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A comment on Be careful what you copy: Invisibly inserting usernames into text. Parent comment

Re:Be careful what you copy: Invisibly inserting usernames i... by ksrm on Wednesday April 04, 2018 @08:12AM (#16753960)
The advantage of putting the (signed) full username in there is that you can demonstrate to a third party (like a court?) who is to blame. Just encoding a number for each user, or giving each user a different number of Es is deniable to a certain extent.
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Re:Be careful what you copy: Invisibly inserting usernames i... by scottmf on Wednesday April 04, 2018 @08:50AM (#16754182)
But such a simple system would make it easy for one user to frame another.

You would need a way of signing the username. Perhaps you could hash the user ID with a secret salt, and hide that in the text along with the username.

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