Launch AppUtility
🗄️Developer Resource // JSON Endpoint

CRKN JSON Data API

Access 270 data points for CRKN spanning 6 years (2021–Mar 2, 2026). Optimized JSON format (39.6 KB).

Download as CSV

Prefer CSV format? Download CRKN historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.

GET /api/tickers/CRKN/json● 200 OK (Live)

Tired of exporting to Excel? Track CRKN and analyze your portfolio locally with Pocket Portfolio.

Start Free — Local First
{
  "symbol": "CRKN",
  "timestamp": "2026-03-09T08:57:08.614Z",
  "price": 0.25,
  "change_24h": 24.999999999999993,
  "history_sample": [
    {
      "date": "2021-01-04",
      "open": 6750000,
      "high": 6763500,
      "low": 6480000,
      "close": 6480000,
      "volume": 0
    },
    {
      "date": "2021-01-11",
      "open": 6750000,
      "high": 6750000,
      "low": 4792500,
      "close": 4792500,
      "volume": 0
    }
  ]
}
💻

Import via CLI

Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.

npx pocket-portfolio --import CRKN
🛡️

Need to archive this data?

Don't rely on ephemeral endpoints. Automatically sync CRKN.json updates to your private Google Drive for backtesting and compliance.

Enable Sovereign Sync

Includes unlimited API calls & historical CSV exports.

Dataset Specifications

  • Format: Standardized JSON (OHLCV)
  • Frequency: End-of-Day (EOD) + Real-time delay
  • Adjustments: Split-adjusted, Dividend-adjusted
  • Source: Multi-provider aggregation (AlphaVantage, Yahoo fallback)