Abra is an exchanges similar to Coinbase on how easy they are and use and how easy it is to buy and sell crypto. Abra has one of the most exciting tokens of the two, namely Bitwise 10 (bit10). Bit10 is an index toxen that resembles a completely valued index fund, though this is a token instead of fund. You can invest as little as $ 5 a month and then in the top 10 currencies, you keep rank in coinmarketcap. I would like to see several index tokens in the future and it will certainly Join now!