Cool data embedded in the Bitcoin blockchain AtomSea & EMBII by 
Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16"AtomSea & EMBII" refers to an upload system for various media types includeing text, images, HTML pages and audio.
The name "AtomSea & EMBII" is a reference to the online handles of its creators. That string appears to be added as padding in the protocol and is therefore visible repeatebly in the blockchain, though it is sometimes cut up a bit. The following online profiles of the creators feel authentic:
Tried saying hi to them at: twitter.com/cirosantilli/status/1382080760774033415 and they replied: twitter.com/AllenVandever/status/1563964396656812034
The feature-set of their protocol is impressive:Basically they've created a fully descentralized Bitcoin-based social media. Their system is basically a sligly more clunky superset of Ordinal ruleset inscriptions, just way older and way less known for whatever reason.
- various media formats:
- multipage setups:
The Mahabharatabitfossil.com/0618f12af65a4e82f8e7b41f8578721dfeb109e9a73ff71aebdbc982696e3720/
Figure 1. Illustration for The Mahabharata inscription. - image galleries: bitfossil.org/ae8d3b46b934bedc363e11abe8c8607171994470957c286274f699a0b3a9bbd7/index.htm
- audio:
Spock_Live_Long_And_Prosper.mp3bitfossil.org/1bc87dbff1ff5831287f62ac7cf95579794e4386688479bab66174963f9a4a0c/index.htm
- social fetures:
- author photo below post via signture! bitfossil.org/738ab32bf82e3e0d4d2b29e40ad194cbbef6685d0116e94371e3cef4992349c8/index.htm (testnet) See the
SIGNED BYwith EMBII's photo! This feature was added in January 2015[ref]- For example, this lists the buy and sell orders for Figure "
YellowRobot.jpg": p2fk.io/GetObjectByAddress/17mdB8cVCQVhBi46bF43JpniZ4DAgE3JjH?mainnet=true&verbose=trueThe NFT system was retroactively added on top of signatures, it didn't exist at the time signatures were added. The first listing was made on December 2023[ref]:Inscriptions without signature such as those from before signatures were added can be claimed by the first person who claims them without any cryptographic proof[ref]:unsigned URN can be claimed and traded by the first who try they are basically free for all public domain
Figure 2. . Source. tx 4c7d8f6e7082a30d2d2d07c47ab462ea389415f4b95559106ff5f83f2bca8c82 (March 2015) seems to have a summary of the system. It shows in particular the cross-blockchain mechanism that mad EMBII implemented.creation.jpg
- sending messages to other people. TODO example.
- voting. TODO example.
- author photo below post via signture! bitfossil.org/738ab32bf82e3e0d4d2b29e40ad194cbbef6685d0116e94371e3cef4992349c8/index.htm (testnet) See the
- tooling:
- bitfossil.org is an indexer website for the inscriptions. For example bitfossil.org/67b2facfd8160d4fa11b02829b6387d07537b57a7a24f19b029b2a5ae7b81830/ displays Figure "
YellowRobot.jpg" which was inscribed at toplevel transaction tx 67b2facfd8160d4fa11b02829b6387d07537b57a7a24f19b029b2a5ae7b81830. Functionality seems a bit limited compared to the local clients however, e.g. you can't see all uploades by a given author. - apertus.io/ TODO vs Sup? At x.com/EMBII4U/status/1929498259883536886 EMBII tries to explain it but not sure.
Each P2FK inscription is done over P2FKH payloads. Each inscription a toplevel transaction which links to other transactions. All the linked transactions together make up the payload. The most common payload type is a text plus image, as is the case of Nelson-Mandela.jpg, which can be seen at bitfossil.com/78f0e6de0ce007f4dd4a09085e649d7e354f70bc7da06d697b167f353f115b8e/ where
78f0e6de0ce007f4dd4a09085e649d7e354f70bc7da06d697b167f353f115b8e is the toplevel transaction ID: www.blockchain.com/btc/tx/78f0e6de0ce007f4dd4a09085e649d7e354f70bc7da06d697b167f353f115b8e See Section "Nelson-Mandela.jpg" for a detailed reverse engineering of the format, and Section "AtomSea & EMBII data format" for a summary of it.The system shows the messages and the images on a single page: bitfossil.org/4cbb32cd27b5b5edc12d3559bdffc1355ac2a210463d5cfaadc7ce9b06675b2b/index.htm It is basically a blockchain-based Twitter.
Somewhat related projects:
At twitter.com/EMBII4U/status/1762501350997233976 (2024) EMBII mentions that he was inspired by the Satoshi uploader.
As of 2020, basically means "liquid nitrogen temperature", which is much cheaper than liquid helium.
The dream of course being room temperature and pressure superconductor.
Cool data embedded in the Bitcoin blockchain Early AtomSea & EMBII uploads by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16These are of course likely all made by AtomSea & EMBII themselves while developing/testing their upload system.
They are also artsy peoeple themselves, and as pointed at twitter.com/AllenVandever/status/1563964396656812034 what they were doing was basicaly non-fungible token art, which became much much more popular a few years later around 2021.
The first upload that we could find at github.com/cirosantilli/bitcoin-inscription-indexer/tree/3f53e152ec9bb0d070dbcb8f9249d92f89effa70#atomsea-index was tx 44e80475dc363de2c7ee17b286f8cd49eb146165a79968a62c1c2c4cf80772c9 on block 272573 (2013-12-01) but it does not show on Bitfossil: bitfossil.org/44e80475dc363de2c7ee17b286f8cd49eb146165a79968a62c1c2c4cf80772c9/. This is was due to an upload bug explained by the following entry. By looking at the ASCII data at github.com/cirosantilli/bitcoin-inscription-indexer/blob/master/data/out/0272.txt#L449 that this is meant to contain the same content as the following message: a quote from the Bhagavad Gita, so this is definitely a bugged version of the following one.
The next one is tx c9d1363ea517cd463950f83168ce8242ef917d99cd6518995bd1af927d335828 block 272577 (2013-12-02). It actually shows on bifossil and it reads:followed by:The bug message is definitely a reference to the previous non-visible bugged upload bitfossil.org/4b72a223007eab8a951d43edc171befeabc7b5dca4213770c88e09ba5b936e17/, TODO understand exactly how they fucked up. This illustrates the beauty of the blockchain very well: unlike with version control, you don't just see selected snapshots: you see actual debug logs!!!
He who regards
With an eye that is equal
Friends and comrades,
The foe and the kinsman,
The vile, the wicked,
The men who judge him,
And those who belong
To neither faction:
He is the greatest.
WeAreStarStuff.jpgThe filename is of course a reference to the quote/idea: We Are Made of Star-Stuff that was much popularized by Carl Sagan.
bitfossil.org/fac0b9a4f90414710b806fd286e020aea2404498946845ef3783f305dd4cd3a7 (2024-01-13) contains a cropped version with only AtomSea persent.
HugPuddle.jpgThe fourth AtomSea & EMBII upload, and the second image. Message:
HugPuddle Testing Apertus Disk Drive
And then finally we meet Chiharu, EMBII's partner, with her hair painted blond (she's Japanese): ILoveYouMore.jpg.
Then there are two undecoded ones TODO investigate:
Then Nelson-Mandela.jpg.
Then there's an approximation of pi as ASCII decimal fraction on tx 70fd289901bae0409f27237506c330588d917716944c6359a8711b0ad6b4ce76 from block 273522 (2013-12-07):
3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185950244594553469083026425223082533446850352619311881710100031378387528865875332083814206171776691473035982534904287554687311595628638823537875937519577818577805321712268066130019278766111959092164201989
tx b8b9f50a354166c46b69ecd47a0fbd20ee78c3471d2557bf275aff1b4cf4752d (2013-12-07) on bitfossil.org) contains Where the Sidewalk Ends by Shel Silverstein:
There is a place where the sidewalk ends
And before the street begins,
And there the grass grows soft and white,
And there the sun burns crimson bright,
And there the moon-bird rests from his flight
To cool in the peppermint wind.
tx 56768b30dec33bd284223d85c23087975e2360b3391d20d505aa59a5675e5379 (2013-12-13, on bitfossil.org):
Dear Aliens,Hey.Sincerely,
EMBII & AtomSea
tx 415c702759893c63b3a57a7d196b014e51b2a33d2396c74b8e71acfaff6b9360 (2013-12-14) contains a poem by 13th century Persian poet Rumi (TODO find bitfossil.org toplevel), starting with:Reproduced e.g. at: www.abuddhistlibrary.com/Buddhism/H%20-%20World%20Religions%20and%20Poetry/World%20Religions/Islam/Teachers/Rumi/My%20dear%20friend/Rumi%20-%20my%20dear%20friend.htm
My dear friend
never lose hope
when the Beloved
sends you away.
bitfossil.org/73ca50321147bac9010bec43d63f7f76857fe9ede240cc89710e28723fdb242f/ (2013-12-14) has message:and links to 3 .txt files
MULTIFILE SUPPORT TEST
1.txt, 2.txt, 3.txt containing single characters 1, 2, and 3.
CompressedLogo.png
. Source. 2013-12-20. Message:Possibly www.linkedin.com/in/colby-nelson-59b538207/.
