The University of SydneyPage 57Types of Blockchains•Public
•Open to anyone to join•All can validate blocks•All can read the data in blocksConsortium
•New nodes are accepted based on a consensus•Blocks are validated according to predefined rules•Read rights can be limitedPrivate
•Node are chosen by the authority•Blocks are validated by the central authority•Read rights can be limitedPermissionlessPermissioned