Abstract: A Quorum network comprising an access controlled multi-tenant network is provided that is configured to enable access control and state isolation in a multi-tenancy Ethereum-based distributed ledger system. The access-controlled network includes one or more authenticating servers (also referred to as access controls) for providing permission control to the nodes in the network. In a standard multi-tenant network, each user of an entity (also referred to as an organization) is limited to only transacting with (also referred to as accessing) their own authorized resources. The access-controlled network utilizes an access controller to provide a singular truth for a set of managed nodes through a trusted entity (such as a Network Authorization Server).

Abstract: Systems and methods for privacy in distributed ledger transactions are disclosed. In one embodiment, in an information processing apparatus comprising at least one computer processor for a first node in a computer network comprising a plurality of nodes, a method for generating a key directory in a network comprising a plurality of nodes may include: (1) advertising a public key for a first node to the other nodes; (2) receiving public key information from each of the plurality of nodes; and (3) generating a public key directory that associates each node in the computer network with its public key.