Cool data embedded in the Bitcoin blockchain / Text by Ciro Santilli 37 Updated +Created
Here are some exceptionally interesting text inscriptions that are not mentioned in other sections:
TODO:
  • 55a5d0c09ad5535711d649fdab394add3bb6e50cc2c49920cf0cb758ff0b69e8 via cryptograffiti.info contains what seems to be a ASCII table tracking train movements? Maybe from a train lover? But also curiously, it is GPG signed:
    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA256
    
    time    direction    # covered    #uncovered    notes
    11/11/2013 6:31pm    E    4    1    csx 6243
    11/19/2013 4:46pm    E    3    0    csx 6215
    11/19/2013 5:44pm    W    4    0    Amtrak
    11/21/2013 4:05pm    E    0    0    csx 6206
    Interesting.
    86c1b7bd8bbdd8903355a8f6a408616621fd2ea4321b9aced778f388afe0b244 has something similar.
  • cc38d740dc1999a803dbba0c48a82af994861e0767f6bcd7d6ceebe4e66b4678 via cryptograffiti.info contains a pipe dream technical proposal idea entitled:
    Attack-resistant decentralized time and location services via Nakamoto chain consensus.
  • 5d9ef37e6beea5342ce1cb2681a7b465a542394aeda2b1e1fed00fab44b17833 via cryptograffiti.info contains a test of every character from 0 to 255, e.g. some of the readable characters are:
    65:              A
    66:              B
    67:              C
    68:              D
    69:              E
    70:              F
    71:              G
    72:              H
    73:              I
    74:              J
    75:              K
    76:              L
    77:              M
    d5f6614b4e3bdc611c8ad15f158163e48e1a1298ea5f5f9832ada8db6e2dd4b2 has something similar.
  • 0f96b2f6e3c4f4b6319efbafd2e7148d507b260b4d7914766e79aec7d9ac9574 via cryptograffiti.info has a long-ish message that looks like a software release note, not sure what it is about:
    Truecrypt 7.1a
    ==============
    
    2015-07-19
    
    I am setting the filesizes and checksums of the last Truecrypt version (7.1a) in stone.
  • 206a0edb11ba0677248709d9bc5210b35e8a03710d9bb19c6f1e4e254bf21f5e via cryptograffiti.info has a letter to AGI:While cute, the author clearly underestimates the magnitude of singularity!
  • cdbeb50c11b788fa4e67e00fb2e2607b129492a4a38bed0a9e31443a42e272a4 via cryptograffiti.info contains a semi-philosophical text that starts with:
    When in the course of cosmic evolution,
  • b55c3312ceeeb4ab422b658f5f4d5884775a498ddde6a527fca7b67752e1b044 via cryptograffiti.info contains some wedding vows starting with and GPG-signed:
    Zachary Thomas Smith,
    I give myself - Jenna Marie Vaziri - to you, to be your wife, your best friend, and your home - just as you are to me.
  • 3620da027df2e2e34ac9abe0123dcd7217fc5b8dec9921cbae258c640c7a6591 via cryptograffiti.info contains a neatly formatted UTF-8 ad with a link to: bitcointalk.org/index.php?topic=1033773.0
    ╭───────────────────────────────────────────────────────────────────────────╮
    │    B&C EXCHANGE:  A decentralized cryptocurrency exchange for everyone    │
    ┝━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┥
    │             https://bitcointalk.org/index.php?topic=1033773.0             │
    │                                                                           │
    │ B&C Exchange will be an open-source decentralized exchange that completes │
    │ cryptocurrency  trades between  users by utilizing multisig signers  that │
    │ compete for blockchain  rewards based on their effectiveness and honesty. │
    ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
    ┆          ▷▶▷▶    There are 10 days  left in the auction!    ◀◁◀◁          ┆
    ╰───────────────────────────────────────────────────────────────────────────
    The thread links to bcexchange.org/ which is dead as of 2024.
    f93e128c59b357ca2d1b256eb1c4d991c488da460527ca0898dc789210073bd2 has another one:
    ┏━━ UTF-8 is coming to CryptoGraffiti.info!!! ━━┓
    ┠╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┨
    ┃ I love you.                          Σ΄αγαπώ. ┃
    ┃               Ma armastan sind.               ┃
    ┃ Aš tave myliu.               Mä rakastan sua. ┃
    ┃                 Я люблю тебя.                 ┃
    ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  • 140562ceb42fc8943fa52ccc0ddbb11ca2d88dae9b5240d7a4b46864538c515aTODO understand this part:
    The "Address" you see above is more than a bitcoin address? For example, the web address to this 
    