Colby Nelson and myself burnt the midnight oils designing the APERTUS imagery last night....Thanks Colby for all your help.
Contains an Apertus logo which is used on bitfossil.org/ itself, presumably they were designing that logo.
Cool data embedded in the Bitcoin blockchain ILoveYouMore.jpg by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16This is the first of many love declarations and mentions EMBII makes of his partner Chiharu! This came just one day afte the very first uploads of the system.
ILoveYouMore.jpg
MadyBobbyOffToCollege.jpg
Chiharu EMBII and The Atom Sea say Happy Halloween.jpgMessage:so their location was: en.wikipedia.org/wiki/Fargo,_North_Dakota
#Chiharu #embii & the #AtomSea #Fargo #ND
Chiharu.jpgMessages:and:TODO actual Italy? Or some place named Italy in the US? One of the photos is from the First Lutheran church in Fargo, Nort Dacota.
Loraine.jpg"Loraine" on tx b4b8fe752a258f95b191b8c5426319ee0e8d41d5db53ea2ae18beed141cbb9bd, block 448352 (2017-01-15).
SatoFamily.jpgThis one gives Chiharu's full identity with picture basically. Message:so presumably Chiharu's full name is Chiharu Sato.
The Sato Family Arrives from Japan! Taken Aug 2. 2014 in Minneapolis MN. (Keiko, Chiharu, Hideaki, Katsuhiko) Now preparing for the Sato / Bobby Great American Vacation!!
More from their vacation:
More EMBII social media:
- bitfossil.com/5bfd6eab2df2eb615dd72172408e02e07fddba2f00fed9b80cd66c0b115ee03d/index.htm "Found on Mady's camera", EMBII wearing a funny red suit and drinking orange juice
Cool data embedded in the Bitcoin blockchain Nelson-Mandela.jpg analysis by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16The toplevel transaction is 78f0e6de0ce007f4dd4a09085e649d7e354f70bc7da06d697b167f353f115b8e
The full concatenated payload contains the following ASCII characters:
8881a937a437ff6ce83be3a89d77ea88ee12315f37f7ef0dd3742c30eef92dba|396*8881a937a437ff6ce83be3a89d77ea88ee12315f37f7ef0dd3742c30eef92dba
575061146335bd57f2dc132112152d0eeea44cf187ea6a52ac02435a7e5bea44
674c7cc34ea44bb276c6caf76f2b28fa1597380ab6e6a6906076d8f7229ca5b3
8e2642416ad20924b43f51a633fa1c0a5ba8e4a7b631877db1c64540a42081c9
a3084018096b92af04df57b6116e01ff4b7c7e8bd228235ed49e23f4a2817029
39348722b841afa0c5b67e5af10839afe965ed1b24874e89336bea9fa4ef3091
tomSea & EMBIIOutput 2 is a change, so it contains no data and has been excluded. Change appear to be randomly placed in the list of output of the uploads, but they can be easily removed because they are the only output with a different value.
The newlines shown above are explicitly encoded as CR LF newlines with characters 0d 0a.
396 is the number of payload bytes between 396*8881a937a437ff6ce83be3a89d77ea88ee12315f37f7ef0dd3742c30eef92dba and the last txid 39348722b841afa0c5b67e5af10839afe965ed1b24874e89336bea9fa4ef3091, including newlines but exclusding the last line.Now let's inspect the transactions linked to from toplevel.
tx 8881a937a437ff6ce83be3a89d77ea88ee12315f37f7ef0dd3742c30eef92dba contains only payloads without any change. It starts with the following UTF-8 string with CR LF spaces;
"396\“There is nothing like returning to a place
that remains unchanged to find the ways in
which you yourself have altered.”
-Nelson Mandela
Nelson Rolihlahla Mandela was a South African anti-apartheid revolutionary, politician and philanthropist who served as President of South Afrd۽^2c'︨`ica from 1994 to 1999. -Wikipedia
Born: July 18, 1918, Mvezo, South Africa
Died: December 5, 2013This is immediately followed without any separator by a filename, and another size marker:then followed by all the
Nelson-Mandela.jpg?14400/14400 - len(Nelson-Mandela.jpg?) + len(/) JPEG bytes bytes, starting with the two JPEG file signature byte "FF D8".Further toplevel transaction payloads are then simply concatenated with the previous ones, until the last bytes of the image "FF D9" appears at the end of the payload.padded once again by an
00000430 d2 81 de 80 0c 52 f1 40 ea 29 68 03 ff d9 6f 6d |.....R.@.)h...om|
00000440 53 65 61 20 26 20 45 4d 42 49 49 00 |Sea & EMBII.|AtomSea & EMBII string fragment terminated by a NUL character. Cool data embedded in the Bitcoin blockchain Interesting AtomSea & EMBII uploads by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16
Shiemaa&Vincent.jpgMessage:TODO identify Shiemaa and Vincent.
tx 36d0d77acd760f0aa549b6b314f0c1e9690baa6bcc2d0f07ea9f3167f4a5ec99, block 318836 (2014-09-03)Cost: ~0.002 BTC ~ $0.77 at the time.
Several other interesting uploads were also made around block 318836 (September 2014):
RedRaven.jpgbitfossil.org/e17b83234402d85f3a18207eec11bc5c4397f88aa880aae4fb7d15802806a971/index.htmEarth3Archive.jpgbitfossil.org/ae8d3b46b934bedc363e11abe8c8607171994470957c286274f699a0b3a9bbd7/index.htmSkyEarth5Archive.jpgbitfossil.org/ae8d3b46b934bedc363e11abe8c8607171994470957c286274f699a0b3a9bbd7/index.htm
BikeLady.jpgBike Lady by Allen Lee Vandever. tx 2c4b9497af8c0c0eb9383357b40c3de33dba0b4f481099a32719f2b9036da8e7, block 319927 (2014-09-10)
This seems to be a novel work uploaded by its creator artist Allen Vandever according to EMBII.[ref].
Arecibo_message.svgArecibo message on tx c6d2e535cd2ba4659e954a61198c66fd98c60f6475cf8ff92a404f3fe3a16c4b, block 337874 (2015-01-07)
An "artificially" colored visualization of the Arecibo message ripped from Wikipedia: en.wikipedia.org/wiki/File:Arecibo_message.svg (with attribution).
The cool thing about this image is that it highlights the striking parallels between the encoding of the Arecibo message with crypto graffiti, because in both cases people were creating undocumented new ways of communicating with strangers on a new medium in those early blockchain days.
The associated message contains the Arecibo message as ASCII 0's and 1's. When properly cut at the newlines, they draw the message as ASCII art, as the original Arecibo encoding intends, here's a version with the 0's replaced by spaces to make it more readabale:
1 1 1 1
1 1 1 1 1
1 1 1 1 1 11 1
1 1 1 1 1 1 1 1 1 1
11
11 1
11 1
1 1 1
11111
11 111 11 11
1 11 1
11 1 11 11 11 1
11111 11111 11111 11111
1 1
1 1
11111 11111
11 11 111 11
1 1 1
11 1 11 111 11 1
11111 11111 11111 11111
1 11 1
11
1 11 1
11111 11 11111
11
1 1 1
1 11 1
11 11 1
11 1 11
11 11
11 1 11
11 11 1
1 1 1
1 11 1
1 11 1
1 1 1
1 1 1
1 11
11 11
1 111 1 11
1 1
1 11111
1 1 111 1 1 11 11
1 111 1 111111
1 111 111 11 111
1 1 111 11
1 1 1 111111
1 1 1 11
1 11 11
111 1
111 1 1 1 1 1 1 1 1
111 1 1 1 1
1 1
11111
111111111
111 111
11 11
11 1 1 11
11 11 11 11
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1
1 1 1
1 1
1 1 1
1111 11111 1 1111
He sleeps in a temple.jpg
Dr_Craig_Wright.jpg
. Source. Associated message:
The image is present e.g. at: www.kitguru.net/channel/jon-martindale/australian-man-claims-he-is-satoshi-nakamoto-bitcoin-creator/ It was inscribed about two months after Craig publicly claimed that he is Satoshi.
This is a relatively unusual AtomSea & EMBII upload as it does not have the common toplevel transaction, everything, text + image fits into a single transaction. This is perhaps why the image is relatively low resolution to have a smaller size.
YellowRobot.jpgYellow Robot on tx 67b2facfd8160d4fa11b02829b6387d07537b57a7a24f19b029b2a5ae7b81830, block 450516 (2017-01-29)
The associated message reads:This is one of Ciro's favorite AtomSea & EMBII uploads. This is the cutest thing ever, and perfectly encapsules the "medium as an artform" approach to blockchain art. More Chiharu stalking at: ILoveYouMore.jpg.
Chiharu and I found this little yellow robot while exploring Chicago. It will be covered by tar or eventually removed but this tribute will remain. N 41.880778 E -87.629210
At twitter.com/EMBII4U/status/1615389973343268871 EMBII announced that he would be giving off shares of that image on a Bitcoin-based NFT sale system he's making called Sup!?, and in December 2023 gave 2/300 shares to Ciro Santilli. Amen. The transaction list can be seen on the web UI at: p2fk.io/GetObjectByAddress/1KUyhHLrK1ckY8W7Qu31h6gFkXoihWHMzi?mainnet=true&verbose=true It had unfortunately never sold as of 2025, the only activity was EMBII giving off some shares and two listings of 1/300 for 1 BTC. Poor EMBII!
