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Exporting Data

CalcBridge allows you to export workbook data in multiple formats with optional cryptographic signing for audit trail compliance.

Export Formats

Format Best For
XLSX Full workbook with formulas and provenance
CSV Data import into other tools
PDF Reports and presentations
JSON API integrations

Creating an Export

Via UI

  1. Open a workbook
  2. Click Export in the toolbar
  3. Select the desired format
  4. Configure options (sheets, provenance, password)
  5. Click Start Export
  6. Download when complete

Via API

curl -X POST "https://api.calcbridge.io/api/v1/exports" \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "workbook_id": "your-workbook-id",
    "format": "xlsx",
    "include_provenance": true
  }'

Export Options

Option XLSX CSV PDF JSON
Select specific sheets Yes Yes Yes Yes
Include formulas Yes No No No
Provenance signing Yes No No No
Password protection Yes No Yes No
PII redaction Yes Yes Yes Yes

Provenance Signing

When enabled for XLSX exports, provenance signing:

  • Computes a cryptographic hash of every cell
  • Signs the hash with HMAC-SHA256
  • Embeds a manifest in the file
  • Enables downstream verification

Why Use Provenance?

Provenance signing creates a tamper-evident record. Anyone receiving the file can verify that the data has not been modified since export.

Verifying an Export

To verify an exported file's integrity:

  1. Go to Exports in the main menu
  2. Find the export job
  3. Click Verify to confirm integrity

File Expiration

Export files expire after 24 hours by default. Download promptly or re-export when needed.