The fee/change address of cryptograffiti.info.
The first transaction of each Bitcoin block is called the "coinbase transaction", and it is magic as it does not need to point to a previous output script and have a valid input script as it serves as a Block reward for miners.
The input script of the Coinbase transaction can be anything, and this can be used as a Bitcoin inscription method.
Notable examples:
- Genesis block message
- Prayer side of the Prayer wars
Inscription added by Satoshi Nakamoto on the Genesis block containing:which is a reference to: www.thetimes.co.uk/article/chancellor-alistair-darling-on-brink-of-second-bailout-for-banks-n9l382mn62h wihch is fully titled:The "Alistair" was slikely removed due to limited payload concerns.
And it hints that one of Bitcoin's motivation was the financial crisis of 2007-2008, where banks were given bailouts by the government to not go under, which many people opposed as the crisis was their own fault in the first place. A notable related stab is taken at Len Sassaman tribute.
We can extract the image from the blockchain ourselves by starting from: blockchain.info/block-height/0?format=json.
From that page we manually extract the hash and that does contain the famous genesis block string:The JSON clarifies that the data is encoded in the
000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f and then:wget -O 0.hex https://blockchain.info/block/000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f?format=hex
xxd -p -r 0.hexEThe Times 03/Jan/2009 Chancellor on brink of second bailout for banksscript field of the transaction input:{
{
"script":"04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73"The extra where:
E (0x45 in ASCII) in EThe Times is just extra noise required by the script, we can break things up as:04ffff001d0104 45 5468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b7354isT- the
04ffff001d0104part just doesn't show up on the terminal because it is not made of any printable characters.
The initial
04 is OP_RETURN.TODO what is actual the meaning of the
ffff001d010445 part? @defango twitter.com/defango/status/1642750851134652417 comments:04ffff001d0104 is a hexadecimal string. It is commonly used in the Bitcoin network as a part of the mining process. Specifically, it is used as the target value for a block to be considered valid by the Bitcoin network.
Europium hydride (EuH₂) is a chemical compound composed of europium, a rare earth element, and hydrogen. It is part of a class of compounds known as hydrides, which are formed when hydrogen interacts with other elements. Here are some key points about europium hydride: 1. **Composition**: Europium hydride typically has the formula EuH₂, indicating that each europium atom is combined with two hydrogen atoms.
- medium.com/@chain.info1/the-mystery-behind-satoshi-tribute-donations-cf4ce28c56a1 The Mystery Behind "Satoshi Tribute" Donations by Chain.Info (2020)
This section is about partial implementations that are only able to read the blocks, ususally coming from Bitcoin Core, to interpret the data:
Is it mega fast? Nope
Does it work? Yup.
You can then interact with it via the Bitcoin CLI client.
These are commands that e.g. the Bitcoin CLI client can make to the server.
The commands can be listed with:and full help with:
bitcoin-core.cli helpbitcoin-core.cli help getrawtransactionFor example. to run the Bitcoin and then on another shell:
getrawtransaction command, first in one shell we start bitcoind:bitcoin-core.daemonbitcoin-core.cli getrawtransaction 75b431e0a8c4617ca8adefe593ba66aa30907742b6dc8772761bfe7edabd74b4 true Pinned article: 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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.
Figure 4. Visual Studio Code extension tree navigation.
Figure 5. Web editor. 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.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. 
- Infinitely deep tables of contents:
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