Hashgraph: Blockchain Improved

Hashgraph is a distributed ledger technology that bases itself in the constant intercommunication of clients, called nodes, that form a web of neverending communication. Each node is always communicating its state with other nodes randomly chosen among all nodes of the web. Hashgraph aims to substitute blockchain, and according to some, it presents some tangible advantages in front of the still new blockchain technology.
This technology was created by Lemon Baird, and unlike blockchain, that has to deal with propagation times and verifications for transactions, the Hashgraph network always tends to be correct because nodes are always verifying and communicating its states with other nodes (what is called gossiping). Because of this, there is virtually no limit to the number of transactions that can be made per second, only being limited by the bandwidth available in the network. In theory, a Hashgraph network can maintain a rate of 250k operations per second, while bitcoin can manage a range of 5-7.
Also, because there is no proof of work or stake, there is no need for miners and no mining involved, being way more efficient than the actual algorithms that rely on miners and rewards to maintain the network. While all this sound good, if there is no mining involved, there is also no interest in maintaining the network other than the network itself. And that is why Hashgraph profiles itself better as a private distributed ledger technology.
While all that we said its indeed true, the problem with Hashgraph lies in its origin: Hashgraph is not an open source project, it is a closed one with private implementations. The platform of Hashgraph relies on knowing at every time the number of nodes in a network. In the reality of a public implementation, it will be difficult to do so, because nodes can appear and disappear at different times.
It is also an experimental and new product that has to be tried extensively. An ICO called Hedera Hashgraph is being promoted to be launched in the second half of this year, but it is unclear of how will they manage the disadvantages mentioned earlier. In the paper, the technology of Hashgraph seems to be better than blockchain in many ways, but it needs to be tested in the heat of a public network to examine its behavior.

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