Retrieve aggregated transaction volume data from BigQuery.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Start date for the query in ISO 8601 format (YYYY-MM-DD). Defaults to 1 month ago.
"2025-01-01"
End date for the query in ISO 8601 format (YYYY-MM-DD). Defaults to current date.
"2025-12-31"
Volume data grouped by date.
Array of volume data grouped by date.