All my sentences can be used without attributing me in any form, and they are additionally (alongside with Tatoeba’s CC-BY license) available under the terms of CC0 license, if possible.
I try to use the Tatoeba's new CC0 feature to mark my new sentences as CC0. However, my old work is CC0 too (but my sentences might be derived from other people's, and then those original sentences' licenses might apply).
If the sentence is not marked as CC0 in Tatoeba, *my* work is CC0 anyway, but
(a) it might be CC-BY because Tatoeba's interface doesn't yet allow marking translations as CC0,
(b) it might be CC-BY because it's based on someone else's work.
It is up to you to check these things.
My sentences can (and should) be changed without waiting for my answer.
I try not to add or translate sentences with the names Tom and Mary.
My other accounts: Demetrius, Demetrius3, Demetrius4.