I am very sorry about that please disregard my earlier post I was not meaning to cause any problems. Yes you are 100% right wilykat from the EverDrive forums deserves all the credit for saving this over 15 years ago and uploading a completely legit and unmodified mew.
On a side note since we all Love mew so much.
I did some poking around in a hex editor and also used @Metropolis pokemon editors. I found out and noticed if you use the screen shots for the stats and create a mew with all the same stats, IV, trainer name, character, ETC and make it match EXACTLY and then same it a s pkm file that the mew you just created this way and the legit downloaded mew match byte for byte in a hex editor. I also used the editor to port it to gen 2 and 3 I am not sure the algorithm it used to great the Hidden id on gen 2 or 3. but I noticed that the hidden id changes if you use mew at all to battle, teach moves or level up that the hidden ID changed when you convert him to other gens.