ADVENT CALENDAR PUZZLE 19

Don't let your memes be dreams!

PUZZLE SOLUTION

Solvers

user first solver also solved
John Galt#0295 6,7,8,9,10,11,13,14,17 all but DAY2
zert#1398 1, 2.1, 3, 4, 5, 16, 18 ?
Mojo#7167 2.2, 15
Arksun#0694 12,19 3,4,11,17,18
eric#4970 1-4,6,9,11,17-19
SantaCollector#4527 4,6,10-14,16,19
Kron#0582 3,4,11,13,19
Rodrigues#3798 3,4,6,11,13
يشتختخجح#2095 2.1,2.2,4,13
I'm into me#1274 17,19
Vagante#8108 3,4
jiaoshogou#1267 4

Learn Crypto With BanFam Puzzle

Solution:

  1. Reversed Factorial: factorial 19*3 in hexadecimal has 64 characters, reverse it.
  2. Hidden Chess (x2): Kavalanche chess game: 32 moves, two seeds. One seed for white's moves: replace G by 0 and H by 9 (the only missing numbers in chess notation) and add 1 if there is a check. Black seed has each move spelt backwards.
  3. Color Hex Codes: Take each pixel color in hexadecimal, get a 64 hex seed.
  4. +19 sequence: 19+19=38, keeping adding 19 eventually gives 437, concatenating all results has length 64.
  5. Genesis Public Key: The Creation of Adam (BANANO style) hints at the genesis. The 'source' of the first block is the seed.
  6. Monkey Talks: The logo hints that the first part of the seed in on MonkeyTalks
  7. hex(index) + F" 23 words, last two are not valid. It's not a mnemonic, taking the BIP39 word indices in hex gives 3*21= 63 hex characters. Pay Respects = press 'F'
  8. #la-jungla: 24 mnemonic words in spanish
  9. hex(19^60): The seed is the hexadecimal value of 19 to the power of x, where x is the value that gives 64 characters.
  10. page.zip: The image of a zip folder hints at a zip file: change the html extension. Hover the image with the mouse to see the image title is '2+2'. The zip passwor is thus 'benis'
  11. PDF Barcode: Scan this PDF417 barcode to get the seed
  12. Hexadoku diagonal: Solve the hexadoku, to extract the right 64 chars, choose the aesthetically pleasing diagonal mae by 4x4 blocks
  13. Discord Discriminators: Those are Discord names, taking the four digit discord #dicriminator give the 64 hex seed
  14. Flipped page.txt: The icon for a text file is upside down, reverse the html filename and use the .txt extension. The file comtains upside down BIP39 words.
  15. YouTube Reply: Find the YouTube video by ziz, the last answer to the first comment is a mnemonic
  16. π: 64 digits of Pi
  17. Second Draft QR: Change the '19-17-1-copy.png' filename to get the other image
  18. Sorted Lengths: Sort the number by length to get the right order
  19. Troll QR: Wait 19s and scan