There is an easy but difficult solution to this problem. If you encrypt the inp file (and timestamps) with a timesensitive generated key that is received outside of the source, the source need only contain the encryption algorithm and not the key, so the source could be distributed perfectly along with a link to a website that returns timesensitive keys. (the algorithm that creates the keys does not need to be distributed (NOR implimented by any marper) but the code that recieves the key can be distributed.)(posted 9537 days ago)This is difficult because the program must connect to a website before and possibly after a mame game inp file is recorded. Which means if you're not online you might not get a authenticated timestamp for your awesome recording. Mark if you're interested and i'll email you how this can be implimented and how to close certain security holes.