# Partner with us with Dar Blockchain

> Whether you’re a blockchain foundation looking to grow your ecosystem, a company exploring Web3 adoption, or an investor seeking strategic opportunities in the Middle East and Africa, this call is the starting point for meaningful collaboration. In this 30-minute session, we’ll explore how we can work together across our three pillars: Ecosystem Activation & Growth: Launch developer programs, hackathons, and community initiatives tailored to your project’s needs. Strategic Services & Consulting: Build, scale, and deploy blockchain solutions with our expert team and proven track record across leading chains. Venture & Innovation: Co-create new products, incubate startups, or explore investment opportunities in our venture studio. Our team will review your goals, share relevant success stories, and map out the most impactful ways we can collaborate.

- Host: Dar Blockchain
- Duration: 30 min
- Location: Cal Video
- Host time zone: Africa/Tunis
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/darblockchain/30min
- Event type id: 3527199

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3527199&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": 3527199,
  "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.