A Consortium blockchain is a semi-private hybrid between Public and Private blockchains, with typically more than one organization involved in node operation or selection. Participant organizations are part of a closed list. Therefore the information within the blocks may not be accessible to the public, and the ability to add transactions is limited to those authorized organizations; however, there is some limited degree of decentralization since no single authority governs the network. Consensus is typically achieved through a voting or multi-party consensus algorithm. Criticisms of this model include lower security and lack of a fully trustless environment due to higher centralization than a fully permissionless blockchain.