Ping Identity earlier this summer struck a partnership with a startup called Swirlds, investing an undisclosed amount of money in the company. Swirlds, founded by CEO Leemon Baird, introduced what it calls hashgraph, which is similar to the distributed ledger featured in bitcoin’s blockchain scheme, with one important difference: instead of recording one transaction after another in a chain, the hashgraph algorithm weaves multiple transactions together at the same time in a graph.