Private blockchains Vs Hashgraph, Ripple, BigChainDb
问题 I have been investigating different blockchains for some use cases. In the end, I came to the conclusion that setting up a private blockchain is equivalent to having a distributed database with blockchain concepts like immutability, digital signatures on top of it. Eg: Bigchaindb. (Well, If we do need smart contract feature then distributed database might not work) Theoretically, hashgraph consensus algorithm doesn't look secure enough for a public chain. It looks like a close alternate