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 37 Updated 2025-07-16
Ciro Santilli 37 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".
Bibliography:
- www.reddit.com/r/BitcoinBeginners/comments/9dlo3w/how_to_write_arbitrary_data_on_the_bitcoin/
- bitcoin.stackexchange.com/questions/73165/how-to-store-arbitrary-data-in-the-bitcoin-blockchain-and-how-can-i-differentiat
- bitcoin.stackexchange.com/questions/32575/what-methods-are-currently-used-to-embed-additional-data-into-the-bitcoin-blockc
"P2FKH" terminology mentioned e.g. at: Data Insertion in Bitcoin's Blockchain by Andrew Sward, Vecna OP_0 and Forrest Stonedahl.
"P2FMS" terminology mentioned e.g. at: Data Insertion in Bitcoin's Blockchain by Andrew Sward, Vecna OP_0 and Forrest Stonedahl.
Surely You're Joking, Mr. Feynman chapter An Offer You Must Refuse (a play on words on The Godfather (1972)) has an interesting historical mention from the early 1950s while at Caltech:
The next day, I had the greatest luck in making a decision. God must have set it up to help me decide. I was walking to my office, and a guy came running up to me and said, "Hey, Feynman! Did you hear what happened? Baade found that there are two different populations of stars! All the measurements we had been making of the distances to the galaxies had been based on Cephid variables of one type, but there's another type, so the universe is twice, or three, or even four times as old as we thought!"I knew the problem. In those days, the earth appeared to be older than the universe. The earth was four and a half billion, and the universe was only a couple, or three billion years old. It was a great puzzle. And this discovery resolved all that: The universe was now demonstrably older than was previously thought. And I got this information right away - the guy came running up to me to tell me all this.
This is a term invented by Ciro Santilli, and refers to a loose set of uncommon Bitcoin inscription methods that involve inscribing one or a small number of payloads per Bitcoin transaction.
These methods are both inefficient and hard to detect and decode, partly because Bitcoin Core does not index spending transactions: bitcoin.stackexchange.com/questions/61794/bitcoin-rpc-how-to-find-the-transaction-that-spends-a-txo. This makes finding them all that more rewarding however.
On the other hand, they do have the advantage of not depending on any block size limits, as their individual transactions are very small.
A quick overview of some developments: research.aimultiple.com/ordinal-inscriptions-history/
Cryptocurrency with focus on anonymity. Was almost certainly the leading privacy coin since its inception until as of writing in the 2020s.
Ciro Santilli has received and held considerable quantities of Monero, notably 1000 Monero donation. so bias alert.
As mentioned at Section "Are cryptocurrencies useful?", Ciro Santilli believes that anonymity is the most valuable feature that really matters on crypto coins, and therefore if he were to invest in crypto, he would invest in Monero or some other privacy coin.
localmonero.co/knowledge/monero-stealth-addresses?language=en gives an overview of the privacy mechanisms:
- ring signatures, which hide the true output (sender)localmonero.co/knowledge/ring-signatures Gives an overview. Mentions that it is prone to heuristic attacks.Uses a system of decoys, that adds 10 fake possible previous outputs as inputs, in addition to the actual input.So the network only knows/verifies that one of those 11 previous outputs was used, but it does not know which one.TODO so how do you know which previous outputs were spent or not?
- RingCT which hides the amounts.
- stealth addresses, which hides who you send toThis forces receivers to scan try and unlock every single transaction in the chain to see if it is theirs or not.The sender therefore can know when the money is spent, but once again, not to whom it is being sent.
Based on en.wikipedia.org/wiki/CryptoNote and like Satoshi Nakamoto created by under the pseudonym "Nicolas van Saberhagen" www.reddit.com/r/Monero/comments/7v2obe/offering_a_bounty_for_a_video_of_the_speech_by/
Coinbase has actually stayed away from trading it even as of 2019 when Monero was the third largest market capitalization crypto because of fear of regulatory slashback: decrypt.co/36731/heres-why-coinbase-still-hasnt-listed-monero. Although it must be said, the value of privacy crypto is greatly reduced when everyone is trading it on exchanges, which require a passport upload to work.
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