> ## 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 the Cardano blockchain system start time and initial parameters used to bootstrap the network.

# Blockchain system start



## OpenAPI

````yaml cardano/blockchain-indexer-api/openapi.json get /system-start
openapi: 3.0.3
info:
  title: Cardano - Blockchain Indexer API
  description: Core indexer endpoints dedicated to Cardano.
  contact:
    name: Maestro Blockchain Inc.
    url: https://gomaestro.org/
    email: info@gomaestro.org
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.txt
  version: v1.8.0
servers:
  - url: https://mainnet.gomaestro-api.org/v1
    description: Cardano Mainnet
  - url: https://preprod.gomaestro-api.org/v1
    description: Cardano Preprod
  - url: https://preview.gomaestro-api.org/v1
    description: Cardano Preview
security:
  - api-key: []
tags:
  - name: Maestro
paths:
  /system-start:
    get:
      tags:
        - General
      summary: Blockchain system start
      description: Returns the blockchain system start time
      operationId: system_start
      responses:
        '200':
          description: Get system start time
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TimestampedSystemStart'
              example:
                data: '2017-09-23 21:44:51'
                last_updated:
                  timestamp: '2022-10-10 20:25:28'
                  block_hash: >-
                    2e220d7adfe5b9e6444894ae237679c29d71fc4b44cc36aa9156262b4bb4c159
                  block_slot: 96402974
        '500':
          description: Internal server error
components:
  schemas:
    TimestampedSystemStart:
      type: object
      description: >-
        Timestamped response. Returns the endpoint response data along with the
        chain-tip of the indexer, which details at which point in the chain's
        history the data was correct as-of.
      required:
        - data
        - last_updated
      properties:
        data:
          $ref: '#/components/schemas/SystemStart'
        last_updated:
          $ref: '#/components/schemas/LastUpdated'
    SystemStart:
      type: string
    LastUpdated:
      type: object
      description: >-
        Details of the most recent block processed by the indexer (aka chain
        tip); that is, the data returned is correct as of this block in time.
      required:
        - timestamp
        - block_hash
        - block_slot
      properties:
        block_hash:
          type: string
          description: >-
            Hex-encoded hash of the most recently processed block (aka chain
            tip)
        block_slot:
          type: integer
          format: int64
          description: Absolute slot of the most recently processed block (aka chain tip)
          minimum: 0
        timestamp:
          type: string
          description: UTC timestamp of when the most recently processed block was minted
  securitySchemes:
    api-key:
      type: apiKey
      in: header
      name: api-key
      description: Project API Key

````