DesignIntroductionDesignNetwork CommunicationIdentityInter-node connectionsNetworkGossipingRequesting missing dataNode DiscoveryExecution SemanticsMeasuring computational workDeploysThe Casper Network runtimeAccountsCreating an accountPermissions modelThe account contextUnforgeable Reference (URef)Permissions for URefsBlock StructureData fieldsTokensToken Generation and DistributionDivisibility of TokensPurses and AccountsSerialization StandardBlockDeployValuesKeysPermissions