To verify the veracity of spirit communication you would wish to ask questions which you would normally not be able to answer yourself through your own conscious memory of experience or learned source (books). You would seek an answer which could not be formulated in accuracy from your own mind, but would have to come from an external perspective and source of experience you have not had. The question you pose must be adequate to facilitate an answer in return which can be verified by other people or professional sources in the field of which you are inquiring. So, if you are asking a question about space, you would ask something which could be verified by an existing reliable source such as NASA, or other space research facility. Or more simply done, have another person sit with you during your channeling and ask your spirit source something about that person which only that person could verify. This may come in the form of words, of visions or of sensations in your own physical organism.
You will also wish to look out for synchronicities and other signs of verification. You may ask for example, a sign or synchronicity to be placed before you in your day ahead which cannot easily be dismissed or interpreted as your own energy doing it. For example, if you are channelling a loved one, ask them to place something in front of you during your day which holds significant personal meaning to do with that spirit or their physical life. Do not make it too difficult for them by requesting to hear their favourite song, or something difficult to facilitate in such short notice. Ask for a sign, but be passive in your approach of your day when expecting it. Do not go looking for it at every turn, just allow it to capture your attention by itself in its own way.
Understand, just because you may appear to be channeling a spirit, and that may seem very genuine, it is not to say they are contacting you from the higher realms of love and light within the halls of information; for they may actually be Earthbound – which they presume from their perspective is what the spirit world is. They may actually be a life form from your own universe, or one parallel in the same physical space, but interact with you as if they are from the spirit world – when it is simply you cannot perceive them. Just because you cannot see something, do not immediately presume the source to be from the spirit world of love and light. No genuine spirit in the spirit realm of love and light will ever claim some grand persona of distinction or power, and will never claim to be an ascended master or any such hierarchical status; for in the planes of light there is no need for such distinctions. In fact they cannot exist there for one dissolves such attitudes of mind and personal ego before they can access true wisdom and One-ness.
Do not be afraid to ask your channeled source for verification, they are already aware and prepared that you will ask this. In fact they will often be enthusiastic to facilitate some form of proof of an afterlife for you, which would then relieve some of your own fears in the process.
What you must remember about spirit communication is that the information is only as accurate as is the human instrument in their efficient receptivity, and as is the spirit communicator informed within their present state of consciousness, regardless if they are of the spirit world. Even those in spirit can retain bias and adopted perspective in their pursuits and personas. This will help to explain why information from the spirit world can be different, for different beings have different accesses of information, as well as different approaches of obtaining information. An extraterrestrial guide, or a terrestrial animal guide for example will have a different perspective and approach of information than a human guide, because they will be coming from a different origin of perspective, and may often times have different value systems.
As with all sources, including this one you are reading now, you must scrutinise with utmost diligence of your inner heart council and believe only what your heart knows to be true.