Blockchain.com Market Data API

openapi: 3.0.3
info:
  title: Blockchain.com Charts, Stats & Addresses Market Data 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: Market Data
  description: Bitcoin exchange rates and fiat conversion.
paths:
  /ticker:
    get:
      operationId: getTicker
      summary: Blockchain.com Get Exchange-rate Ticker
      description: Returns a map of currency codes to current Bitcoin price data.
      tags:
      - Market Data
      servers:
      - url: https://blockchain.info
      parameters:
      - name: cors
        in: query
        required: false
        description: If true, the response will include CORS headers.
        schema:
          type: boolean
      responses:
        '200':
          description: Ticker map keyed by ISO currency code.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Ticker'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /tobtc:
    get:
      operationId: convertToBtc
      summary: Blockchain.com Convert Fiat to BTC
      description: Converts a fiat amount to its current BTC equivalent.
      tags:
      - Market Data
      servers:
      - url: https://blockchain.info
      parameters:
      - name: currency
        in: query
        required: true
        description: ISO currency code (e.g. `USD`, `EUR`, `GBP`).
        schema:
          type: string
          example: USD
      - name: value
        in: query
        required: true
        description: Amount of fiat to convert.
        schema:
          type: number
          example: 500
      responses:
        '200':
          description: BTC equivalent value.
          content:
            application/json:
              schema:
                type: number
                example: 0.00702345
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /symbols:
    get:
      operationId: listSymbols
      summary: Blockchain.com List Trading Symbols
      description: Returns the full set of trading symbols and their metadata.
      tags:
      - Market Data
      security: []
      responses:
        '200':
          description: Map of symbol code to symbol metadata.
          content:
            application/json:
              schema:
                type: object
                additionalProperties:
                  $ref: '#/components/schemas/Symbol'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /symbols/{symbol}:
    get:
      operationId: getSymbol
      summary: Blockchain.com Get a Single Symbol
      description: Returns metadata for a specific trading symbol.
      tags:
      - Market Data
      security: []
      parameters:
      - $ref: '#/components/parameters/SymbolPath'
      responses:
        '200':
          description: Symbol metadata.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Symbol'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /tickers:
    get:
      operationId: listTickers
      summary: Blockchain.com List Tickers
      description: Returns current price and 24-hour metrics for all trading pairs.
      tags:
      - Market Data
      security: []
      responses:
        '200':
          description: Array of tickers.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Ticker_2'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /tickers/{symbol}:
    get:
      operationId: getTicker
      summary: Blockchain.com Get a Single Ticker
      description: Returns the current price and 24-hour metrics for one trading pair.
      tags:
      - Market Data
      security: []
      parameters:
      - $ref: '#/components/parameters/SymbolPath'
      responses:
        '200':
          description: Single ticker.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Ticker_2'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /l2/{symbol}:
    get:
      operationId: getL2OrderBook
      summary: Blockchain.com Get Level-2 Order Book
      description: Returns the aggregated price-level order book for a symbol.
      tags:
      - Market Data
      security: []
      parameters:
      - $ref: '#/components/parameters/SymbolPath'
      responses:
        '200':
          description: L2 order book.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OrderBook'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /l3/{symbol}:
    get:
      operationId: getL3OrderBook
      summary: Blockchain.com Get Level-3 Order Book
      description: Returns the full per-order book for a symbol.
      tags:
      - Market Data
      security: []
      parameters:
      - $ref: '#/components/parameters/SymbolPath'
      responses:
        '200':
          description: L3 order book.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OrderBook'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    TickerEntry:
      type: object
      description: Current BTC pricing in a single fiat currency.
      properties:
        15m:
          type: number
          description: 15-minute delayed market price.
          example: 1.0
        last:
          type: number
          description: Most recent market price.
          example: 1.0
        buy:
          type: number
          description: Current buy price.
          example: 1.0
        sell:
          type: number
          description: Current sell price.
          example: 1.0
        symbol:
          type: string
          description: Currency symbol (e.g. `$`, `€`, `£`).
          example: BTC-USD
    Ticker_2:
      type: object
      description: Current price and 24-hour metrics for a single trading pair.
      properties:
        symbol:
          type: string
          example: BTC-USD
        price_24h:
          type: number
          description: 24-hour reference price.
          example: 72525.0
        volume_24h:
          type: number
          description: Trading volume over the last 24 hours.
          example: 0.5
        last_trade_price:
          type: number
          description: Most recent trade price.
          example: 72525.0
    OrderBook:
      type: object
      description: Aggregated (L2) or per-order (L3) order book for a symbol.
      properties:
        symbol:
          type: string
          example: BTC-USD
        bids:
          type: array
          items:
            $ref: '#/components/schemas/PriceLevel'
        asks:
          type: array
          items:
            $ref: '#/components/schemas/PriceLevel'
    Ticker:
      type: object
      description: Map of currency code to Bitcoin price data.
      additionalProperties:
        $ref: '#/components/schemas/TickerEntry'
    PriceLevel:
      type: object
      description: One side of the order book at a single price.
      properties:
        px:
          type: number
          description: Price.
          example: 72525.0
        qty:
          type: number
          description: Quantity available at this price.
          example: 0.5
        num:
          type: integer
          description: Number of orders at this price (L2 only).
    Symbol:
      type: object
      description: Metadata describing one trading pair on the Exchange.
      properties:
        base_currency:
          type: string
          description: Base currency ticker.
          example: BTC
        base_currency_scale:
          type: integer
          description: Decimal precision of the base currency.
          example: 8
        counter_currency:
          type: string
          description: Counter currency ticker.
          example: USD
        counter_currency_scale:
          type: integer
          description: Decimal precision of the counter currency.
          example: 2
        min_price_increment:
          type: number
          description: Smallest price increment allowed.
          example: 72525.0
        min_price_increment_scale:
          type: integer
          example: 8
        min_order_size:
          type: integer
          description: Minimum order size (in counter currency minor units).
        min_order_size_scale:
          type: integer
          example: 8
        max_order_size:
          type: integer
        max_order_size_scale:
          type: integer
          example: 8
        lot_size:
          type: integer
          description: Lot size for orders.
        lot_size_scale:
          type: integer
          example: 8
        status:
          type: string
          description: Symbol status (`open` or `close`).
          example: open
        id:
          type: integer
          description: Internal symbol identifier.
        auction_price:
          type: number
          example: 72525.0
        auction_size:
          type: number
        auction_time:
          type: integer
          format: int64
          example: 1748609400000
        imbalance:
          type: number
  parameters:
    SymbolPath:
      name: symbol
      in: path
      required: true
      description: Trading pair symbol (e.g. `BTC-USD`).
      schema:
        type: string
        example: BTC-USD