The original screenshot & seed of the Minecraft "Skull on Fire" painting has been found! [Minecraft@Home]

Not even a full week after finding the pack.png seed, we present you with yet another discovery!
The seed of the world displayed in the background of Minecraft's "Skull on Fire" painting has been found!

And along with it, we're also releasing a never-before seen image that the artist, Kristoffer Zetterstrand, generously shared with us. This is the original screenshot he took on October 12th 2010 at 13:22:49 UTC+2 for the background in his painting!

I suggested the idea of finding this seed on our Minecraft@Home Discord server in august, because I noticed that there was actually believeable Minecraft terrain visible in the original painting. Still, we didn't think it would be possible to find the seed using just the painting, so I got in contact with the artist (Kristoffer Zetterstrand), and asked him, if he still had anything that could help us out. And we got really lucky! He replied on August 21st 2020 and shared with us the original screenshot he used for his painting, as well as some additional details & other cool stuff (linked at the bottom).

We started working on it right away alongside the pack.png project. We did a lot of research on it, built the recreation, and we were almost ready to run the final code to find it, but in the end, we actually got beaten to it by a guy named andrew_555#5879 (Kminster), who (based on some of the stuff we already figured out), managed to find the seed himself using his own very clever code. He was then kind enough to share his discovery with us on September 10th 2020 at 4:48PM UTC in the Minecraft@Home Discord, after which we scrambled to get a reveal out as fast as possible.

Seed: -1044887956651363087 or -6984854390176336655
These 2 seeds are exactly the same as far as the game considers it.

Version: [JAVA] Alpha 1.1.2_01 (or earlier)

Coordinates:
X=-249.65
Y=91 (92.62 eye pos)
Z=-29.04

If you need help with loading the seed, replicating the screenshot, or just want a world download (even for 1.16), read more here: https://pastebin.com/fzAY9ES4

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Detailed documentation of this project, with everything that we did, and additional details:
https://docs.google.com/document/d/e/2PACX-1vS8I4nLHEVqT3xuq0dtjCLkt_x1gEnCWfFt4KFta0Gck6Vin1gfmZTcnuBXs6Ej8m-2Z-Orj1cKZrmL/pub

Album with all relevant pictures, and also some extra never-before shared images by Kristoffer:
https://imgur.com/a/Fpgxx3n

Our reveal video: https://www.youtube.com/watch?v=d8XSBtRIWD0

Credits to everyone who worked on this:
https://docs.google.com/spreadsheets/d/e/2PACX-1vTAPEH_2-syE0pqe5wFzFJOW2jtd8fcdT5fxv3wtdawT9GzfvHXQY-cJlpBTPlyfGaGnvFx5w3GIUIR/pubhtml