Other possibly novel EMBII street photography:
- bitfossil.com/f2efd446475ad58a3ea808cc0f05a63c55cece9fced70d84799a1ffce5d307e4/index.htm "I will not Stop until the Finite becomes the Infinite."
Audio:
alien.wavblock 318638 bitfossil.org/a3a24d6ea01ce481a50346818b8977220687f3ba385838fe8894ce61c9718bbc/OneGiantLeapForMankind.mp3at tx 4f5b25fa8021c67235423930580e69121aa0d2c2bb779f75139bf442f8dc7297 EMBII-indexed at 743f3286b00fc96c13db4b16d5aead8a1e059fee9ce775b1761be9be5bdc2501 and then indexed at: 0427ec598df38b7d7dc75721316c0bbdec54de4871e11aff8ea64f3717c07efbThe toplevel index does appear on Bitfossil: bitfossil.org/0427ec598df38b7d7dc75721316c0bbdec54de4871e11aff8ea64f3717c07efb/index.htm but the audio is not there as it was for Spock below, maybe a bug on upload/Bitfossil?Spock_Live_Long_And_Prosper.mp3block 345858 bitfossil.org/1bc87dbff1ff5831287f62ac7cf95579794e4386688479bab66174963f9a4a0c/index.htm. Audio of Mr. Spock saying the Vulcan salute.OuterSpace.mp3block 409471 bitfossil.org/c14c1bd862bab6269052bf0a2cda7a35940d7a2d9c3415d4fb8fb8dcb9394fae/ "Outer Space by embii 4MB Large file storage test Apertus 0.3.5-beta" OMG, I don't want to calculate how much it cost to upload this, it will make me sad.At twitter.com/EMBII4U/status/1655969645927563266 EMBII mentions that this inscription, made by him, is the largest inscription he knows of.TODO song composer/performer?- bitfossil.com/c2b170ff450f4529dfbd784e0cf5cdddaca494e67a243dd846c0a9450a5558af/ (2021-03-13) contains
Seikilos.mid, a MIDI file
Interesting text:
- block 273522 bitfossil.org/70fd289901bae0409f27237506c330588d917716944c6359a8711b0ad6b4ce76/index.htm pi to 1000+ decimal digits:
- bitfossil.org/8522787e7e49f3f3b6a9f9e86bc30336d26a3acbaecc93809d2e8b4bb1c4d611/ "Antarctic Ice Cores Revised 800KYr CO2 Data" evidence for global warming
- bitfossil.org/ffa6893a70bcde9b940df9823e0f597f0b6cff964c78473c77db838655e1aeb5/ en.wikipedia.org/wiki/Laudato_si', global warming related
HTML pages:
- block 335290 bitfossil.org/0166db6053f1969c28de8b1f9a8fa4ec890cc4bdfee7602757993b306bb7f295/ JavaScript animated timer clock counting down until the start of the next year
- block 340379 bitfossil.org/062990d54045a9c316110fb713009d1313b2f64c4b216d66891c7284d6c1ca0e/ links to bitfossil.org/062990d54045a9c316110fb713009d1313b2f64c4b216d66891c7284d6c1ca0e/bong-ball.html and has a working JavaScript Pong
- block 328445
tom-signature.jpgbitfossil.org/daa050bf8ac22752e40412c9265b4533f68ab8e6ed26d2db1eeee6710e7d9e4b/index.htm Unrendered HTML of:Likely an obituary for: Thomas L. Magliozzi. Images show fine though.- www.cartalk.com/content/tom-and-rays-bios-photos-2
- www.cartalk.com/content/rant-and-rave-36 "The New Theory of Learning" which agrees perfectly with backward design
- block 401648 bitfossil.com/31c5e5336512568e4a1deb4bbf0e57c3565c32094c0e1a118c48e7929ab49e35/bong-ball.html another one! This one is full-screen, and does not have JavaScript
alerts :-) - block 401657 bitfossil.org/03cb74f270d498302d4dd9cbe82c090d801c8840ab6cb26b71d862489b981db8/ has a JavaScript Pac-Man
Superconductivity is one of the key advances of 21st century technology:
- produce powerful magnetic fields with superconducting magnets
- the Josephson effect, applications listed at: Section "Applications of Josephson Junctions"
catalog.ngc.nvidia.com/orgs/nvidia/resources/resnet_50_v1_5_for_pytorch explains:
The difference between v1 and v1.5 is that, in the bottleneck blocks which requires downsampling, v1 has stride = 2 in the first 1x1 convolution, whereas v1.5 has stride = 2 in the 3x3 convolution.This difference makes ResNet50 v1.5 slightly more accurate (~0.5% top1) than v1, but comes with a small performance drawback (~5% imgs/sec).
No, see: superconductor I-V curve.
Bibliography:
- physics.stackexchange.com/questions/62664/how-can-ohms-law-be-correct-if-superconductors-have-0-resistivity on Physics Stack Exchange
- physics.stackexchange.com/questions/69222/how-can-i-put-a-permanent-current-into-a-superconducting-loop
- www.quora.com/Do-superconductors-produce-infinite-current-I-V-R-R-0-How-do-they-fit-into-quantum-theory
- www.reddit.com/r/askscience/comments/dcgdf/does_superconductivity_imply_infinite_current/
- www.reddit.com/r/askscience/comments/7xhb46/what_would_happen_if_a_voltage_was_applied_to_a/
Cool data embedded in the Bitcoin blockchain AtomSea & EMBII data format by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16Best guess so far, all in ASCII hex of output scripts:
- remove the single output value different from first one from payload, that's the change, and it is randomly placed as far as I see
- 64 bytes: hex address of top level text
- 1 byte: some random punctuation
- decimal number of bytes of some payload
- 1 byte: some random punctuation
- 64 bytes: same as the first address
- CR LF
- ends in NUL
In this section contains a list of images we could find that wre uploaded as raw data to the blockchain, without any special encoding, e.g. as done by the AtomSea & EMBII system.
It is possible that some/most of those were uploaded via the cryptograffiti.info system, but since that indexer stopped working, and since the format is so non-specific, it is not possible be sure as far as we can tell.
These images were indexed by looking for standard transaction output script hashes that contain JPEG or PNG images immediately on the first payload byte based on file signature bytes and indexed/easily downloaded at github.com/cirosantilli/bitcoin-inscription-indexer#image-indexing-and-download.
western-union-bitcoin-spoof.jpg.gz
. 200f3f6f8a91ae438d1924e5cedca98cea7f0197b9eba11343948b5621ca19ed block 331804 (2014-11-27) JPEG in Gzip as a single input script constant.
This ad highlights one of the claimed potential advantages of Bitcoin: cheaper/faster cross border transactions.
This inscription is highlighted at Data Insertion in Bitcoin's Blockchain by Andrew Sward, Vecna OP_0 and Forrest Stonedahl. Finding Gzips with binwalk is hard because the file signature is only 2 bytes long (1F 8B), so there are lots of false positives.
Gzip binary uploaded at: raw.githubusercontent.com/cirosantilli/media/master/bitcoin-inscription-indexer/data/bin/200f3f6f8a91ae438d1924e5cedca98cea7f0197b9eba11343948b5621ca19ed.jpg.gz gunzip 1.12 complains:but we were not able to fix that: removing bytes at the end goes straight from "trailing garbage" to "incomplete file" after a certain byte.
western-union-bitcoin-spoof.jpg.gz: decompression OK, trailing garbage ignored
Super Mario coin sprite
. tx bf7ef3216ae09f8252c76e7d0031bc4aa131a23a6900f8371c44ffde7957c8da (2015-03-01). Possibly from Super Mario World for the SNES (1990). No doubt a self-reference to Bitcoin itself. Encoded as a data URL for a PNG image:<img src="data:image/png;base64,
JPG thumbnail
. Presumably a JPEG upload test. tx 515a95381e511141229966d722db19db7da66a0d629b1f883d296287632e72b3, block 349362 (2015-03-26) via cryptograffiti.info.
A heart next to a bitcoin logo and written "we love bitcoin". Reproduced at: kryptomoney.com/grayscale-report-institutional-investors-retirement-funds-love-bitcoin/
Embedded in the image itself, there's a message in the header comments:which is the opening paragraph of: bitcoin.org/en/
Bitcoin uses peer-to-peer technology to operate with no central authority or banks
tx b70bfe6a9b314611655554576feb11f15d47b9e80c5993e91829bb87895ef23c block 355899 (2015-05-11). PNG inscribed as a Daisy chain Bitcoin inscription using OP_RETURN.
The daisy then follows up to the Figure 6. "City of London School logo", which therefore must be by the same uploader.
City of London School logo
. tx 6ab2f3dbff0ebd856f6cf0360fc7db987f8789508dfdefdcc1f9e2aacf9ac0de block 355901 (2015-05-11). PNG inscribed as a Daisy chain Bitcoin inscription using OP_RETURN.
