Amazon Announces Two Blockchain-Related Products; Quantum Ledger and Managed Blockchain; SEC Chairman Jay Clayton Reveals Why The Regulator Will Not Approve A Bitcoin ETF https://www.pivot.one/share/post/5bff353acd5ee773576513ee?uid=5bb24a5d83c8290c89839855&invite_code=HPZXDP …pic.twitter.com/jYoIZcawFw