Blockchain.com Blocks API

openapi: 3.0.3
info:
  title: Blockchain.com Charts, Stats & Market Data Addresses Blocks API
  description: 'Aggregated JSON endpoints covering Bitcoin network statistics, historical chart datasets,

    mining pool distribution, BTC exchange rates (ticker) and fiat-to-BTC conversion. Generated

    from https://www.blockchain.com/explorer/api/charts_api and

    https://www.blockchain.com/explorer/api/exchange_rates_api.

    '
  version: 1.0.0
  contact:
    name: Blockchain.com
    url: https://www.blockchain.com/api
  license:
    name: Blockchain.com API Terms of Service
    url: https://www.blockchain.com/legal/terms
  x-generated-from: documentation
  x-last-validated: '2026-05-30'
servers:
- url: https://api.blockchain.info
  description: Blockchain.com aggregated data host (charts, stats, pools).
- url: https://blockchain.info
  description: Blockchain.info explorer host (ticker, fiat-to-BTC conversion).
tags:
- name: Blocks
  description: Bitcoin block lookups and the latest block.
paths:
  /rawblock/{block_hash}:
    get:
      operationId: getBlock
      summary: Blockchain.com Get a Single Block
      description: Returns detailed information about a specific block identified by its hash.
      tags:
      - Blocks
      parameters:
      - name: block_hash
        in: path
        required: true
        description: Bitcoin block hash (64-character hex).
        schema:
          type: string
          example: 0000000000000000000abc...
      - name: format
        in: query
        required: false
        description: If set to `hex`, returns the raw block as a binary hex string.
        schema:
          type: string
          enum:
          - hex
      responses:
        '200':
          description: Block detail.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Block'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /block-height/{block_height}:
    get:
      operationId: getBlocksByHeight
      summary: Blockchain.com Get Blocks at a Height
      description: Returns the array of blocks at the specified blockchain height.
      tags:
      - Blocks
      parameters:
      - name: block_height
        in: path
        required: true
        description: Block height (non-negative integer).
        schema:
          type: integer
          example: 850000
      - name: format
        in: query
        required: true
        description: Must be `json` to return JSON.
        schema:
          type: string
          enum:
          - json
      responses:
        '200':
          description: Blocks at the requested height.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BlockListResponse'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /latestblock:
    get:
      operationId: getLatestBlock
      summary: Blockchain.com Get the Latest Block
      description: Returns the most recent block on the longest chain.
      tags:
      - Blocks
      responses:
        '200':
          description: Latest block summary.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LatestBlock'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    Block:
      type: object
      description: A Bitcoin block including its transactions, header, and chain status.
      properties:
        hash:
          type: string
          description: Block hash.
          example: 00000000000000000004f4e7a1...
        ver:
          type: integer
          description: Block version.
          example: 536870912
        prev_block:
          type: string
          description: Previous block hash.
        mrkl_root:
          type: string
          description: Merkle root.
        time:
          type: integer
          format: int64
          description: Block timestamp (Unix seconds).
          example: 1748609400000
        bits:
          type: integer
          description: Difficulty bits.
          example: 1
        nonce:
          type: integer
          format: int64
          description: Nonce used to mine the block.
          example: 1
        n_tx:
          type: integer
          description: Number of transactions in the block.
          example: 1
        size:
          type: integer
          description: Block size in bytes.
          example: 1
        block_index:
          type: integer
          format: int64
          description: Internal block index.
          example: 1
        main_chain:
          type: boolean
          description: True if this block is part of the main chain.
          example: true
        height:
          type: integer
          description: Block height.
          example: 851234
        tx:
          type: array
          description: List of transactions included in the block.
          items:
            $ref: '#/components/schemas/Transaction'
    BlockListResponse:
      type: object
      description: Wrapper used by `block-height/{height}` returning an array of `Block` objects.
      properties:
        blocks:
          type: array
          items:
            $ref: '#/components/schemas/Block'
    Transaction:
      type: object
      description: A Bitcoin transaction with its inputs and outputs.
      properties:
        hash:
          type: string
          description: Transaction hash.
          example: 00000000000000000004f4e7a18a09b1f8e96d6fb01d9b6fce4d12cb3f8a7e21
        ver:
          type: integer
          description: Transaction version.
          example: 1
        vin_sz:
          type: integer
          description: Number of inputs.
          example: 1
        vout_sz:
          type: integer
          description: Number of outputs.
          example: 1
        size:
          type: integer
          description: Serialized transaction size in bytes.
          example: 1
        weight:
          type: integer
          description: Transaction weight (BIP141).
          example: 1
        fee:
          type: integer
          format: int64
          description: Fee paid in Satoshi.
          example: 1
        relayed_by:
          type: string
          description: IP address that relayed the transaction.
        lock_time:
          type: integer
          format: int64
          description: Lock time (block height or Unix seconds).
          example: 1748609400000
        tx_index:
          type: integer
          format: int64
          description: Internal transaction index.
          example: 1
        double_spend:
          type: boolean
          description: True if the transaction is a known double-spend.
          example: true
        time:
          type: integer
          format: int64
          description: First-seen time (Unix seconds).
          example: 1748609400000
        block_index:
          type: integer
          format: int64
          description: Block index containing the transaction (null if unconfirmed).
          example: 1
        block_height:
          type: integer
          description: Block height containing the transaction (null if unconfirmed).
          example: 851234
        inputs:
          type: array
          description: Transaction inputs.
          items:
            $ref: '#/components/schemas/TxInput'
        out:
          type: array
          description: Transaction outputs.
          items:
            $ref: '#/components/schemas/TxOutput'
    LatestBlock:
      type: object
      description: Lightweight summary of the most recent block.
      properties:
        hash:
          type: string
          description: Block hash.
          example: 00000000000000000004f4e7a18a09b1f8e96d6fb01d9b6fce4d12cb3f8a7e21
        time:
          type: integer
          format: int64
          description: Block timestamp (Unix seconds).
          example: 1748609400000
        block_index:
          type: integer
          format: int64
          description: Internal block index.
          example: 1
        height:
          type: integer
          description: Block height.
          example: 851234
        txIndexes:
          type: array
          description: Internal transaction indexes for transactions in this block.
          items:
            type: integer
            format: int64
            example: 1
    TxOutput:
      type: object
      description: A single Bitcoin transaction output (a UTXO before it is spent).
      properties:
        type:
          type: integer
          description: Output type indicator.
          example: 1
        spent:
          type: boolean
          description: True if the output has been spent.
          example: true
        value:
          type: integer
          format: int64
          description: Value in Satoshi.
          example: 100000
        spending_outpoints:
          type: array
          description: Outpoints that spent this output (when spent).
          items:
            type: object
            properties:
              tx_index:
                type: integer
                format: int64
              n:
                type: integer
        n:
          type: integer
          description: Output index within the transaction.
          example: 1
        tx_index:
          type: integer
          format: int64
          description: Internal transaction index.
          example: 1
        script:
          type: string
          description: Output script (scriptPubKey) as hex.
        addr:
          type: string
          description: Destination address (when derivable).
    TxInput:
      type: object
      description: A single Bitcoin transaction input.
      properties:
        sequence:
          type: integer
          format: int64
          description: Sequence number.
          example: 1
        witness:
          type: string
          description: SegWit witness data.
        script:
          type: string
          description: Input script (scriptSig) as hex.
        prev_out:
          $ref: '#/components/schemas/TxOutput'