This image is encoded on the very same daisy chain as Figure 5. "The Economist logo", immediately afterwards.
The transactions leading up to b70bfe6a9b314611655554576feb11f15d47b9e80c5993e91829bb87895ef23c contain multiple text daisy inscriptions that show up on our text dumps at: github.com/cirosantilli/bitcoin-inscription-indexer/blob/e716e317b703e1bad63edf5064f90f5e80c5aaf5/data/out/0355.txt#L635
- 5256d3059520c9ecda22bcf17776adcc962a5ae90333efbb00cf45818e9bf0bb:then a quote from bitcoin.org/en/faq (archive):
You're poo you're papa, says WeeWaWeeWa
then:Bitcoin is the first implementation of a concept called "cryptocurrency", which was first described in 1998 by Wei Dai on the cypherpunks mailing list, suggesting the idea of a new form of money that uses cryptography to control its creation and transactions, rather than a central authority. The first Bitcoin specification and proof of concept was published in 2009 in a cryptography mailing list by Satoshi Nakamoto. Satoshi left the project in late 2010 without revealing much about himself. The community has since grown exponentially with many developers working on Bitcoin.
And now, via JSON-RPC!
- d6b006f3cd9b545d5015263e954dae7c52c71bb5f4a0573918ff0e1ce8785de4 contains another quote from bitcoin.org/en/faq (archive):followed by:
Much of the trust in Bitcoin comes from the fact that it requires no trust at all. Bitcoin is fully open-source and decentralized. This means that anyone has access to the entire source code at any time. Any developer in the world can therefore verify exactly how Bitcoin works. All transactions and bitcoins issued into existence can be transparently consulted in real-time by anyone. All payments can be made without reliance on a third party and the whole system is protected by heavily peer-reviewed cryptographic algorithms like those used for online banking. No organization or individual can control Bitcoin, and the network remains secure even if not all of its users can be trusted.
One day this will be for general storage
- d9450fbd228d7a19d08f700d43200184b0d46561ffd7eb9ddbb378435ec66789 says:These inscriptions were made right in the midst of the protests against larger block sizes.
Let's agree on 5MB blocks and move on?
- a689707f77882eb5a3b1954747f159b1c22b688a57ec17b4d636b7f94e451e3dthen the intro from bitcoin.org/en/ (archive):then:
Bitcoin uses peer-to-peer technology to operate with no central authority or banks; managing transactions and the issuing of bitcoins is carried out collectively by the network.
Parents daisy more text visible on our text dumps: www.blockchain.com/explorer/transactions/btc/b70bfe6a9b314611655554576feb11f15d47b9e80c5993e91829bb87895ef23cIt's my cake day. I pressed the button. I have no regrets. Just stick it on the blockchain
Iranian lady with polar bear hat.
tx b673c7d0c62cce8315ad6cc63a2c8ca8169bf73432435760b808735e1a7fe0e2 block 401255 (2016-03-05). JPEG encoded with daisy chain Bitcoin inscription using OP_RETURN.
The image data is cut in half. This makes the image an invalid JPEG, but ImageMagick is able to recover and convert to a valid image which is what we show here to make it portable to more browsers. The raw invalid image is present at: raw.githubusercontent.com/cirosantilli/media/master/bitcoin-inscription-indexer/data/bin/b673c7d0c62cce8315ad6cc63a2c8ca8169bf73432435760b808735e1a7fe0e2.jpg, but it can also be generally viewed by most viewers.
This embedding uses a novel more specialiezd protocol on top of a raw daisy chain Bitcoin inscription.
The daisy actually starts at f49e79889b34d355fa8a02f13b9db4ed69c067f975e25339737ef10e4b993d7a and data is encoded as follows:
OP_RETURN 62 00000000 48656c6c6f20776f726c64212052657475726e20626c6f622070726f746f636f6c2076
OP_RETURN 62 00000001 313a204d41474943203d20307836322c205041434b414745203d2075696e7431362c20
OP_RETURN 62 00000002 53455155454e4345203d2075696e7431362c205041594c4f4144203d20757020746f20
OP_RETURN 62 00000000 48656c6c6f20776f726c64212052657475726e20626c6f622070726f746f636f6c2076
OP_RETURN 62 00000001 313a204d41474943203d20307836322c205041434b414745203d2075696e7431362c20
OP_RETURN 62 00000002 53455155454e4345203d2075696e7431362c205041594c4f4144203d20757020746f20
OP_RETURN 62 00000003 33352062797465732e0a
OP_RETURN 62 00010000 ffd8ffe1001845786966000049492a00080000000000000000000000ffec0011447563
OP_RETURN 62 00010001 6b79000100040000003c0000ffe1039a687474703a2f2f6e732e61646f62652e636f6d
OP_RETURN 62 00010002 2f7861702f312e302f003c3f787061636b657420626567696e3d22efbbbf222069643d
OP_RETURN 62 00010003 2257354d304d7043656869487a7265537a4e54637a6b633964223f3e203c783a786d70
...
OP_RETURN 62 00010085 51290358a41fe5408b4435254208d4810a5fe9113044c1ae3aa544656d729756395b87
OP_RETURN 62 00010086 c4e261f55c5d19e1c792c3f78adff1368db58e5a0bb85b2c6753c42de6d973edae0642
OP_RETURN 62 00010087 1b2c8370f203aaa0a6eb7ea0871d8e9ae6534b785b57347171e4df6a5463d7ce77b93b
OP_RETURN 62 00010088 9b8bf96edd1b982e2474a41ad28e3c01e74586d1d1ad7a874c5a1b7c742d2285c371f6The first block is:which then gets repeated, probably an error, but now with the sentence completed:This therefore gives us the name of the protocol as "return blob protocol". We also understand that the 0x62 was aconfiguration parameter.
Hello world! Return blob protocol v1: MAGIC = 0x62, PACKAGE = uint16, SEQUENCE = uint16, PAYLOAD = up to
Hello world! Return blob protocol v1: MAGIC = 0x62, PACKAGE = uint16, SEQUENCE = uint16, PAYLOAD = up to 35 bytes
ffd8ffe1 marks the start of the JPEG.If the rest of the image were inscribed somewhere random in the blockchain, we'd expect to find the string
6200010089 containing the netxt data chunck on a nearby block, but bgrep did not find it, so perhaps the data just isn't there.The last tx of the daisy is 43b182065ab2c7d1908ec3cee756d9f626c1e4bd1efa17a7c3993433b653d499 which is followed by 9e6838a3545bd59a708d0c177d6840c7d82b8ac6220138ca3d8133a1376405aa which does not contain any data.
Erich Erstu
. Alias: 1Hyena. A well built man wearing a gas mask. Google image search leads to: github.com/1Hyena (archive), who is the creator of cryptograffiti.info. It was around after this time that the number of raw images surged dramatically in the blockchain, so it is possible that this is when the service started operating. This further suggests that most raw image uploads we found were made with cryptograffiti.info. tx c206e8fff656f07b27dac831ef9b956792bae4e76a2cb43f14f49f0298bf2c2f, block 416527 (2016-06-16). Embedded text:Hyena was here on the 16th of June 2016.
Water Deer
. badtaxidermy.com "Water Deer" image, visible at: web.archive.org/web/20200527070011/http://www.badtaxidermy.com/?page=3. tx 357e8ae080e5a1b554eaec2953e3e6e2e7955f3af4559dd0f1bc6381d56aa183, block 416735 (2016-06-16) via cryptograffiti.info. The file contains the strings:www.badtaxidermy.com
Cryptograffiti.info now allows you to attach JPEG images to your messages.
hotmine.io
. A mining supplier: hotmine.io/en. twitter.com/uahotmine. tx 8ec01c5e8f3b57adb13079af3b7e40e7acd3986a5ed14325388405771bd43f9b, block 416835 (2016-06-18) via cryptograffiti.info. The file contains the following string embedded into it:Smart Heating, Bitcoin Mining For You - en.hotmine.io
Nada from They Live (1988)
tx 83df1e5ecc1c7ac455d2855e15cff8fa5771afe2ad1796c8b6b1a8e910e829c4, block 416896 (2016-06-18) via cryptograffiti.info. The file has the following string embedded into it:which is a reference to Nada's original dialogue:
Cryptocurrency Minning ad
. Twitter "@dobcrypto": twitter.com/dobcrypto Reuploaded at: imgur.com/gallery/00oOuhm. tx eda07af9584391bb6f5ebb07ba57a51b610751fdf06ae49d9166225c36d97d0b, block 417111 (2016-06-20) via cryptograffiti.info. The file contains the following string:Subscribe, I will be glad to see you! www.youtube.com/c/dobcryptocurrency
Chinese wedding
. tx 609d5e0f968c0ab7abc2be21468cfd552483d38b08e6df23d27766eb61b9be3c, block 417131 (2016-06-20) via cryptograffiti.info.
A white man and a Chinese woman wearing Chinese traditional dressess holding hands, presumably a token from their wedding. A Chinese poem is visible next to them, with four vertical setences made up of 7 characters each, to be read from right to left. This is a classic Classical Chinese poetry form known as qijue.
