> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gomaestro.org/llms.txt
> Use this file to discover all available pages before exploring further.

> Get Bitcoin block transaction volume data including total value transferred and fee information for the specified block.

# Block Volume



## OpenAPI

````yaml bitcoin/node-rpc-api/openapi.json get /block/{height_or_hash}/volume
openapi: 3.1.0
info:
  description: >-
    This API offers direct, low-latency access to Bitcoin full nodes via API
    (JSON-RPC protocol), giving developers reliable mempool visibility,
    transaction relay capabilities, and chain data without the hassle of running
    their own infrastructure.


    #### Key Features:

    - **Full JSON-RPC Support:** Access core Bitcoin functionality through RPC
    calls like `getblock`, `getrawtransaction`, `sendrawtransaction`, etc.

    - **Blockchain Data Retrieval:** Developers can fetch detailed information
    about blocks, transactions, and addresses.

    - **Mempool Insight:** Query unconfirmed transactions for faster, more
    responsive, real-time data access.

    - **High-Availability**: Enterprise-grade infrastructure ensures uptime,
    sync accuracy and fast transaction relay.


    #### Key Benefits for Developers:

    - Skip the operational complexity and computational overhead of maintaining
    self-hosted Bitcoin nodes.

    - Query mempool and chain data to power wallets, explorers, and backends
    with minimal latency.

    - Broadcast and verify transactions with trusted relay endpoints.

    - Build production-ready Bitcoin apps without worrying about node health,
    bandwidth, or reorg handling.
  title: Bitcoin - Node RPC API
  version: 0.1.1
servers:
  - description: Bitcoin Mainnet
    url: https://xbt-mainnet.gomaestro-api.org/v0/rpc
  - description: Bitcoin Testnet
    url: https://xbt-testnet.gomaestro-api.org/v0/rpc
security:
  - api-key: []
externalDocs:
  description: ''
  url: ''
paths:
  /block/{height_or_hash}/volume:
    get:
      tags:
        - Blocks
      summary: Block Volume
      description: |-
        Returns total transaction output volume (in satoshis) for a block.
        This provides insight into economic activity, not just block size.
      operationId: rpc_block_volume
      parameters:
        - description: Block height or hash.
          in: path
          name: height_or_hash
          required: true
          schema:
            type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/api_bitcoin.BlockVolumeResponseBody'
          description: OK
        '500':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/api_bitcoin.APIError'
          description: Error getting block volume.
components:
  schemas:
    api_bitcoin.BlockVolumeResponseBody:
      properties:
        data:
          $ref: '#/components/schemas/api_bitcoin.BlockVolume'
        last_updated:
          $ref: '#/components/schemas/api_bitcoin.LastUpdatedBlock'
      type: object
    api_bitcoin.APIError:
      properties:
        error:
          description: Error returned from the API request
          example: Bad Request
          type: string
      type: object
    api_bitcoin.BlockVolume:
      properties:
        total_output_satoshis:
          type: integer
      type: object
    api_bitcoin.LastUpdatedBlock:
      properties:
        block_hash:
          type: string
        block_height:
          type: integer
      type: object
  securitySchemes:
    api-key:
      description: Project API Key
      in: header
      name: api-key
      type: apiKey

````