For your BuyUcoin account, the necessary documents required for KYC are mentioned below:

1. Aadhaar (UIDAI) Card

2. PAN Card

3. Selfie (Recognizable face along with Aadhaar Card, PAN Card, and a note mentioning the date of the photo)

Kindly refer to the following article to know the KYC verification process:

How to verify KYC