A photo of a snowy mountain is shown in the background, fitting the theme of the poem. It looks like an European mountain, possibly Mont Blanc? TODO identify. Perhaps a reference to the nationality of the husband.
TODO transcribe the Chinese text, cursive grass script + traditional characters + ultra-low res put this beyond Ciro Santilli's capabilities/patience ratio. Ciro Santilli's wife's transcribed gave the first column as:and no Google hits, so maybe an original poem? What a hero. TODO transcribe the rest.
The image file contains the English transalation of the Chinese poem embeded into it:
A scarlet gemstone hides quietly in the midst of the mountains.
Its beauty softly enters the wanderer's dreams.
Fame and fortune become like drifting clouds
But the gem endures like the constellations above.
Superbuffo
. Googling gives a Toni Caradonna: twitter.com/superbuffo. At twitter.com/Superbuffo/status/1620900765014556672 that twitter account claimed the art or its depiction. www.imdb.com/name/nm9516368/ has some obscure references to him. tx 6240f61bbaeac66cd623e921a153addaf5f379a996f2de0f0c6506d628fe3812, block 417354 (2016-06-21) via cryptograffiti.info. The file contains the following string embedded into it, in addition to a lot of Adobe boilerplate:Superbuffo the first comedian on the blockchain
Rene Angelil and Celine Dion
. Reproduced at: web.archive.org/web/20191130174338/https://people.com/celebrity/inside-celine-dion-and-rene-angelils-21-year-marriage/ but cropped to faces. tx e2e5b9cf04d93ae5fc1b54e9208b92b668823e014b251f57510e4702661fa1a6, block 417272 (2016-06-21) via cryptograffiti.info. Embedded text:You will be here forever
New Age dance
. Woman dancing a New Age-like dance with New Age-like Indian looking clothes, holding a lamp, and with a rose on her hair. TODO identify. tx 0602dd1b375bc71818db0a40d7a14f438499af3eda9056125eb5a1b74bed790b, block 419676 (2016-07-07) via cryptograffiti.info. The image contains the following text embedded into it (TODO unknown mechanism, does not show up on exifTool:No alcohol and smoking since 07.07.2016. Love girls!
Snake penetration sculputure
. Sculpture of what seems to be a snake penetrating a vagina. tx 83f412eb7ff40fe542901186a6d37cba0eb4f8458c574bc02a6f7236c599fe07, block 420122 (2016-07-10) via cryptograffiti.info.
Wedding invitation
. TODO: make out names, quite low res, no patience. Looks like Cyrillic script. tx 01c3af71c12d49260231dcb3cc86d6ff21b3cd90878e9556482ef3b0908abffe, block 420960 (2016-07-16) via cryptograffiti.info.
Wedding Wallled 15Nz214yv76BmkKLCi8kAVssa5C7nQHLjx
Oles Slobodenyuk
. tx 10cc5d45396ba271659a4b00d2f70c433533227e5f7ea30bb5bd3c8563d7468a, Block 421280 (2016-07-18) via cryptograffiti.info
Wedding picture with people holding "Blockchain" and "Ipa" signs.
Reproduced at: web.archive.org/web/20200926150213/https://freebitcoins.com.ua/zapushhen-ukrainskij-bitkoin-pul-bitcoinukraine/ Google translate:
Oles is for example featured at: uk.sports.yahoo.com/news/bitcoin-miners-heating-homes-free-133053106.html Bitcoin Miners Are Heating Homes Free of Charge in Frigid Siberia by Anna Baydakova (2019)
The image file contains the following text embedded into it:The link is dead of course.
<Wedding date: Jul 17, 2016
proof link goo.gl/photos/2GToBx1WqRyiQtxQ6
Nematode
. A... nematode-like shaped hand drawn extremely simple image? A test upload presumably? The squiggle outside of the worm might be a test direction marker. tx 554846025e808df7adec3b1d099e3d4d54b7367cddaa959939cb5ca0fc6abf7b, block 424414 (2016-08-09) via cryptograffiti.info. The image file contains the following string embedded into it:
Hand written contract
. Wedding contract written in Czech. Transcription and translation by Petr Kadlec:Translation:Signatures:
Svým podpisem pod tímto textem potvrzuji, že Daniela Dudysová a Pavel Urbaczka v mé přítomnosti dne 20.8.2016 v Ropici projevili vůli uzavřít spolu manželství, přičemž ani jeden z těchto projevů se mi nejevil jako nesvobodný, nikoliv vážný, nesrozumitelný, omylný nebo uzavřený v tísni.
With my signature under this text, I confirm Daniela Dudysová and Pavel Urbaczka have, in my presence on 2016-08-20 in Ropice, expressed the will to enter marriage, whereas neither of their expressions seemed to me to be non-free, not serious, in error, or under distress.
Tereza (unreadable) Hana (unreadable) Jakub (unreadable) Radim Kozub (unreadable) (unreadable) Lenka (unreadable)
Petr also conjectures that Jakub may refer to Jakub Olšina from Blockchain Legal. Figure 23. "Wedding on grass" on the same block contains a image of a wedding, presumably the same of the contract. The photo of the man might be the same person as www.linkedin.com/in/olsinajakub/, but a bit younger.
Wedding on grass
. tx 693848d56098a0ad16736bea7f24336c9b47a7f0a6f776659e8d01f00b46af76, block 426072 (2016-08-20) via cryptograffiti.info.
The file contains the following text embedded into it:which is Czech for:So it is a followup to Figure 22. "Hand written contract".
Danila a Pavel se právě vzali!
Danila and Pavel just got married!
Onshape ad
. Ad for www.onshape.com/en/, an online CAD company:#CAD users all over the world are designing in the cloud! Join them by creating a #free Onshape account: hubs.ly/HO3vJ6tO. tx c0bb963cb3ceffc49059f09db94e3fd73caa3b7a8e005160d49e99020ff6b51a, block 426832 (2016-08-25) via cryptograffiti.info. Embedded text:@Onshape - The Future of Professional CAD
Pepe the Frog
. ca933de16b6466e40b37c7ee0ec0dcd9a56bc365a567a5fff81ba4927dd61e23 (2016-10-17) via cryptograffiti.info. Embedded text:In Pepe We Trust
#BITCOINPEPE
Hello. Yes, this is dog
. knowyourmeme.com/memes/yes-this-is-dog. tx 4b0cd7e191ef0a14a9b6ab1c5900be534118c20a332ff26407648168d2722a2e, block 440418 (2016-11-24) via cryptograffiti.info.
Ross Ulbricht
. Exact image also reproduced at: ethereumworldnews.com/ross-ulbricht-attorney-dismiss-2018/. tx b25ba2080d15c1277569bd2fee707a216c4e2ee0a1f479349c2309651c261511, block 442225 (2016-12-06) via cryptograffiti.info. Embedded text:
Tuxedo and rose
. Black and white and intentionally blurred photo of couple, the woman wears a tuxedo, and the man holds a red rose/light-like thing in the middle. tx c67dca17d3e5544d8d2c70d143196e1c1438a09c7371b80086d0a71ec5aec3c8, block 453083 (2017-02-14) via cryptograffiti.info.
Couple on mountains
. Middle aged couple selfie in front of some mountains. tx 00a64f2ff9aae7a34c21d07b8fc9bad79989f25295ccbddc6fbe73b3685b65a9, block 456370 (2017-03-09) via cryptograffiti.info. The file contains the following Spanish poem, whch confirms that their Spanish looking faces are actually Spanish, perhaps they are at the Pyrenees:Sometimes we are almost two strangers,
strange as strange as they are different,
but we deceive ourselves, you know it, I know it,
actually we are very inside
the same truth.Hidden in your eyes
my most beautiful dreams sleep,
when do you open them in front of me
They wake up happy and cheerful.
Tank Man
. tx ca4f11131eca6b4d61daf707a470cfccd1ef3d80a6f8b70f1f07616b451ca64e, block 458238 (2017-03-21) via cryptograffiti.info.
See also: Section "China".
Searching for the image hash ca4f11131eca6b4d61daf707a470cfccd1ef3d80a6f8b70f1f07616b451ca64e leads to archive.4plebs.org/pol/thread/191157608/#q191162145 which links to the now dead as of 2021: cryptograffiti.info/#ca4f11131eca6b4d61daf707a470cfccd1ef3d80a6f8b70f1f07616b451ca64e.jpg.
Mr. Burns You're here forever
. tx 94e319d09fc236fb9d7a24e60af8f47ed41ca3cc01e9950c925d806153ed8aa3 block 460435 (2017-04-05)
Mr. Burns from The Simpsons showing a sign:Still from S06E13 of The Simpsons. A reference to the immutability of the blockchain.
