bitcoin is the first global currency; it's proof of concept however it's awful because it relies on (delegated) proof of work (POW), which requires lots and lots of energy making transactions incredibly expensive and slow. Also, BTC is just a currency; there's no product or service related to it. BitShares, is magic. BTS is a decentralized exchange network, which uses delegated proof of stake consensus, and offers a wide assortment of financial services including banking and asset exchange opportunities.