During cultivation season started there used be a big que. it used to take 2-3 days to generate latest RTC which was needed for any subsidy. Now farmer can generate RTC from anywhere.
Land buyers can check if the land is under litigation.
I am sorry If any other states have this system, I am unaware. I heard TN has this facility unroftunately I dont know the URL.
In Karnataka this facility was there from last 4 - 5 years i think.
I have used it 3 years back to check my khata transfer verification.
In Andhra , they used to have the website, unfortunately the cash struck corrupt government has blocked that website and is directing every one to mee seva to make money.So unfortunate.