Don't forget, you're here forever
This transaction is given at Data Insertion in Bitcoin's Blockchain by Andrew Sward, Vecna OP_0 and Forrest Stonedahl. We've decoded it with:TODO understand the encoding better. Our indexing scripts Bitcoin Inscription Indexer missed it because the image is encoded on starting on the second constant of the input script and not the first.
btc getrawtransaction 94e319d09fc236fb9d7a24e60af8f47ed41ca3cc01e9950c925d806153ed8aa3 true | jq -r '.vin[].scriptSig.asm' | sed -r 's/^[^ ]+ //' | sed -r 's/ [^ ]+$//' | tr -d '\n' | xxd -r -p > tmp.jpgThis was missed by binwalk because it does not index the valid JPEG signature "ffd8ffdb"... we should patch it... github.com/ReFirmLabs/binwalk/blob/cddfede795971045d99422bd7a9676c8803ec5ee/src/binwalk/magic/images#L107
Augustana College Old-Main.jpg
. tx 033d185d1a04c4bd6de9bb23985f8c15aa46234206ad29101c31f4b33f1a0e49 block 474586 (2017-07-07)
First tx 1e347cf7521a1318ef31af4f5758efbc45f1bb2a7db9bc1cc469bfe93599eaf7 sets up 48 P2SH outputs and gives ASCII message
Augustana College Old-Main.jpg Reconstruct with data preceding redeemscripts
Then tx 033d185d1a04c4bd6de9bb23985f8c15aa46234206ad29101c31f4b33f1a0e49 redeems those with 48 input scripts that encode the image with ASCII message:
Augustana College Old-Main.jpg Reconstruct with data preceding redeemscripts
Encoded with Two-stage P2SH inscription. Mentioned at: Data Insertion in Bitcoin's Blockchain by Andrew Sward, Vecna OP_0 and Forrest Stonedahl. See also this ASCII art by the same authors: Code "Study Math and Computer Science at Augustana College". Previously mentioned at: twitter.com/ottosch_/status/1735297943563837726
PDF demo
. tx b4f537bc536c392d425af0693e3282bbf697df01debeeaf7f9918b93af6bdd14 block 474646 (2017-07-07) via cryptograffiti.info contains a single page 7.9 KB PDF sample file also present e.g. at: www.studocu.com/en-gb/document/harrow-college-uxbridge-college/assessing-risk-in-sport-unit/pdf-sample-its-nothing-dw/61244699. This image is a screenshot of the PDF made manually to make it easier to view here, the actual inscribed file has been uploaded to: raw.githubusercontent.com/cirosantilli/media/master/bitcoin-inscription-indexer/data/bin/b4f537bc536c392d425af0693e3282bbf697df01debeeaf7f9918b93af6bdd14.pdf. The first lines of the document read:Adobe® Portable Document Format (PDF) is a universal file format that preserves all of the fonts, formatting, colours and graphics of any source document, regardless of the application and platform used to create it.
Cat manga
. TODO identify, transcribe japanese. tx 4986e9cd20b75bb534df92e60b232945e18274f4c46d25b8853af9bdda5166b8, block 581526 (2019-06-20).
Arms crossed
. Nerdy caucasian woman in her late teens/early 20's wearing glasses and a jeans jacked with her arms crossed. TODO identify. tx a55e5e7492848445a9f9ecf55ce566242c9d95e6c46a171fd94a345e8b74c355, block 597374 (2019-10-01) with P2FKH
Black cat
. No, Google reverse image search is never going to find the exact one amongst billions of pics. tx 8cf28eb9ac221d8cd15298b9ae63eca910b536a5234c133c7e364b29a4e39d21, block 625045 (2020-04-09) with P2FKH.
The Starry Night by van Gogh
. tx 225ed8bc432d37cf434f80717286fd5671f676f12b573294db72a2a8f9b1e7ba, block 685647 (2021-05-31) Stored on SegWit. Googling leads to this hit: github.com/aureleoules/bitcandle by French programmer Aurèle Oulès which is an obscure uploader not known to us before this transaction was found.
tx 8dc2785335c59df6c00257f9b20e5df9b932a717f97066b279e292faba71a67a block 685737 contains another one, but with a slightly different encoding, presumably Aureole was trying out different things.
tx 3110f49fb6047d62e6fa198a0a4b180d9abf7075d6f29472747990ae286295cb block 690497 (2021-07-10). JPEG using P2FMS
This P2FMS has the peculiarity that each payload constant is preceded by a
04 byte which must be thrown away, we've decoded it manually with:bitcoin-core.cli getrawtransaction 3110f49fb6047d62e6fa198a0a4b180d9abf7075d6f29472747990ae286295cb true | jq -r '.vout[].scriptPubKey.asm' | head -n-2 | sed -r 's/^....//;s/ 3 .*//' | tr -d ' \n' | xxd -r -p > tmp.jpgThis transactions is also mentioned at: github.com/bitcoin/bitcoin/pull/28400 "Make provably unsignable standard P2PK and P2MS outpoints unspendable"
Gulagu.net logo
. tx 9c1a5d5a9e65e9a35050d67574681695a5c46a3df3feb27834848daa49c2fb92 block 710352 (2021-11-19) Logo of gulagu.net/, a "Russian anti-corruption, anti-torture human rights organization and website"[ref] Two-stage P2SH inscription.
Gulagu.net people
. tx 36e7f004ff22aa1146a00705d166fbca64d174c472a5296ed1f38d4749a74e10 block 710354 (2021-11-19). Rightmost Vladimir Osechkin. Two-stage P2SH inscription.
Low resolution GIF screenshot of the Bitcoin whitepaper intro
. tx cad2c46b0f7feb56191f2ab7d8ed59184615cbf0ca46af8c8b5a21a2045a42d2 block 724270 (2022-02-21). Inscribed with P2FKH.
data:image/jpeg;base64tx 976e0766ebe0528d44595170f83f46ab1304c0a3b809f16454ee9be0e816e3a3, block 921133 (2025-10-28) contains an OP_RETURN encoded MP4 AI generated video of Bitcoin Core developer Gloria Zhao standing up and showing her buttocks. This transaction takes up most of the block with an Ethereum tatoo on her lower back. Presumably it is from someone criticizing Gloria's design choices regarding inscriptions on the blockchain. Also mentioned at:
TODO decode:
- get all from Data Insertion in Bitcoin's Blockchain by Andrew Sward, Vecna OP_0 and Forrest Stonedahl, some are missing. TODO list then explicitly here
- 6fa03193609f6506c2fa76540fa9930adf68d50b21c942434a90486a694ccacd contains a JPEG in its input script but a bit broken. The script contains a single constant. We could not decode it by looking at nearby transactions either
Cool data embedded in the Bitcoin blockchain cryptograffiti.info by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16twitter.com/cryptograffiti (marked as joined March 2014)
At some point it stopped using Bitcoin mainline and moved to Bitcoin Cash instead: www.newsbtc.com/news/bitcoin/cryptograffiti-rejects-bitcoin-core-bch-now-available-payment-method/ and therefore became useless. Existing indexes seem to have been broken as well.
Also, based on the timing of Figure "Erich Erstu", this service may be responsible for a large part of the raw JPEG images present in the blockchain from block 416527 (2016) onwards. This is also suggested by the comments at Figure "Tank Man".
A Quantitative Analysis of the Impact of Arbitrary Blockchain Content on Bitcoin gives the interesting insight that all its transactions seem to return change/fees to one or two given addresses, thus making it very easy to list all their uploads if they were consistent! So all we need are some starting points, which we have mostly due to ASCII mentions of the site on known inscriptions, all of which have a few common spent addresses at the very end:so we just have to solve get all Bitcoin transactions from and to a given address and we are done. Blockchair shows about 800 entries as of February 2024, between 4f94f97eb156b8563a213bb292314a0bd9c95b39afc521fc5965d050daab2a78 (2014-03-02) and ac5f4ea03597b43a72fb8ab42bd5384629f87f4f4abc534f38b8c15148ccaf9f (2017-10-12): blockchair.com/bitcoin/outputs?s=time(desc)&q=recipient(1MVpQJA7FtcDrwKC6zATkZvZcxqma4JixS)
- 4c903a377addab7c1e35a685d3dabc664199e406374b1e5ce2fc59e78fb5b754: 1MVpQJA7FtcDrwKC6zATkZvZcxqma4JixS
- 87aad85c6cd75a516789f364637d243c668e3424d031ae510e43c6edfe6ed206: 1MVpQJA7FtcDrwKC6zATkZvZcxqma4JixS
- c206e8fff656f07b27dac831ef9b956792bae4e76a2cb43f14f49f0298bf2c2f: 1MVpQJA7FtcDrwKC6zATkZvZcxqma4JixS
- ca4f11131eca6b4d61daf707a470cfccd1ef3d80a6f8b70f1f07616b451ca64e: 1MVpQJA7FtcDrwKC6zATkZvZcxqma4JixS
Other related transactions:
- tx 87aad85c6cd75a516789f364637d243c668e3424d031ae510e43c6edfe6ed206 block 474652 (2017-07-07) via cryptograffiti.info the default pandoc markdown pandoc.org/try markdown tutorial string! First, unseen in our ASCII dumps due to UTF-8 encoding::followed by:
Unicode test: `Ä Ö Õ Ü ä ö õ ü`.And if ends with:An h1 header ============ Paragraphs are separated by a blank line.Uploaded from http://cryptograffiti.info to demonstrate Markdown rendering.
