For now we are going to keep this site porn-free and only link to prevent bad things from happening, as it might violate GitHub porn policy depending on how it is hosted, and Google may dislike it. Video "What is more obscene: sex or war? scene from The People vs. Larry Flynt".
If illegal porn were to ever be found, we would be unable to acknowledge that, and would just have to silently remove it. Of course, the reproducible nature of Bitcoin Inscription Indexer means that anyone who regenerates the data would immediately see such entries in the diff.
Another issue is that it can be quite hard to determine if porn is legal or illegal, e.g. it can be hard to distinguish legal an illegal ages or revenge vs consensual porn, especially at the low resolutions that you may expect to find embedded in the blockchain. We are generally going to be quite strict about this, and in case of uncertainty on porn legality we will censor first.
OK the list:
- tx 4c903a377addab7c1e35a685d3dabc664199e406374b1e5ce2fc59e78fb5b754 (2016-07-09) contains an animated GIF of a woman pole dancing. She is seen from behind, in revealing blue clothes that show her buttocks. Reproduced at: twitter.com/cirosantilli/status/1755378949117370668. The file contains the following strings embedded into it:and:
This GIF file was assembled with GIF Construction Set from:
Alchemy Mindworks Inc.
This comment block will not appear in files created with a registered version of GIF Construction SetCryptograffiti.info messages now cheaper.
All found so far are also reproduced at: asciiart.website/index.php?art=people/naked%20ladies therefore not blockchain original.
- tx 9206ec2a41846709a59cafb406dd7b07082bfc27664bbc5c6d4df310c1e1b91f block 290848 (2014-03-16) via cryptograffiti.info: sexually aroused naked woman sitting looking forward with legs open showing her vagina. Vagina row as an identifier for Ctrl + F:A bit bellow tx 8367a48e4a863e37b3749bc9c111327b07a7c383ec9b3e7ce8d41949e71e1c10 has a large hand showing the middle finger and wearing a watch:
. `. .\x./-`--...../' ; :Reproduced e.g. at: www.textartcopy.com/ascii-middle-finger.html/"\ |\./| | | | | |>~<| | | /'\| |/'\.. /~\| | | | \ [ | | | | \ | | | | | \ | ~ ~ ~ ~ |` ) | / \ / \ / \ / |--//''`\--| | (( +==)) | |--\_|_//--| - tx 0aab36554c2ac5ec23747e7f21f75dbe3f16739134cf44953ad7ac98927146d6 block 322920 (2014-09-28) via cryptograffiti.info: naked woman laying on her side showing her vagina from under her legs, signed
fsc. Vagina row:Fully reproduced e.g. at www.asciiart.eu/people/sexual/women which credits the art to a "Marcin Glinski" (Polish: Marcin Gliński), possibly this dude github.com/silentlamb/ASCII-Arts | www.linkedin.com/in/marcinglinski)The signature is also listed at www.asciiart.eu/ascii-artists/who-is-who for example.`-:/"-7.--"" _::.-'P::.. \} - tx 66826fccef3e3ebb34abce25bfeff8f9dcaaf88e4707a5576c494d8a1cf1681a block 388714 (2015-12-16) has a one liner penis and breasts:soon followed by more breasts at 37c1e90c6ce3e648c51bfa38cbb43e996cd46e038517596d4c90ca2a6425a701:
jEW B====D ( . Y . )Found by Messages from the mines.jEW ( . Y . )TIDDIES( . Y . )
Cool data embedded in the Bitcoin blockchain Mt. Gox' shutdown by 
Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16Mt. 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 2374f8575f65763caf6909551c131d3ae45399a73aee638bcbccaebdb1219d67 (2014-02-25):
Fuck you MtGox
Fuck you MtGox
Rtx 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.:
- 14x 0.001 BTC transactions starting at tx b170551d4df68d714fa98189c73f61b0c2bc54cafe33a2953fcc0bc11f6aa72a block 287826 (2014-02-26)
- plus one 0.001337 BTC transaction in the middle at tx 6b878716d1d9af0f50de441f318da68121261a5778fd541def4408c0aac531f6 block 287868 (2014-02-26), why not.
- tx e6d4cfbbc45b5e3cfcfa36613b04a8732c7b4606f5dbbd8af3ba06d8f3899fc2 also features a Rickrolling instance.
- tx 10a9bb0625447df044410cf9cd74742ec0bf334d48b4b1f93c10a4a60748bb5d also features
Niggerinside a spendable vanity address: 1Niggerw15VezU6rA7jRBuJt9ceg9VL1jh
Cool data embedded in the Bitcoin blockchain 503: Bitcoin over capacity by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16Starting tx a87d406fae047258a12923b3c11a797a5765bd8f868df5c7e9b1cead0e92c9c1: the message:appears about 13 thousand times. WTF happened?
503: Bitcoin over capacity!The first currently known instance is as a link right during the prayer wars on block 142573 (2011-08-25) as the miner message:which redirects to www.youtube.com/watch?v=mGDuExhS6Nw&blockchain
Militant atheists, bit.ly/naNhG2 -- happy now?"
