# Translations: Blocks/11/en

From ArdorDocs

**Response:**

*currentMinRollbackHeight*(N) is the current minimum rollback height*numberOfBlocks*(N) is the number of blocks in the blockchain (height + 1)*isTestnet*(B) is*true*if the node is connected to testnet,*false*otherwise*includeExpiredPrunable*(B) is the value of the*nxt.includeExpiredPrunable*property*requestProcessingTime*(N) is the API request processing time (in millisec)*version*(S) is the application version*maxRollback*(N) is the value of the*nxt.maxRollback*property*lastBlock*(S) is the last block ID on the blockchain*application*(S) is application name, typically*NRS**isScanning*(B) is*true*if the blockchain is being scanned by the application,*false*otherwise*isDownloading*(B) is*true*if a download is in progress,*false*otherwise;*true*when a batch of more than 10 blocks at once has been downloaded from a peer, reset to*false*when an attempt to download more blocks from a peer does not result in any new blocks*cumulativeDifficulty*(S) is the cumulative difficulty*lastBlockchainFeederHeight*(N) is the height of the last blockchain of greatest cumulative difficulty obtained from a peer*maxPrunableLifetime*(N) is the maximum prunable lifetime (in seconds)*time*(N) is the current timestamp (in seconds since the genesis block)*lastBlockchainFeeder*(S) is the address or announced address of the peer providing the last blockchain of greatest cumulative difficulty*blockchainState*(S) Current state of this node's blockchain (UP_TO_DATE or DOWNLOADING)