TODO understand what these are:
- ae92dc4c31943955ad6e3e45a4eb0067f488fdd9aecca65c946460dd2a85488d
- 3020dbd7c850bf8c19ebacf670a2830fe50999a8b2560a202af21d536760eea4
- d65384a21cb1c327cc42416a0b1e2a78ad0296cb7a15312bdcd67ef169ecb309
- a3e3100d2b9a86e310430945c001df97a70626220a9e151208aecbb613f1f152
- a9c82ebc47fabd1eed7eeea7760d0a3c99288af3c3a17e396ec790fc280698a2
- 92bfd5c0fb0f24efa6ca568c4475f44e94dfc8d0d4d5da04dfafc6261bf17f45
- 73c22adb21b93f9220d00d2614a50350824be95b8ea966349e6f35fe5ac5537b
- 099c0fd06d18953c886121ff143ea0a20d0baf29999f424fa1ac707a81cf4987
- 3ad6677303fb6f700a4f2f977fe86e5324e0ddb0d3b33a649e513d7e88904e85
- 31a2ddaf4b146e021246e1f82e28121f5c9c8729620978309004515c7e559910
- adaae897fd286aefb64a69e88a53e9af17ee98611ea595c3c92d038f3274d723
- d8bf48e9ad3de62c695ff34a96e340912bd62e0a0282b94da6386b837c31a30d
It trains the LeNet-5 neural network on the MNIST dataset from scratch, and afterwards you can give it newly hand-written digits 0 to 9 and it will hopefully recognize the digit for you.
Ciro Santilli created a small fork of this repo at lenet adding better automation for:
- extracting MNIST images as PNG
- ONNX CLI inference taking any image files as input
- a Python
tkinterGUI that lets you draw and see inference live - running on GPU
Install on Ubuntu 24.10 with:We use our own
sudo apt install protobuf-compiler
git clone https://github.com/activatedgeek/LeNet-5
cd LeNet-5
git checkout 95b55a838f9d90536fd3b303cede12cf8b5da47f
virtualenv -p python3 .venv
. .venv/bin/activate
pip install \
Pillow==6.2.0 \
numpy==1.24.2 \
onnx==1.13.1 \
torch==2.0.0 \
torchvision==0.15.1 \
visdom==0.2.4 \
;pip install because their requirements.txt uses >= instead of == making it random if things will work or not.On Ubuntu 22.10 it was instead:
pip install
Pillow==6.2.0 \
numpy==1.26.4 \
onnx==1.17.0 torch==2.6.0 \
torchvision==0.21.0 \
visdom==0.2.4 \
;Then run with:This script:
python run.pyIt throws a billion exceptions because we didn't start the Visdom server, but everything works nevertheless, we just don't get a visualization of the training.
The terminal outputs lines such as:
Train - Epoch 1, Batch: 0, Loss: 2.311587
Train - Epoch 1, Batch: 10, Loss: 2.067062
Train - Epoch 1, Batch: 20, Loss: 0.959845
...
Train - Epoch 1, Batch: 230, Loss: 0.071796
Test Avg. Loss: 0.000112, Accuracy: 0.967500
...
Train - Epoch 15, Batch: 230, Loss: 0.010040
Test Avg. Loss: 0.000038, Accuracy: 0.989300One of the benefits of the ONNX output is that we can nicely visualize the neural network on Netron:
Netron visualization of the activatedgeek/LeNet-5 ONNX output
. From this we can see the bifurcation on the computational graph as done in the code at:output = self.c1(img)
x = self.c2_1(output)
output = self.c2_2(output)
output += x
output = self.c3(output) Cool data embedded in the Bitcoin blockchain Ordinal ruleset inscription by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16Ordinals are inscriptions created with the protocol described at: docs.ordinals.com/inscriptions.html The protocol was designed by developer Casey Rodarmor, and shares a few similarities with the AtomSea & EMBII protocol.
The protocol also includes a way to have ownership over inscriptions, effectively creating an NFT system on top of the bitcoin blockchain. AtomSea & EMBII also already had such a system however. In either case, Ciro Santilli couldn't give less of a fuck about who owns some random publicly viewable digital asset.
For whatever reason, orinals became extremelly popular compared to the AtomSea & EMBII format, leading to millions os inscriptions, and 10k+ images as of block 830k. They also started to take up a substatial portion of the available block space.
This in turn led to a lot of child porn rediscussion, and people linking back to this page to view earlier inscriptions: incoming links.
Unfortunately, unlike AtomSea & EMBII and even cryptograffiti.info uploads, most ordinals are designed to be just souless bulk collectibles, as with as much artistic merit as any random collectible card set or postage stamps you may find at a newpaper stall. To make things worse many of them are likely algorithmically generated. Eternal September had truly arrived to the Bitcoin blockchain. As a result, machine learning would be almost essential in order to find interesting uploads amidst such bulk.
Ordinal #0
. This is the first ordinal ruleset inscription: ordinals.com/inscription/6fb976ab49dcec017f1e201e84395983204ae1a7c2abf7ced0a85d692e442799i0. It was made on block 767430 (2022-12-14).The
i0 at the end of the URL above means "inscription 0". This is because a single transaction can have multiple inscriptions.
The ordinals also started taking up large portions of the Bitcoin blockchain:
Apparently the "Taproot" Bitcoin update made it easier to upload image-sized data once again, which had become prohibitively expensive 2023 and much earlier:
- protos.com/did-taproot-ruin-bitcoin-with-nft-inscriptions-of-monkey-jpegs/
- ordinals.com/ appears to index some types of ordinals
Bibliography:
- blocktelegraph.io/parent-child-bitcoin-inscriptions/ parent-child relationshipsi are possible between two ordinals
- ordinals.com/
- bitcoin.stackexchange.com/questions/117018/understanding-how-ordinals-work-with-the-bitcoin-blockchain-what-is-exactly-sto
- bitcoin.stackexchange.com/questions/118405/read-ordinal-transaction-data
- bitcoin.stackexchange.com/questions/118247/can-someone-explain-the-byte-composition-of-an-inscription-reveal-transaction
- nftnow.com/guides/bitcoin-nfts-most-notable-ordinals-inscriptions/
Reference indexer web interface implementation of ordinal ruleset inscriptions.
Source code presumably at: github.com/ordinals/ord
Cool data embedded in the Bitcoin blockchain Ordinal ruleset inscription porn by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16These were found by running object detection software for some porn/nudity detection. We need to run some more, all sex was likely missed: github.com/GantMan/nsfw_model/issues/160
Vagina:
- ordinals.com/inscription/723d753d975cbae01b76fb09d827246ef023a46a408c6c452d22d63a6fed9e72i0 shaved closeup
- ordinals.com/inscription/7462bf4f967633efaaadf136c03bc2ad784941563330b593022d68a7c3460641i0 shaved from the front
- ordinals.com/inscription/8e92eb73fa2d0aa951cb860db29107f02d5c439e97254cde87679bb23fea9d27i0 stretch from the back
Dick photos:
- ordinals.com/inscription/3979478c4b9d0e008344cb7274b10ad9f5ea4d04604c97efc56909b825808d18i0 big white dick
- ordinals.com/inscription/8ae58911078f7aa0dfce457355498abc1a5bdd57f5b05525419466064c3e89c3i0 big-ish white dick small blonde guy. Likely gay porn.
- ordinals.com/inscription/dfb4213ac5a26d581cf6b6516bc8726e699ac632f0722c97eb48cfbe6b1e3eb6i0 hard dick
- big black dick Bitcoin memes
Anus:
- #668 ordinals.com/inscription/bb6f577e30e6840dce0474f3c3c55134404688e844982a49161502d3d69e322di0 male asshole open shock porn, this realtively early inscription got some attention:It happened soon after the notable Figure "Ordinal #652", and it likely tried to follow the surge of interest from its predecessor.
- ordinals.com/inscription/31d03361ca6bf998e0623763a87d2f776b33a50504bc3a9bbf128e96d97418b9i0 female open blackhole
Lingerie:
- bitcoinlambos.eth ads
- GenAI blondes in lingerie:
- ordinals.com/inscription/41250e039f9f1fdf9a05a3775d1a94a35bb46481a66687570f5db98ab7d00501i0 serious white bikini
- ordinals.com/inscription/bc361a8978e309d3c5b4212f35c48c74396315ee4c10a7e2f17427264d3178c6i0 Jenna Jameson 80's style photo shoot at at the beach. More at www.forumophilia.com/topic462690.html.
- ordinals.com/inscription/647b0cafe5a6fc545e40b6c1bab910c43adfe6b372fee0cc65d0aef9e470d820i0 Bitcoin carnival dress? What are the fruits behind and what is written in the back?
Sexy illustrations:
- ordinals.com/inscription/beeff78be2939caa9491b7588a6c3822b40b7e00d74190db1838ae9e0845b761i0 The Source by Jean-Auguste-Dominique Ingres (1856). Classical painting woman with pot.
