Before publishing promotional material of my first indie game I wanted to mark all my artwork with a legally valid timestamp.
There are two ways I know to do this:
1 go to a sollecitor/lawyer and pay for them to certify the document 2 use an online webservice to mark any given file/folder readable to the service
Anyone has already done this and if yes how (e.g. which website have you used? which type of solecitor have you contacted? etc..)?
I am doing all this because I have prepared a kickstarter video that I wanted to publish in these days to ask for some additional funds to complete my game and, as it contains sequences of the game, I am at the same time worried about publishing it (somebody might copy the characters as I say in the video that I would like to do also a comic book series based on those characters). I guess that "eCO" (or something similar) becomes a must in this case right?
PS: I know that there is always the good old "send yourself a mail with a stamp and a date" but is not very strong as proof.