways to buy KCB coin this August
Click here to see how to buy KBC coin: 2 ways to buy KCB coin this August