Old posts where the true uploader is someone other than the "Uploader" shown in the post information (either albert or MD Anonymous). From a brief period where uploading to Danbooru didn't require registration.

• id:<=115614 anonymous_upload: the first version's creator is "anonymous" (or null in the post versions API)
• id:>=124516 anonymous_upload user:MD_Anonymous: the first version's creator is "MD Anonymous"
• id:>=506892 anonymous_upload: the first version's creator will be the username of the true uploader (e.g., 715458.1)

Don't add this to any new posts.

See also

• about:danbooru: a timeline of Danbooru's history
• user:albert -anonymous_upload: posts that are assumed to have been uploaded by albert himself

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