You are viewing a single comment's thread from:RE: IOTA users approve each other’s transactions without miners.View the full contextnnaraoh (51)in #bitcoin • 7 years ago Goldman Sachs is offering BTC derivatives products. https://www.cryptoglobe.com/latest/2018/10/goldman-sachs-is-now-offering-bitcoin-btc-derivatives-products-no-ether-eth-contracts-for-now/