Bitcoin and cryptocurrency prices have soared this week, with bitcoin nearing $50,000 per bitcoin for the first time since mid-May (subscribe now to Forbes' CryptoAsset & Blockchain Advisor and discover crypto blockbusters poised for 1,000% gains).

The crypto price rally—led by top ten tokens by value ethereum, dogecoin and uniswap and adding $300 billion to the market over the last week—comes after ethereum underwent a closely-watched upgrade this week, helping ethereum far outpace bitcoin and raising expectations of the so-called "flippening."