Litecoin Blocks API

openapi: 3.0.3
info:
  title: Litecoin Core JSON-RPC Addresses Blocks API
  description: 'The primary programmatic interface to a Litecoin Core node. Clients send HTTP POST requests with JSON-RPC 2.0 payloads to interact with the node. Methods cover blockchain state, block and transaction retrieval, mempool inspection, network peers, mining, UTXO queries, address validation, raw transaction construction and broadcast, and fee estimation. Authentication is required via cookie file or rpcauth credentials. The daemon listens on port 9332 (mainnet), 19332 (testnet), and 19443 (regtest).

    '
  version: '0.21'
  contact:
    name: Litecoin Project
    url: https://github.com/litecoin-project/litecoin
  license:
    name: MIT
    url: https://github.com/litecoin-project/litecoin/blob/master/COPYING
servers:
- url: http://localhost:9332
  description: Litecoin Core mainnet
- url: http://localhost:19332
  description: Litecoin Core testnet
- url: http://localhost:19443
  description: Litecoin Core regtest
security:
- basicAuth: []
tags:
- name: Blocks
  description: Block and header retrieval endpoints
paths:
  /rest/block/{blockHash}.json:
    get:
      operationId: getBlockJson
      summary: Get block with full transaction details (JSON)
      description: 'Returns complete block data including all transaction details in JSON format. Returns 404 if the block is not found.

        '
      parameters:
      - $ref: '#/components/parameters/blockHash'
      responses:
        '200':
          description: Block with full transaction details in JSON format
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Block'
        '404':
          description: Block not found
      tags:
      - Blocks
  /rest/block/{blockHash}.hex:
    get:
      operationId: getBlockHex
      summary: Get block (hex)
      description: Returns complete block data in hex-encoded format.
      parameters:
      - $ref: '#/components/parameters/blockHash'
      responses:
        '200':
          description: Hex-encoded block data
          content:
            text/plain:
              schema:
                type: string
        '404':
          description: Block not found
      tags:
      - Blocks
  /rest/block/{blockHash}.bin:
    get:
      operationId: getBlockBin
      summary: Get block (binary)
      description: Returns complete block data in raw binary format.
      parameters:
      - $ref: '#/components/parameters/blockHash'
      responses:
        '200':
          description: Raw binary block data
          content:
            application/octet-stream:
              schema:
                type: string
                format: binary
        '404':
          description: Block not found
      tags:
      - Blocks
  /rest/block/notxdetails/{blockHash}.json:
    get:
      operationId: getBlockNoTxDetailsJson
      summary: Get block without full transaction details (JSON)
      description: 'Returns block data in JSON format, but the transactions array contains only transaction hashes rather than full transaction objects.

        '
      parameters:
      - $ref: '#/components/parameters/blockHash'
      responses:
        '200':
          description: Block with transaction IDs only in JSON format
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BlockNoTxDetails'
        '404':
          description: Block not found
      tags:
      - Blocks
  /rest/block/notxdetails/{blockHash}.hex:
    get:
      operationId: getBlockNoTxDetailsHex
      summary: Get block without transaction details (hex)
      description: Returns block data in hex-encoded format without full transaction expansion.
      parameters:
      - $ref: '#/components/parameters/blockHash'
      responses:
        '200':
          description: Hex-encoded block data
          content:
            text/plain:
              schema:
                type: string
        '404':
          description: Block not found
      tags:
      - Blocks
  /rest/headers/{count}/{blockHash}.json:
    get:
      operationId: getBlockHeadersJson
      summary: Get block headers (JSON)
      description: 'Retrieves the specified number of block headers starting from the given block hash and going in the upward (newer) direction.

