eKYC based on OTP for pm kisan samman nidhi yojna, will get you the 3 installment that central government provide to the farmers. Its a amount of RS 2000 for every installment and total of RS 4000 in a year.
So to avail the benefits of PM saman nidhi, you will need to update the KYC time to time.
You will have enter the aadhar number and an OTP will be sent to the registered mobile number.