Around block block 246k (e.g. 27b7c526489dac8245747fa1c425a2e3eb07dea57b294eb4ae583fec9b859fcf, 2013-10-17) we note several transactions starting with a XML format followed by lyrics also base64 encoded as part of the XML metadata. Hidden surprises in the Bitcoin blockchain by Ken Shirriff (2014) was not able to identify the exact format either. At twitter.com/EMBII4U/status/1655831533750562816 EMBII mentions that this was part of an upload test.
<CG SZ="1156"><MG>... the first one being 0b4efe49ea1454020c4d51a163a93f726a20cd75ad50bb9ed0f4623c141a8008 As mentioned not very clearly at www.righto.com/2014/02/ascii-bernanke-wikileaks-photographs.html#ref12 the content of the first <MG><payload></MG> is a Base64 encoded stringCatagory: Poetry
Title: Never Gonna Give You Up
Performer: Rick Astley
Writer: Mike Stock, Matt Aitken, Pete Waterman
Label: RCA Recordstx d29c9c0e8e4d2a9790922af73f0b8d51f0bd4bb19940d9cf910ead8fbe85bc9b (2013-11-13) contains a plaintext Rickroll lyric in an output script via OP_RETURN.
tx 15b11e8d4e5b9425f024b381ba0cb7a54a35e52389bb4855f505772ce685b39c (2014-06-24): starting from this transaction, the lyrics were inscribed several times via input scripts. Then again:They were mega obnoxious!!! Who does this kind of crap for more than one year!!!
- 8bb9db70e24202fdfd0e48b57a11a407e6c8c0e76d879634b801b4345b8810b2
- b881afa519804a3c93a3c99481517ca8ae070b84c04e8e7a2bfb808e043f9771
- 70c8405bd0ec10bea49b78a819dfbf46c1082e7e620588f9da65a90b71e52bbd
- fc4e382793757858bec4b87527caa4bf2e6f71bb2f5a77bb41a45ddb9ed9d409
- f011e71b711aa54a0c824244fff83fb8b1e1921804624fa0523a6e61612b7f6f
- a8691cdbca5b82e4e48812e48b7a09e4757801fd3909a09975de957d1bfb52dc
- d8946aa464be464674bba6d15729d75572ec75dda49fe7ff0ede1a25ca054941
- d02864cd57c9d041dbd9d6f24327f347b92697a8bc3c86cdf8b738063c6ad002
- 9b78962d840f1ff681e5042264e4d0359cda98ce49d97569df14ce956622b966
- 7bdc22fb35f0a8eb6241782a306a8904fb6f793126ff106a04a96f9f223cb8e1
- e24a4085c54a6362e615f8eab758c12d80e488b73757e6d2b8ab6bfc8be7007e
- 4257f4980955d8376ee1c6bccb4396da726e4ae13d758e47dc4e0775019723f5
- a09b49e9374d43386a6a986944e3dcf515c7e1c38324836df5333b8adbe57797
- 03096688dbb874f7c571691e4241a298284bf4184be339b148f1b48f383a1d7c
- 62f8b228b6126354736d36d9f3b91882bb81eca7702b74fba6471abc7db96a03 (2015-09-30)
China stuff is mentioned at: cirosantilli.com/china-dictatorship/bitcoin-blockchain.
Cool data embedded in the Bitcoin blockchain Interesting transactions by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16This is about transactions that are interesting not because of their inscriptions, but for some other reason, such as transaction size, etc.
Cool data embedded in the Bitcoin blockchain The largest transactions in the Bitcoin Blockchain by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16- bb41a757f405890fb0f5856228e23b715702d714d59bf2b1feb70d8b2b4e3e08 999,657 bytes. Joins a bunch of tiny inputs into a single output
- 623463a2a8a949e0590ffe6b2fd3e4e1028b2b99c747e82e899da4485eb0b6be and 5143cf232576ae53e8991ca389334563f14ea7a7c507a3e081fbef2538c84f6e both have 3,075 outputs of 1 satoshi each and a single input. We were not able to identify any meaningful data in it,
filejust saysdata, and there aren't long ASCII strings. However, the outputs were unspent as of 2021, which suggests that they might actually be data.
Analysis of some of them follows.
- dd9f6bbf80ab36b722ca95d93268667a3ea6938288e0d4cf0e7d2e28a7a91ab3 has 13107 with payload 256KB in size, but some of them at least have been spent: www.blockchain.com/btc/tx/dd9f6bbf80ab36b722ca95d93268667a3ea6938288e0d4cf0e7d2e28a7a91ab3 therefore it's not data.
filesays their payload is a DOS executable, but it must be a coincidence
Cool data embedded in the Bitcoin blockchain A Quantitative Analysis of the Impact of Arbitrary Blockchain Content on Bitcoin by Matzutt et al. (2018) by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16Semi-boring academic overview, but without reproducibility, or in a way that is too hidden for Ciro to have the patience to find it out.
