11B-X-1371

Rare card · No. 67992

11B-X-1371 is a 2015 viral video sent to GadgetZZ.com, the Swedish tech blog that publicized it. The black-and-white video is two minutes in length; its title came from the plaintext of a base64 string written on the physical DVD. It depicts a person wearing what appears to be a plague doctor costume walking and standing around in a dilapidated abandoned building, with a forest visible through former window openings in the wall behind it. Accompanied by a soundtrack of loud, discordant buzzing noise, the masked figure holds up a hand with an irregularly blinking light. The film did not have any credits or claims to authorship. Messages, many in commonly used ciphers and encryption systems, have been found hidden in the video and its sound spectrogram, as well as images of tortured and mutilated people. Most of the messages have been decoded by participants in an ongoing Reddit thread, and the images sourced to notable murder investigations such as the Boston Strangler. They have been interpreted...

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