# GCC Institutional Briefing · TrustChain Verification · 15 min with Ahmed Malik

> A 15-minute working call with Ahmed Malik, TrustChain Verification, Tokyo. By the end you will know whether your file is ready for GCC institutional review, what the friction points are, and what to fix before any introduction happens. For founders approaching UAE or Saudi capital. Fund managers with portfolio companies raising internationally. Advisors who make GCC introductions. uxelevation.com/ahmed

- Host: Ahmed Malik
- Duration: 15 min
- Location: MS Teams
- Host time zone: Asia/Kolkata
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/ahmed-malik-q9izq2/forensic-briefing
- Event type id: 5263422

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5263422&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 5263422,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `notes` (Additional notes), `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.