Claims 1600 files found.
Mentions some upload mechanisms, notably AtomSea & EMBII and Satoshi uploader.
Cool data embedded in the Bitcoin blockchain Other blockchains by Ciro Santilli 40 Updated 2026-03-19
Ciro Santilli 40 Updated 2026-03-19- Namecoin
- nmc.vision/ by x.com/punk3606 is basically the same as this project but for Namecoin: the dude is trying to make database with all namecoin inscriptions ever.
- "Quantum" is an image created by artists Jennifer and Kevin McCoy which Kevin embedded on Namecoin in 2014. As such, it is a relatively early example of inscription. On June 2021 it sold for more than one million dollars at an auction at Sotheby's to NFT collector sillytuna. Bibliography:
- Ethereum
- reidjs.medium.com/top-6-weird-innovative-and-hilarious-findings-in-the-ethereum-blockchain-83dbbca461ca Top 6 Weird, Innovative, and Hilarious findings in the Ethereum Blockchain by Reid Sherman (2018)
- www.ethereumhistory.com dude is reverse engineering some early contracts. It is cool that in Ethereum, every contract is something that you can reverse engineer. Announced e.g. at: www.reddit.com/r/ethereum/comments/1ro4bt9/ive_been_reverseengineering_ethereums_earliest/
- Monero: as of January 2024, Ciro downloaded the blockchain and
strings -n20 -sdidn't seem to have not even a single ASCII art, it is quite sad. Bibliography:
By Ciro Santilli:
- 2021-04-13 twitter.com/cirosantilli/status/1382067162492366854: main initial announcement on Twitter. twitter.com/mikko, who has 209.9K followers and a Wikipedia page: Mikko Hypponen hearted the tweet s2
- 2023-01-21 twitter.com/cirosantilli/status/1749172304259535063: improvements to the Prayer wars
- 2024-02-07 twitter.com/cirosantilli/status/1755378931446739373: large-ish update with new items and improved organization
- 2024-03-31 twitter.com/cirosantilli/status/1774531934305071295: binwalk discoveries, start poking a bit into ordinal ruleset inscriptions
- 2024-04-04 twitter.com/cirosantilli/status/1775805941885108392: largest text ordinal inscription
By others:
- 2021-04-15 news.ycombinator.com/item?id=26801067 (96 points) on Hacker News. Reached position 16 at one point: archive.ph/L0Fte and led to about 5k views total. Ah, Ciro could watch that Google Analytics realtime view go bling all day long. Narcissism is a bitch.
- 2021 cryptonewmedia.press/tankman-image-on-bitcoin-blockchain/ by user igadjeed
- 2022-01-23 news.ycombinator.com/item?id=30050479 "Abuse and Harassment on the Blockchain", comment-mid thread
- 2022-01-24 www.reddit.com/r/Buttcoin/comments/sbw0se/when_i_heard_about_nfts_i_thought_they_were/hu2uk8g "When I heard about NFTs, I thought they were stupid, but then I watched a video explaining how they work, it really changed my perspective", comment mid-thread
- 2023-02 lots of Twitter backlinks as a result of ordinal ruleset inscriptions:
- 2023-02-03
Video 1. . Source. Features Marijuana plant and Rickrolling sections. He seems to be a finance guru. - 2023-02-07 twitter.com/privateid_ntity/status/1622814063331004421
- 2024-01-18 twitter.com/pete_rizzo_/status/1748049913286447355 by Rizzo, The Bitcoin Historian (81k followers, mid-thread)
- 2024-12-29: x.com/lopp/status/1873453363523932630 by Jameson Lopp (492k subscribers)
- ? cloudhiker.net/ A hand curated and categorized list of interesting links by Kevin Woblick. Only allows users to visit a random one per category, so we can't get proof of backlink, this was noticed through Google Analytics.
- 2025-03-18 Bitcoin Burn Addresses: Unveiling the Permanent Losses and Their Underlying Causes
The mention of this project is brief:Announced at:Ciro Santilli maintains a Web page listing arbitrary data embedded in the Bitcoin blockchain. This is the most complete and up-to-date list of arbitrary data we are aware of. However, he does not specifically focus on burn addresses, but on the stored contents.
- 2025-03-28 x.com/punk3606/status/1905295370227155344 quick "this was already discovered" mention on thread x.com/I____felix____I/status/1905291048798106061 where a dude rediscovers Figure "Warren Buffet"
- 2025-07-20 www.youtube.com/watch?v=oFrK2tpat8c Uncovering Hidden Messages in Bitcoin by Th3M0rn1ng5h0w
Data Insertion in Bitcoin's Blockchain by Andrew Sward, Vecna OP_0 and Forrest Stonedahl by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16- digitalcommons.augustana.edu/cscfaculty/1/ Data Insertion in Bitcoin's Blockchain by Andrew Sward, Vecna OP_0 and Forrest Stonedahl from Augustana College (July 2017). Related inscription by the authors: Code "Study Math and Computer Science at Augustana College".
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