        '
      parameters:
      - $ref: '#/components/parameters/count'
      - $ref: '#/components/parameters/blockHash'
      responses:
        '200':
          description: Array of block headers in JSON format
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/BlockHeader'
        '404':
          description: Block not found
      tags:
      - Blocks
  /rest/headers/{count}/{blockHash}.hex:
    get:
      operationId: getBlockHeadersHex
      summary: Get block headers (hex)
      description: Returns the specified number of block headers in hex-encoded format.
      parameters:
      - $ref: '#/components/parameters/count'
      - $ref: '#/components/parameters/blockHash'
      responses:
        '200':
          description: Hex-encoded block headers
          content:
            text/plain:
              schema:
                type: string
        '404':
          description: Block not found
      tags:
      - Blocks
  /rest/blockhashbyheight/{height}.json:
    get:
      operationId: getBlockHashByHeightJson
      summary: Get block hash by height (JSON)
      description: Returns the hash of the block at the specified height in JSON format.
      parameters:
      - $ref: '#/components/parameters/height'
      responses:
        '200':
          description: Block hash in JSON format
          content:
            application/json:
              schema:
                type: object
                properties:
                  blockhash:
                    type: string
                    description: The block hash at the specified height
        '404':
          description: Block height not found
      tags:
      - Blocks
  /rest/blockhashbyheight/{height}.hex:
    get:
      operationId: getBlockHashByHeightHex
      summary: Get block hash by height (hex)
      description: Returns the hash of the block at the specified height in hex format.
      parameters:
      - $ref: '#/components/parameters/height'
      responses:
        '200':
          description: Block hash as hex string
          content:
            text/plain:
              schema:
                type: string
        '404':
          description: Block height not found
      tags:
      - Blocks
  /block/{hash}:
    get:
      operationId: getBlock
      summary: Get block details
      description: Returns details about the block including header fields and transaction summary.
      parameters:
      - $ref: '#/components/parameters/hash'
      responses:
        '200':
          description: Block details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Block_2'
        '404':
          description: Block not found
      tags:
      - Blocks
  /block/{hash}/header:
    get:
      operationId: getBlockHeader
      summary: Get block header
      description: Returns the hex-encoded block header.
      parameters:
      - $ref: '#/components/parameters/hash'
      responses:
        '200':
          description: Hex-encoded block header
          content:
            text/plain:
              schema:
                type: string
        '404':
          description: Block not found
      tags:
      - Blocks
  /block-height/{height}:
    get:
      operationId: getBlockHashAtHeight
      summary: Get block hash at height
      description: Returns the hash of the block at the specified height.
      parameters:
      - $ref: '#/components/parameters/height'
      responses:
        '200':
          description: Block hash as plain text
          content:
            text/plain:
              schema:
                type: string
        '404':
          description: Block height not found
      tags:
      - Blocks
  /block/{hash}/raw:
    get:
      operationId: getBlockRaw
      summary: Get raw block data
      description: Returns the raw block data in binary format.
      parameters:
      - $ref: '#/components/parameters/hash'
      responses:
        '200':
          description: Raw binary block data
          content:
            application/octet-stream:
              schema:
                type: string
                format: binary
        '404':
          description: Block not found
      tags:
      - Blocks
  /block/{hash}/status:
    get:
      operationId: getBlockStatus
      summary: Get block confirmation status
      description: Returns the confirmation status of a block.
      parameters:
      - $ref: '#/components/parameters/hash'
      responses:
        '200':
          description: Block confirmation status
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BlockStatus'
      tags:
      - Blocks
  /blocks/tip/height:
    get:
      operationId: getBlockTipHeight
      summary: Get latest block height
      description: Returns the height of the latest confirmed block.
      responses:
        '200':
          description: Current block height as plain integer
          content:
            text/plain:
              schema:
                type: integer
      tags:
      - Blocks
  /blocks/tip/hash:
    get:
      operationId: getBlockTipHash
      summary: Get latest block hash
      description: Returns the hash of the latest confirmed block.
      responses:
        '200':
          description: Current block hash as plain text
          content:
            text/plain:
              schema:
                type: string
      tags:
      - Blocks
  /block/{hash}/txid/{index}:
    get:
      operationId: getBlockTxid
      summary: Get transaction ID at index in block
      description: Returns the transaction ID at the specified index within the block.
      parameters:
      - $ref: '#/components/parameters/hash'
      - name: index
        in: path
        required: true
        description: Zero-based transaction index within the block
        schema:
          type: integer
          minimum: 0
      responses:
        '200':
          description: Transaction ID
          content:
            text/plain:
              schema:
                type: string
        '404':
          description: Not found
      tags:
      - Blocks
  /block/{hash}/txids:
    get:
      operationId: getBlockTxids
      summary: Get all transaction IDs in block
      description: Returns all transaction IDs included in the block.