    reddit thread is: https://www.reddit.com/r/Bitcoin/comments/3cdxep/reddit_on_the_blockchain_test/
    
    Which converts to the bitcoin address of:
    12uPLj6PSz6ULnZi1jXo7Ch1Je1SuqxRcE
    
    How? Because any text, like a web address, can be converted into a bitcoin address.
    
    www.reddit.com = 1MZCEUCtyJCDkNSLYbPVvAgf9V3CsEw3t
    www.google.com = 1JEZLaFciACHDEMVd3RXZzPmGcsWEwYQLr
    www.voat.com = 1JvCp9X5Bvvt2kz3EqP5ppkzX62sKgKbqr
    www.paystamper.com = 14wgeaWz2rKax8iVSWNFSrSsAYNeGyNdkt
    Duriel@paystamper.com = 1HcuhfTAiQCt6KdMG2rZLXsTcKYj9nLDhS
  • 940f41f5cc96182c1392c239d7570f94bd524e141ca0a88fdb154bd817049f83.bin via cryptograffiti.info contains some links to profiles controlled by a "Daniel Michael Abraham" www.linkedin.com/in/daniel-abraham-9432a798/. Other messages by him:
    • 3d39024fa0cddfc529d4a41501df7a076f5bcf9a7a43f88f54a717e6df7f4770
    • 088ebf7ffdef96b8fcac7eafa2ff6d04f295ea24f159e1ce4b7d47ed7b91b1f9
AMD GPU by Ciro Santilli 37 Updated +Created
Cool data embedded in the Bitcoin blockchain / Mt. Gox' shutdown by Ciro Santilli 37 Updated +Created
Mt. Gox was the first Cryptocurrency exchange in existence, and when it shutdowon in Febrauary 2014 because the website was crap and they got hacked, some people were not happy at all about their missing funds!
tx 0540b5dda23ee870330c6b1e18a88c592cf8d847c47f1dc1d5328f46115b12b3 (2014-02-25)
2014-02-25: The day Mt.Gox shut down. Farewell, may even you rest in peace!
tx c00a4a04905a2e8d8dee8a768165aa6bdf842413a8a648462a6349db89cd77f2 (2014-02-27) has an ASCII art of a seal, TODO understand meme:
        o
      / |
      | \
  .   |  |
.'\`  | \|
  | \_/ \ \
  \____/\/
<3 You Seals!
There are also a few Base58 messages referring to Mt Gox, the nicest and most expensive one being to burn addres:which as of 2025 holds 0.014537 BTC burnt on:
Many of these transactions also contain other quick messages, e.g.:
OurBigBook.com / Desired social impact by Ciro Santilli 37 Updated +Created
Crush the current grossly inefficient educational system, replace today's students + teachers + researchers with unified "online content creators/consumers".
Gamify them, and pay the best creators so they can work it full time, until some company hires for more them since they are so provenly good.
Destroy useless exams, the only metrics of society are either:
  • how much money you make
  • how high is your educational content creator reputation score
Reduce the entry barrier to education, like Uber has done for taxis.
Help create much greater equal opportunity to talented poor students as described at free gifted education.
Give the students a flexible choice of what to learn, which basically implies that a much large proportion of students get a de-facto gifted education.
In some ways, Ciro wants the website to feel like a video game, where you fluidly interact with headers, comments and their metadata. If game developers can achieve impressively complicated game engines, why can't we achieve a decent amazing elearning website? :-)
File signature by Ciro Santilli 37 Updated +Created

Pinned article: ourbigbook/introduction-to-the-ourbigbook-project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact