Forum:When using ritual search cards do i havd to reveal the card when i could just have it varified by a judge?

i went to a tournement last thursday and was in a semi finals match where i was using my ritual deck and played manjuto search for a ritual demise my opponent called that i had to reveal to him wat ritual card i pulled i argued that no where on the card did it say i had to as opposed to other cards like witch of the black forest which say i must reveal to my opponent wat card i pull he then proceeded to say that i still had to getting others involved to back him up saying that there was no one of knowing if i was telling the truth about the card i pulled but i argued i can simply have a judge varify my card choice rather than give my oponnent a heads up on the card that i chose letting him act upon the knowledge that i just pulled a demise to my hand and not to play anything good on the metadata that i was just going to wipe it. so i wanted an officail ruling on this because it seems to me like he was just trying to get an unfair advantage to my strategy. i understand honor plays which i was ok with but this was a tournament match and in a tourney things like knowing what is in your opponents hand can make or break your chances of victory and i wont willing give u means of my lose by giving u heads up of my cards when the card i used doesnt even say i have to.