      parameters:
      - $ref: '#/components/parameters/hash'
      responses:
        '200':
          description: Array of transaction IDs
          content:
            application/json:
              schema:
                type: array
                items:
                  type: string
        '404':
          description: Block not found
      tags:
      - Blocks
  /block/{hash}/txs/{startIndex}:
    get:
      operationId: getBlockTxs
      summary: Get block transactions
      description: Returns up to 25 transactions from the block starting at the given index.
      parameters:
      - $ref: '#/components/parameters/hash'
      - name: startIndex
        in: path
        required: true
        description: Starting index (must be a multiple of 25)
        schema:
          type: integer
          minimum: 0
      responses:
        '200':
          description: Array of transactions
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Transaction_2'
        '404':
          description: Block not found
      tags:
      - Blocks
  /blocks/{startHeight}:
    get:
      operationId: getBlocks
      summary: Get recent blocks
      description: Returns the past 10 blocks before the specified height (or tip if omitted).
      parameters:
      - name: startHeight
        in: path
        required: false
        description: Block height to start from (defaults to chain tip)
        schema:
          type: integer
      responses:
        '200':
          description: Array of blocks
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Block_2'
      tags:
      - Blocks
  /v1/blocks/{startHeight}:
    get:
      operationId: getBlocksV1
      summary: Get recent blocks with mining data (v1)
      description: Returns the past 15 blocks before the specified height including mining pool information.
      parameters:
      - name: startHeight
        in: path
        required: false
        description: Block height to start from (defaults to chain tip)
        schema:
          type: integer
      responses:
        '200':
          description: Array of blocks with mining data
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/BlockWithMining'
      tags:
      - Blocks
  /v1/blocks-bulk/{minHeight}/{maxHeight}:
    get:
      operationId: getBlocksBulk
      summary: Get bulk range of blocks
      description: Returns a range of blocks (up to 10 at a time) by height range.
      parameters:
      - name: minHeight
        in: path
        required: true
        schema:
          type: integer
      - name: maxHeight
        in: path
        required: true
        schema:
          type: integer
      responses:
        '200':
          description: Array of blocks in the height range
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Block_2'
      tags:
      - Blocks
components:
  schemas:
    Transaction:
      type: object
      properties:
        txid:
          type: string
          description: Transaction ID
        hash:
          type: string
          description: Transaction hash (differs from txid for segwit)
        size:
          type: integer
          description: Transaction size in bytes
        vsize:
          type: integer
          description: Virtual transaction size
        weight:
          type: integer
          description: Transaction weight
        version:
          type: integer
          description: Transaction version
        locktime:
          type: integer
          description: Transaction lock time
        vin:
          type: array
          items:
            type: object
            properties:
              txid:
                type: string
              vout:
                type: integer
              scriptSig:
                type: object
              txinwitness:
                type: array
                items:
                  type: string
              sequence:
                type: integer
        vout:
          type: array
          items:
            type: object
            properties:
              value:
                type: number
                description: Output value in LTC
              n:
                type: integer
              scriptPubKey:
                type: object
        blockhash:
          type: string
          description: Hash of the block containing this transaction
        confirmations:
          type: integer
          description: Number of confirmations
        time:
          type: integer
          description: Transaction time (Unix timestamp)
        blocktime:
          type: integer
          description: Block time (Unix timestamp)
    Block_2:
      type: object
      properties:
        id:
          type: string
          description: Block hash
        height:
          type: integer
        version:
          type: integer
        timestamp:
          type: integer
        tx_count:
          type: integer
        size:
          type: integer
        weight:
          type: integer
        merkle_root:
          type: string
        previousblockhash:
          type: string
        mediantime:
          type: integer
        nonce:
          type: integer
        bits:
          type: integer
        difficulty:
          type: number
    BlockHeader:
      type: object
      properties:
        hash:
          type: string
        confirmations:
          type: integer
