Predictions of a collapse of a speculative bubble in cryptocurrencies have been made by numerous experts in economics and financial markets. Bitcoin and other cryptocurrencies have been identified as speculative By September , the MVIS CryptoCompare Digital Assets 10 Index had lost 80 percent of its value. Ethereum ETH ETH. View All Coins · BTC Forum. Share; Tweet; Share on Our featured lists can help you easily navigate the crypto world. Exchanges; Mining; Gambling; Wallets.