Yes exactly! Amazon has no choice but to adopt crypto. open.BTC is same as BTC excepts that your BTC is deposited in openledger. For example when you see open.BSD that means your BSD is in your openLedger. If you want to learn more about the bitUSD https://steemit.com/bitshares/@xeroc/what-makes-the-bitusd-than-nubits. The bitBTC is the pretty much the same as open.BTC except that its much better than open.BTC because every bitBTC is backed with BTC.