        height:
          type: integer
        version:
          type: integer
        versionHex:
          type: string
        merkleroot:
          type: string
        time:
          type: integer
        mediantime:
          type: integer
        nonce:
          type: integer
        bits:
          type: string
        difficulty:
          type: number
        chainwork:
          type: string
        nTx:
          type: integer
        previousblockhash:
          type: string
        nextblockhash:
          type: string
    Block:
      type: object
      properties:
        hash:
          type: string
          description: Block hash
        confirmations:
          type: integer
        size:
          type: integer
        strippedsize:
          type: integer
        weight:
          type: integer
        height:
          type: integer
        version:
          type: integer
        versionHex:
          type: string
        merkleroot:
          type: string
        tx:
          type: array
          items:
            $ref: '#/components/schemas/Transaction'
          description: Full transaction objects
        time:
          type: integer
        mediantime:
          type: integer
        nonce:
          type: integer
        bits:
          type: string
        difficulty:
          type: number
        chainwork:
          type: string
        nTx:
          type: integer
        previousblockhash:
          type: string
        nextblockhash:
          type: string
    Transaction_2:
      type: object
      properties:
        txid:
          type: string
        version:
          type: integer
        locktime:
          type: integer
        vin:
          type: array
          items:
            $ref: '#/components/schemas/TxInput'
        vout:
          type: array
          items:
            $ref: '#/components/schemas/TxOutput'
        size:
          type: integer
        weight:
          type: integer
        sigops:
          type: integer
        fee:
          type: integer
          description: Transaction fee in satoshis
        status:
          $ref: '#/components/schemas/TxStatus'
    BlockWithMining:
      allOf:
      - $ref: '#/components/schemas/Block_2'
      properties:
        extras:
          type: object
          properties:
            reward:
              type: integer
            coinbaseTx:
              type: object
            totalFees:
              type: integer
            avgFee:
              type: integer
            avgFeeRate:
              type: integer
            pool:
              type: object
              properties:
                id:
                  type: integer
                name:
                  type: string
                slug:
                  type: string
    BlockStatus:
      type: object
      properties:
        in_best_chain:
          type: boolean
        height:
          type: integer
        next_best:
          type: string
    TxInput:
      type: object
      properties:
        txid:
          type: string
        vout:
          type: integer
        prevout:
          $ref: '#/components/schemas/TxOutput'
        scriptsig:
          type: string
        scriptsig_asm:
          type: string
        witness:
          type: array
          items:
            type: string
        is_coinbase:
          type: boolean
        sequence:
          type: integer
    TxStatus:
      type: object
      properties:
        confirmed:
          type: boolean
        block_height:
          type: integer
          nullable: true
        block_hash:
          type: string
          nullable: true
        block_time:
          type: integer
          nullable: true
    TxOutput:
      type: object
      properties:
        scriptpubkey:
          type: string
        scriptpubkey_asm:
          type: string
        scriptpubkey_type:
          type: string
        scriptpubkey_address:
          type: string
        value:
          type: integer
          description: Output value in satoshis
    BlockNoTxDetails:
      allOf:
      - $ref: '#/components/schemas/Block'
      properties:
        tx:
          type: array
          items:
            type: string
          description: Array of transaction IDs only
  parameters:
    hash:
      name: hash
      in: path
      required: true
      description: Block hash in hex format
      schema:
        type: string
        pattern: ^[0-9a-fA-F]{64}$
    height:
      name: height
      in: path
      required: true
      description: Block height (0-indexed from genesis)
      schema:
        type: integer
        minimum: 0
    blockHash:
      name: blockHash
      in: path
      required: true
      description: Block hash in hex format
      schema:
        type: string
        pattern: ^[0-9a-fA-F]{64}$
    count:
      name: count
      in: path
      required: true
      description: Number of block headers to retrieve
      schema:
        type: integer
        minimum: 1
        maximum: 2000
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: 'HTTP Basic Authentication using credentials from the .litecoin/.cookie file or configured via rpcauth in litecoin.conf.

        '
externalDocs:
  description: Litecoin Core JSON-RPC Interface Documentation
  url: https://github.com/litecoin-project/litecoin/blob/master/doc/JSON-RPC-interface.md