These dead and dying cryptocurrencies are still worth millions According to CoinCodeCap, more than 640 cryptocurrencies failed to publish any code in 2019. It added that the combined market cap of these ‘ghost coins’ is over $400 million. “Other than these assets we also have a Scam coin list on our CoinCodeCap website. If we also consider them, then the overall valuation will cross $1 billion,” the report added.