Telegram Mini App Development

I'm looking for a Telegram mini app that can facilitate a slot purchase system where users can buy slots, with their payment directed to my wallet.

Key Features:
- Users should be able to buy slots through redirection to an external payment gateway.
- The payment gateway needs to be strictly Cryptocurrency.

Ideal Skills:
- Experience in developing Telegram bots and mini apps.
- Strong understanding and experience in Cryptocurrency payment gateway integration.
- Competence in providing secure and efficient transaction processes.

Please apply only if you have relevant experience and can handle a project of this nature.