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The hashgraph algorithm requires that nodes add two hashes, a timestamp, and the node's signature to the fundamental payload of business transactions within an event. It is the two hashes that allow all nodes to create a consistent representation of... (More)

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The hashgraph consensus algorithm has been validated as asynchronous Byzantine fault tolerant by a math proof checked by computer using Coq, a formal proof verification system. Coq provides a formal language to write mathematical definitions and executable algorithms and theorems... (More)

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When a transaction is given a consensus timestamp, the network of nodes, as a whole, generates that timestamp. The hashgraph shows the time at which each node first received the transaction. The consensus timestamp is defined to be the median... (More)

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The Hedera network, at its foundation, is built on the hashgraph consensus algorithm. Hashgraph is based on a gossip protocol, in which the participants don’t just gossip about transactions - they also gossip about gossip. By adding information about their... (More)