Topic: ARG Puzzle with 3.5 BTC Private Key Prize, Game Over - page 55. (Read 99540 times)

Just to point out, that's not bitcoin protocol at all. Bitcoin protocol uses the sha256 of the binary form of the inner sha256, that's the hex form. It's not Bitcoin protocol at all, just similar. OP misunderstands how the hash functions work in Bitcoin.

echo -n "fireearthairetherwater" |openssl dgst -sha256 -binary |openssl dgst -sha256
cc005b04a217950a39b98d01f331a5159b002c9624c22687f3b163d346eac5e7

Edit: file named Algo.jpg

thinking about an algorithm ... thales' thereom? (no algo )

And the 3.7z ?

Seem we might not be finished over here either...

hash confirmed as key for 2.7z.
Contains two files:
3.7z and Algo.jpg

bahhh.. i had the order of the elements wrong.
Its sha[sha[fireearthairetherwater]]
a175b1d5f92f57acc6920f3e73869e0b154b8dd97249c84224eefbdd6bde2f77

means 2.7z is independent of Again.7z ?!

Seem we might not be finished over here either...

*Hint for "Onion.7z":

- Match the identified platonic shapes to their designated elements in the correct order. Always apply Bitcoin protocol.

space + odyssey = Space Odyssey ?

...
Hackers blow through those countermeasures. The Xbox was cracked by a kid from MIT who wrote a best-selling book about it, and then the 360 went down, and then the short-lived Xbox Portable (which we all called the “luggable”—it weighed three pounds!) succumbed. The Universal was supposed to be totally bulletproof. The high school kids who broke it were Brazilian Linux hackers who lived in a favela—a kind of squatter’s slum.
Never underestimate the determination of a kid who is time-rich and cash-poor.
Once the Brazilians published their crack, we all went nuts on it. Soon there were dozens of alternate operating systems for the Xbox Universal. My favorite was ParanoidXbox, a flavor of ParanoidLinux. ParanoidLinux is an operating system that assumes that its operator is under assault from the government (it was intended for use by Chinese and Syrian dissidents), and it does everything it can to keep your communications and documents a secret. It even throws up a bunch of “chaff” communications that are supposed to disguise the fact that you’re doing anything covert. So while you’re receiving a political message one character at a time, ParanoidLinux is pretending to surf the Web and fill in questionnaires and flirt in chat rooms. Meanwhile, one in every five hundred characters you receive is your real message, a needle buried in a huge haystack.
...

just thoughts :
space + odyssey = Space Odyssey ?
if "2.7.1980 09:02:18 timestamp: 331369338" maybe "2147129 timestamp > January 25, 1970 > M*A*S*H premieres"
 : )