- ordinals.com/inscription/890fc1226d6ac2dbcd54c8a9292581b903c2ab85f1eec8a0b0951bb32f88a173i0 genai cartoon futuristic big boobs
- ordinals.com/inscription/343699e12e3239357f42eab428a60591b9a40599ce57dfffe29709ed103f426di0 vagina apples
- ordinals.com/inscription/3bc21aa658a36c4e26a1c2631ac280e101d7167ee3fa19debadeb44cff0a9535i0 sexy drawing in lingerie
- ordinals.com/inscription/1a30aef623eac0dad6fc6759dc7c963266cda44ce43cece420bc41a07734b3cdi0 bikini selife onlyfans
- The "Astral Babes" Ordinal ruleset inscription collection magiceden.io/ordinals/marketplace/astral-babes hits positive for breasts and is a pain in the butt:
- ordinals.com/inscription/bd1705c52b601ab93b7e82c07477fed89568e3ebd4719ddf41d73c8be57c2d65i0
- ordinals.com/inscription/bd1705c52b601ab93b7e82c07477fed89568e3ebd4719ddf41d73c8be57c2d65i0
- ordinals.com/inscription/c7cd91355f7306c72d4d69f073f07f089689b7f790fb1c8595ac59eaed115af5i0
- ordinals.com/inscription/4322bcce78f05bb280337892954cce24948c9e0a90cb486c9734f90beae14811i0
Cool data embedded in the Bitcoin blockchain Largest ordinal inscription by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16We can get a list of the ordinals at: archive.org/details/bitcoin-ordinal-inscriptions.csv and then sort them by payload size with:
sort -k6 -n -t, ordinals.csv -o ordinals-sort-size.csvThis shows to us that as of block ~831k, there are 4 ordinals which are far far larger than any other between 3 MiB and 4 MiB, at about 10x larger than then 5th one d115a6e689086fd587e5032f24ba2a8c01f2f87cba758c9d5eb8cf7f6e9a816a
In those cases, a single inscription takes almost the entire block, and the inscribers must have had direct dealings with their mining pool:
- ordinals.com/inscription/4af9047d8b4b6ffffaa5c74ee36d0506a6741ba6fc6b39fe20e4e08df799cf99i0: 3,946,469 bytes (image/jpeg). Bitcoin Magazine cover showing the face of Julian Assange. tx 4af9047d8b4b6ffffaa5c74ee36d0506a6741ba6fc6b39fe20e4e08df799cf99 block 786501 (2023-04-22). Mined by Terra Pool.
- ordinals.com/inscription/0301e0480b374b32851a9462db29dc19fe830a7f7d7a88b81612b9d42099c0aei0: 3,915,537 bytes (image/jpeg). Taproot Wizards ad. This was apparently the largest block ever mined at the time: www.reddit.com/r/Bitcoin/comments/10r6t1l/the_first_4_mb_block_in_bitcoin_history_mined_by/ and received some notice. tx 0301e0480b374b32851a9462db29dc19fe830a7f7d7a88b81612b9d42099c0ae block 774628 (2023-02-01). Mined by Luxor pool.
- ordinals.com/inscription/79b91e594c03c8f06d70c44a288a88a413c540abca007829ca119686a7f979dai0: 3,878,842 bytes (image/webp). "Bitcoin War Bonds". A spoof of something. No time to understand now. tx 79b91e594c03c8f06d70c44a288a88a413c540abca007829ca119686a7f979da block 777945 (2023-02-23). Mined by Terra Pool.
- ordinals.com/inscription/b5a7e05f28d00e4a791759ad7b6bd6799d856693293ceeaad9b0bb93c8851f7fi0: 3,379,682 bytes (video/mp4). Short looping video of a "purple frog drinking from a glass with a straw". Yes you heard that right. TODO context? tx b5a7e05f28d00e4a791759ad7b6bd6799d856693293ceeaad9b0bb93c8851f7f block 776884 (2023-02-16 ) Despite being huge, this received very little attention, the only Google mention is at An overview of recent non-standard Bitcoin transactions by 0xB10C. Mined by Terra Pool.
Cool data embedded in the Bitcoin blockchain Largest text ordinal inscription by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16Text is the only reasonbly interesting content that Ciro Santilli has seen in the ordinals, as opposed to images which are boring. They haven'g found a way to commercialize it yet it seems, thank God. Glad to have researcehd this a bit!
The largest inscriptions with mime
text/* are:- ordinals.com/inscription/e15e19c587985e7dbb0554a6b51df976fdc8d95f4350b759c10b07399d34a7bbi0: 395,253 bytes (2023-02-23): an English translation of Mein Kampf by Adolf Hitler starting from the "Author's preface" section to the end of Chapter V. This seems to be the text: gutenberg.net.au/ebooks02/0200601.txt gutenberg.net.au/ebooks02/0200601.txt. Likely someone trying to be naughty, on the same vein as the "Hitler did nothing wrong" meme from previous eras
- ordinals.com/inscription/daed32652a82fa809be265a9a082d31e186b2b3c0cec80b52dc30e3c1c856c66i0: 394,346 bytes (2023-02-21): Mein Kempt just like ordinals.com/inscription/e15e19c587985e7dbb0554a6b51df976fdc8d95f4350b759c10b07399d34a7bbi0 but with the HTML in a single line, so it is slightly smaller
- ordinals.com/inscription/95f6909988dba38f1140d536c9cc2fdcf635c1522f93834045b093f0d4c2fdd7i0: 394,053 bytes (2023-02-21): HTML heart shaped index of the "Insignia Art" ordinal collection: ordinalswallet.com/collection/insignia-art. That one is kind of cool actually.
- ordinals.com/inscription/8af62aed75fdd9262d36d428a209a162394f0f463bf261ea253d0fb009f2277fi0: 392,866 bytes (2023-09-29) Majjhima Nikāya (Collection of Middle-length Discourses), Buddhist text that is part of the Pali Canon, the most original Buddhist scriptures. EMBII's inscription of the Bhagavad Gita comes to mind. Both Pali transliteration and English translation are present side-by-side.
- ordinals.com/inscription/6352b23c10ef20321d59735d8597af9be96db1bab4b50d728e618a1c5a21a991i0: 391,053 bytes (2023-03-03) "Satoshi Wars" Star Wars-themed browser game. It is a mouse-controlled Pong clone
- ordinals.com/inscription/ab420f90306948937432379dc3f768ef5f826714f53e0cea4e641debef460173i0: 389,001 bytes (2023-02-19) "The Anarchist Cookbook by William Powell". People trying to be semi-naughty as usual.
- ordinals.com/inscription/d8ef417a8575e0fa3da7ab11f9e91ef7582c7275f54f8b9dc587c98c676bd41ci0: 388,196 bytes (2023-02-12)
This fully on-chain document contains all of Satoshi Nakamoto's posts on Bitcointalk.
- ordinals.com/inscription/2a260692fd8aca7fc5f825fe7965c914615fe1d62f7d3e5b078228d43fd93243i0: 387,818 bytes (2023-04-06) an HTML page, title:It seems t oallow you to upload images and reads metadata from the image. Didn't work too well on ordinals.com possibly due to narrow display port. Also it has a funny background music :-)
Welcome to the on-chain Pixogette Metadata Reader
- ordinals.com/inscription/a31b8e3e279a6e28ef49fa4dca54f820abf266223976b778833e8c47991ad403i0: 386,913 bytes (2023-02-19) a cute Bitcoin Cash ad:It appears to contain the entire first fork block of Bitcoi Cash from mainline bitcoin.
#!/bin/bash # # ____ _ _ _ ____ _ # | __ ) (_) | |_ ___ ___ (_) _ __ / ___| __ _ ___ | |__ # | _ \ | | | __| / __| / _ \ | | | '_ \ | | / _` | / __| | '_ \ # | |_) | | | | |_ | (__ | (_) | | | | | | | | |___ | (_| | \__ \ | | | | # |____/ |_| \__| \___| \___/ |_| |_| |_| \____| \__,_| |___/ |_| |_| # # ___ _ _ # |_ _| _ __ __| | ___ _ __ ___ _ __ __| | ___ _ __ ___ ___ # | | | '_ \ / _` | / _ \ | '_ \ / _ \ | '_ \ / _` | / _ \ | '_ \ / __| / _ \ # | | | | | | | (_| | | __/ | |_) | | __/ | | | | | (_| | | __/ | | | | | (__ | __/ # |___| |_| |_| \__,_| \___| | .__/ \___| |_| |_| \__,_| \___| |_| |_| \___| \___| # |_| # ____ _ _ # | __ ) | | ___ ___ | | __ # | _ \ | | / _ \ / __| | |/ / # | |_) | | | | (_) | | (__ | < # |____/ |_| \___/ \___| |_|\_\ - ordinals.com/inscription/f7ece21e1dc74874d7a6e5e11b77941be2db6f383d053242a40b63e0a28445ffi0: 386,819 bytes (2023-02-18) The Illiad Books I-XII
- ordinals.com/inscription/4f5e52115ef0fb4fc2a18cfc7f4caccfb712792c8bc318e71699a86ba4541719i0: 386,655 bytes (2023-08-09) Frogger browser clone
- ordinals.com/inscription/f04c0e94023e51fb995e48235773c77a471289baf44c1a3248d800a0a550c520i0: 385,743 bytes (2023-03-25) A Roguelike browser game
- ordinals.com/inscription/cd432a3e16c4a01db1df6a59b5941a69bd0cf130b24a61248643005f22a939d9i0: 383,098 (2023-02-18) Brave New World
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