# Get Blocks

Get blocks from the blockchain in reverse block height order.

**Request:**\
`requestType` is *getBlocks*\
`firstIndex` is the first block to retrieve (optional, default is zero or the last block on the blockchain)\
`lastIndex` is the last block to retrieve (optional, default is firstIndex + 99)\
`includeTransactions` is true to include transaction details (optional)

**Response:**

(A) `blocks` is the array of blocks retrieved (refer to Get Block for details)\
(N) `requestProcessingTime` is the API request processing time (in millisec)


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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.