\Image[https://web.archive.org/web/20220116140433im_/http://static.righto.com/images/bitcoin/bitcoin.jpg]
{title=`bitcoin.jpg`}
{description=
A bitcoin logo on https://www.blockchain.com/explorer/blocks/btc/123573[block 123573] (2011-05-13).

This is the very first ASCII string to show up at https://github.com/cirosantilli/bitcoin-inscription-indexer after only the <Genesis block message>.

This version of the image was just ripped from <Hidden surprises in the Bitcoin blockchain by Ken Shirriff (2014)>.

Reconstructing it should likely be a simple matter of copy pasting the ASCII <yEnc> encoding present in the two transactions from https://github.com/cirosantilli/bitcoin-inscription-indexer/blob/master/data/out/0123.txt#L11[tx ceb1a7fb57ef8b75ac59b56dd859d5cb3ab5c31168aa55eb3819cd5ddbd3d806] into a text file and decoding the <yEnc>, but after searching for 20 minutes Ciro couldn't find a working yEnc decoder on <Ubuntu 21.10>. How can a format be so dead, even after considerable extensive use in the <Usenet>??? It makes you think about life.

As mentioned by Ken, the logo is split across two transactions: https://www.blockchain.com/explorer/transactions/btc/ceb1a7fb57ef8b75ac59b56dd859d5cb3ab5c31168aa55eb3819cd5ddbd3d806[ceb1a7fb57ef8b75ac59b56dd859d5cb3ab5c31168aa55eb3819cd5ddbd3d806] and 9173744691ac25f3cd94f35d4fc0e0a2b9d1ab17b4fe562acc07660552f95518.

There appears to be nothing strictly linking the two transactions, besides that they are very close by and the only ASCII strings around back in those pre-infinite-spam days, as can be seen at: https://github.com/cirosantilli/bitcoin-inscription-indexer/blob/master/data/out/0123.txt#L11[], so you could just see both of them by eye.

Also the first one starts with:
``
=ybegin line=128 size=8776 name=bitcoin.jpg
``
and the second one ends in:
``
=yend size=8776 crc32=a7ac8449
``
so this is likely clearly part of the yEnc format for someone who knows it, and the filename `bitcoin.jpg` gives the file format.

They are not even in the same block:
* https://www.blockchain.com/btc/tx/ceb1a7fb57ef8b75ac59b56dd859d5cb3ab5c31168aa55eb3819cd5ddbd3d806 is in block 123573
* https://www.blockchain.com/btc/tx/9173744691ac25f3cd94f35d4fc0e0a2b9d1ab17b4fe562acc07660552f95518 is in block 123571
both from 2011-05-13. Also note that they ended up being committed reverse order, since you don't have a strict order control over the final blockchain.
}
{height=300}
{source=http://www.righto.com/2014/02/ascii-bernanke-wikileaks-photographs.html}

\Image[https://raw.githubusercontent.com/cirosantilli/media/master/v27sSra.jpg]
{title=v27sSra.jpg}
{description=
An image of a dozen people siting at a dinner table, with each person identified by a <Twitter> handle that was edited in.

This image is present https://github.com/cirosantilli/bitcoin-inscription-indexer/blob/master/data/in/0357.txt#L384[tx 4be3a833ee83b4ca7d157d60fbf7411f7528314ce90df8a844f855118bc6ca11 from block 357239] (2015-05-20), an input transaction.

It contains a base 64 encoded image:
``
v27sSra.jpg

/9j/4AAQSkZJRgABAQEASABIAAD/2wBDACgcHiMeGSgjISMtKygwPGRBPDc3PHtYXUlkkYCZlo+A
...
TAkBaMxbbhuYXGDMyXw/MIV84IqrE//Z
...
``

By manually copy pasting that into a file `v27sSra.base64` we can obtain the image with:
``
base64 -d <v27sSra.base64 >v27sSra.jpg
``
The exact same content appears to be present on the next input transaction 56d23a230042c094bc54bb72fc4c10a3f26750030b9927994e741d3689f5c09e on the same block.

<Google reverse image search> leads to https://freedom-to-tinker.com/2015/05/21/the-story-behind-the-picture-of-nick-szabo-with-other-bitcoin-researchers-and-developers/ The story behind the picture of <Nick Szabo> with other Bitcoin researchers and developers by Arvind Narayanan (2015), in which Arvind (https://twitter.com/random_walker[@random_walker]) who attended the meeting clearly lists all names and handles, and talks about the background of gathering of Bitcoin devs that happened in March 2014. The article also contains a higher resolution version of the image uploaded to the blockchain.

It also links to a popular <Reddit> thread that contains the image from May 2015: https://www.reddit.com/r/Bitcoin/comments/36hfu4/pic_coredevs_having_dinner_with_nick_szabo/[]

<Googling> `v27sSra.jpg` leads to https://bitcointalk.org/index.php?topic=1061926.220;wap "New York Times identifies Nick Szabo as Satoshi Nakamoto" which links to https://i.imgur.com/v27sSra.jpg so this is a  <Satoshi Nakamoto>-real-identity thing.
}
{height=500}


Cool data embedded in the bitcoin blockchain/custom encoded images of unknown source

ID: cool-data-embedded-in-the-bitcoin-blockchain/custom-encoded-images-of-unknown-source