Index tokens like CMC20 track a basket of cryptocurrencies. Credit: Nataliya Vaitkevich via Pexels. Key Takeaways CoinMarketCap has launched a new intex token. CMC20 tracks a basket of the top 20 cryptocurrencies. Index tokens present an alternative to off-chain multi-coin investment products. CoinMarketCap on Monday, Nov. 17, launched CMC20—a new “index token” that tracks a basket of the top 20 cryptocurrencies by market capitalization. The concept appeals to rising demand for diversified crypto e ...