It seems that the leak originated from 4chan [1]. Two people in the same thread had access to the weights and verified that their hashes match [2][3] to make sure that the model isn’t watermarked. However, the leaker made a mistake of adding the original download script which had his unique download URL to the torrent [4], so Meta can easily find them if they want to.
I haven’t looked at the linked content myself yet.
Tiberium at HN seems to think not. Copied and lightly reformatted, with the 4chan URLs linkified:
I haven’t looked at the linked content myself yet.