This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Then what is the point of hashing the data? Just use an UUID.
Anyway, this is all pointless bike shedding because the activity needs to be associated with the actor, as it can only be accepted if the signature can be verified.