The hashgraph is ACID compliant. ACID (Atomicity, Consistency, Isolation, Durability) is a database term and applies to the hashgraph when it is used as a distributed database. A community of nodes uses it to reach a consensus on the order in which transactions occurred. After reaching consensus, each node feeds those transactions to that node’s local copy of the database, sending in each one in the consensus order. If the local database has all the standard properties of a database (ACID), then the community as a whole can be said to have a single, distributed database with those same properties. In blockchain, there is never a moment when you know that consensus has been reached, so it would not be ACID compliant.