Yes, E-ticketing helps to reduce corruption because It does not consider Middleman, helps to reduce black marketing through which he earns black money, which goes to some employees. An official will not have a percent chance to make any profit of their own as there is no scope for earning any commission from that person.
We can have a copy of the printout which helps in the form of Proof of making a payment through the Internet. And there is no chance of making a fool. The payments are done through net banking and the money is taken from their respective bank accounts only.