David Oranchak's video: Let s Crack Zodiac - Episode 6 - How was the 340 made

In early December 2020, we discovered the solution to the Zodiac’s famous 340-character cipher. But how did he make the cipher? I tried to explore that question in this video. I also explore the impact of the news of the solve, efforts to confirm the solution, and various interesting odds and ends about the cipher. Mailing list, comments, requests: doranchak@gmail.com Correction at 3:26: it's Ukraine, not Russia. Video Links: Collection of news reports: http://zodiackillerciphers.com/wiki/index.php?title=Compilation_of_news_reports_about_the_solution Nils Kopal: Cryptography for Everybody: https://www.youtube.com/channel/UC8_FqvQWJfZYxcSoEJ5ob-Q Kevin Knight: 3n+1 Conjecture: https://www.youtube.com/watch?v=PzFIg41Igqs George Lasry: https://scholar.google.com/citations?user=0Fb5oOMAAAAJ&hl=en&oi=ao https://www.linkedin.com/in/georgelasry zkdecrypto: https://code.google.com/archive/p/zkdecrypto/ Nick Pelling’s Cipher Mysteries: http://ciphermysteries.com Bill Briere: https://www.linkedin.com/in/codes/ Cryptologic History Symposium: https://cryptologicfoundation.org/what-we-do/educate/conferences/symposium.html Fritz Reichmann: http://www.zodiackillersite.com/viewtopic.php?p=83204 Daikon: http://www.zodiackillersite.com/viewtopic.php?p=39003 Scytale encoder/decoder: https://www.dcode.fr/scytale-cipher Cipher Explorer: http://zodiackillerciphers.com/cipher-explorer/ Zodiac Cipher Web Toy: http://zodiackillerciphers.com/webtoy/ AZDecrypt: http://www.zodiackillersite.com/viewtopic.php?t=3198 Jarl almost finding the solution: http://zodiackillersite.com/viewtopic.php?f=81&t=4805 Shawn’s Belli observation http://www.zodiackillersite.com/viewtopic.php?p=82822 Credits: Subscribe button https://www.youtube.com/watch?v=UaV7w4fMtFE Email animation https://www.youtube.com/watch?v=4WMt0w6bEc8 Postal footage https://www.youtube.com/watch?v=JbtQD452TdU Time capsule https://www.youtube.com/watch?v=YRWerw7i8Ao Scary wind https://www.youtube.com/watch?v=KNVoPBXCHeA Earth rotating https://www.youtube.com/watch?v=qailTbCEuuA Psycho shower theme https://www.youtube.com/watch?v=Me-VhC9ieh0 Light leaks https://www.youtube.com/watch?v=V1HrYQZFHoE Matrix rain https://www.youtube.com/watch?v=J2qDRJdTGow Nils https://www.youtube.com/watch?v=jpc6fvQU054 Kryptos: https://www.youtube.com/watch?v=CwdUwevayRU Transition https://www.youtube.com/watch?v=q1JB2uIpwL0 Chess board https://lichess.org/editor Chess background https://www.youtube.com/watch?v=yRbS56UFrSY Scytale: https://commons.wikimedia.org/wiki/File:Skytale.png Random text https://www.youtube.com/watch?v=yqyTXTSr5EE Mouse sound https://www.youtube.com/watch?v=fVblvdRT76E Light bulb https://giphy.com/gifs/animated-gif-motion-graphics-26BRAmywAN0PI0JyM Scissor sound https://www.youtube.com/watch?v=-H5TtjUtQOE Exclamation point https://giphy.com/gifs/3ov9k0ExnKPTAfbOww Beautiful Mind decrypt scenes https://www.youtube.com/watch?v=aLj8WCO-2QI https://www.youtube.com/watch?v=oAFDvO52cxI Always sunny? https://www.youtube.com/watch?v=_nTpsv9PNqo David Kahn, “The Codebreakers”: Unicity distance info from p750 Coffin Dance https://www.youtube.com/watch?v=j9V78UbdzWI Mac RAM https://favpng.com/png_view/ddr3-sdram-laptop-macbook-pro-mac-mini-ram-png/sXFRMMCZ #_=_ Old computers https://www.youtube.com/watch?v=OsHMaTJ9CX0 Enigma https://www.youtube.com/watch?v=mwFWMM9APLs Number animation https://loading.io/animation/text/ Server room https://www.youtube.com/watch?v=NeESf9aCZHQ Jim Dunbar and Melvin Belli https://www.youtube.com/watch?v=oTJI4VMu5Os TV static https://www.youtube.com/watch?v=rZhbnty03U4 Padlock https://giphy.com/gifs/mobile-phone-iphone-3og0IuymsB9sy0C2Vq Padlock sounds https://freesound.org/people/SpaceJoe/sounds/342704/ https://freesound.org/people/SpaceJoe/sounds/342702/ Goose by Gabrielle Genevieve https://www.artstation.com/artwork/WKGGmQ Goose sounds https://www.youtube.com/watch?v=6pbCr577RI0 Pop sound https://www.youtube.com/watch?v=3hPVv6boahw Gentle whoosh https://www.youtube.com/watch?v=sWj2WXr3ayw “Difficult Decisions”, music from ZapSplat.com Page turn https://www.soundjay.com/page-flip-sounds-1.html Server room sound https://www.youtube.com/watch?v=NeESf9aCZHQ Electrical switch sound https://freesound.org/people/joedeshon/sounds/364200/ Teletype sound https://freesound.org/people/stratcat322/sounds/169259/ Control knob sound https://freesound.org/people/Ninafoletti/sounds/256293/ Bombe sound https://www.youtube.com/watch?v=Hb44bGY2KdU Box open sound https://freesound.org/people/dkiller2204/sounds/422975/ Typewriter sound https://freesound.org/people/Nox_Sound/sounds/550340/ Plug sound https://freesound.org/people/marco_luzi/sounds/426689/ Button click sounds https://www.zapsplat.com/ Airplane sound https://www.youtube.com/watch?v=B-i4VRyNIKo Outdoor sound https://freesound.org/people/seth-m/sounds/269782/ Chess sounds https://freesound.org/people/BiancaBothaPure/sounds/437486/ https://freesound.org/people/Sunejackie/sounds/542394/