I'm working on an experiment ( explained as follows ), and need to figure out the chemical process happening. Can someone give me a reaction and explanation?

A voltmeter/ ammeter is hooked up (red end to brass, which is the anode, and black end to titanium, which is the cathode) and outputs a voltage power to the system. The brass and titanium are placed in a cup of copper sulfate solution. A reaction occurs, releasing bubbles and heating up slightly. After being left for a while, copper forms on the surface of the titanium plate.

It is a chemical process called electrolysis, which is a type of electrochemical reaction. When a electrical voltage is applied to the brass and titanium electrodes submerged in a copper sulfate solution, a reaction occurs. The copper ions in the solution are attracted to the negatively charged titanium electrode (cathode) and gain electrons from it. As a result, solid copper is formed on the surface of the titanium electrode. The brass electrode (anode) releases positively charged copper ions into the solution. These ions combine with the sulfate ions in to form copper sulfate. The reaction continues until all of the copper ions in the solution are gone, and copper has formed on the surface of the titanium electrode. The bubbles that are released during the reaction are hydrogen and oxygen gas, which are formed when water is electrolyzed. The slight heating is because of the resistance of the solution to the flow of electricity.