Mathematics and Statistics course of the University of Oxford Updated 2025-07-16
Ciro Santilli's hardware Backpacks Updated 2025-07-16
2024-04: got two backpacks "for free" with the Lenovo reward points from buying the Lenovo ThinkPad P14s gen4 amd, not bad, that was already cheap and now I got some extra swag:The sport backpack has a fatal flaw: no strap to hold laptop in place, wo it just tumbles back and forth as you walk.
- Lenovo Select Targus 16" Sport Backpack: www.lenovo.com/gb/en/p/accessories-and-software/cases-and-bags/backpacks/gx41l44751
- Lenovo Select Targus 16" Mobile Elite Backpack: www.lenovo.com/gb/en/p/accessories-and-software/cases-and-bags/backpacks/gx41l44752. Measured weight: 1070 g
Ciro Santilli's hardware Monitors Updated 2025-07-16
Ciro Santilli's hardware P14s benchmark Updated 2025-07-16
Ciro Santilli's hardware P14s cannot dual monitor on Wayland Updated 2025-07-16
Asked:
On Ubuntu 23.10, under Settings > Displays, Mirror works, but "Join" does not allow to Apply with message:Works on X Window System, it is a Wayland bug.
Changes Cannot be Applied. This could be due to hardware limitations.
Ciro Santilli's hardware WD10EADS-42P6B0 Updated 2025-07-16
Ciro's
nc HTTP test server Updated 2025-07-16As per stackoverflow.com/a/52351480/895245 our standard test setup is:
while true; do
resp=$"$(date): hello\n"
len="$(printf '%s' "$resp" | wc -c)"
printf "HTTP/1.1 200 OK\r\nContent-Length: $len\r\n\r\n${resp}\n" | nc -Nl 8000
done Ripples by ripples Updated 2025-07-16
A Baidu Baike page: baike.baidu.hk/item/層層水瀾/12386243 mentions that the score was published in 1970 by Tao Yimo (陶一陌) in a eponymous score book.
Computer data storage hardware Updated 2025-07-16
Computer Science and Philosophy course of the University of Oxford Updated 2025-07-16
Public landing page: www.ox.ac.uk/admissions/undergraduate/courses/course-listing/computer-science-and-philosophy
A mixed cross department course with the philosophy department. Its corresponding masters is known as Oxford MCompSciPhil. The handbook is together with the computer science one: Section "Computer science course of the University of Oxford".
Computer science and philosophy masters course of the University of Oxford Updated 2025-07-16
Public landing page: www.ox.ac.uk/admissions/undergraduate/courses/course-listing/computer-science-and-philosophy
Corresponding undergrad: Computer Science and Philosophy course of the University of Oxford.
Miner message Updated 2025-07-16
This is opposed to messages that may be left by non miners during transactions.
Miner messages are therefore of course much harder to control on established blockchains, as they basically require consensus in a mining pool to set. Most of them are just ads for the mining pool itself.
Cool data embedded in the Bitcoin blockchain China Updated 2025-07-16
China stuff is mentioned at: cirosantilli.com/china-dictatorship/bitcoin-blockchain.
Cool data embedded in the Bitcoin blockchain IRC log dumps Updated 2025-07-16
tx 210000d1392bec2505d1289e5c39c2039204ff1ecf7eef55f973ccd3111003e1, block 360235 (2015-06-10) and the following transactions have transcripts of a very long developer chat starting with:
TODO purpose? The transcripts are interspersed with developers likely voting for project leadership, and commenting on Gavin.
TODO find original discussion location, these are almost certainly from one of the Bitcoin IRC channels.
Part of the goal of this dump is that the Bitcoin developers have a policy of not allowing logging on their talk channel, and this released it all to the blockchain forever where it cannot be deleted. These might just be more of protests against larger block sizes.
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
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 Trump Updated 2025-07-16
There's a bit of both sides in the 2016 race:
- tx 3aaae4adc68b3768e1a6029987f2aca2479818495c9aee6a86067710806e9c4f: "bEW Trump 2016! Stop the TPP!"
- tx 202ceac7b3e7b990d1961fd2eab18ba5c80c99f10eacc783f14c53ebfdcaee00 "oEW Fuck Obama&Clinton Go Trump!!!!"
- tx 53fcddaa69e79c0fdc4e2cd139bffef341a38d46bb653721d9adf42460b1afae "EW Trump will fail America, like all his businesses"
- data/out/0433.txt:1752:EW FUCK Trump and his supporters. You ppl are the dumbest scum ever.
- data/out/0435.txt:1904:EW TRUMP 2016 !!!!!!!!!!!!!!
- data/out/0437.txt:1150:bjEW FuCk OfF TrUmP!
- data/out/0439.txt:1017:EW trump will trample regulations justly
- data/out/0443.txt:1281:L9,GOD EMPEROR TRUMP WINS THIRD TERM`7
- data/out/0444.txt:2102:L99,TRUMPPPPPPPPPPPPPPP
- data/out/0445.txt:311:L127,TRUMP WILL SAVE THE WORLD.
- data/out/0445.txt:1257:EW Howard not Trump is the actual 45th president.
- tx 2fb07a8f358d690d8717734a48e5daf0ef70ea2d0e3b7c88dace8a5818fcb168 "L299,Trump touched my no-no"
- data/out/0457.txt:8677:EW All of the sheep think Donald Trump is literally Hitler.
- data/out/0481.txt:11481:I kill donald trump!!!!!!
- data/out/0545.txt:1239:}fEW fuck donald trump
- tx 05fce37228c732f4635f79e6f36d028be677404beab497ddace9024fe8e4b517 "EW Heil Trump!He's the true white leader our race need so much since Adolf"
- data/out/0552.txt:14:Trump needs to get impeached and locked up!
- data/out/0666.txt:56:(Trump was impeached for the second time in office.
Create gradient image with ImageMagick Updated 2025-07-16
convert -size 256x256 gradient: out.png
convert -size 256x256 gradient:white-black out.png
convert -size 256x256 gradient:red-blue out.png
convert -size 256x256 radial-gradient: out.png
convert -size 256x256 radial-gradient:white-black out.png Creator of Archive.today Updated 2025-07-16
- drive.google.com/file/d/1JTPVd09NPaGH-KzGv2jU3XXcFiJAoUjw/view some crazy due investigating, let's see how long until it goes down, posted at: Points to:"Alex Conferno" is also brought up: twitter.com/conferno
- www.reddit.com/r/DataHoarder/comments/12trawt/has_anyone_ever_actually_spoken_to_denis_petrov/
- gyrovague.com/2023/08/05/archive-today-on-the-trail-of-the-mysterious-guerrilla-archivist-of-the-internet/. Trended on Hacker News: news.ycombinator.com/item?id=37009598
- gigazine.net/gsc_news/en/20240326-archive-today/
Other mentions of "Denis Petrov":
Crystal detector Updated 2025-07-16
The first diodes. These were apparently incredibly unreliable, especially for portable radios, as you had to randomly search for the best contact point you could find in a random polycrystalline material!!
And also quality was highly dependant on where the material was sourced from as that affected the impurities present in the material. Later this was understood to be an issue of doping.
It was so unreliable that vacuum tube diodes overtook them in many applications, even though crystal detectors are actually semiconductor diodes, which eventually won over!
For a long time, before artificial semiconductors kicked in, people just didn't know the underlying physical working principle of these detectors. What I cannot create, I do not understand basically.
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