Placentalia Updated +Created
Busy Beaver Challenge Updated +Created
Project trying to compute BB(5) once and for all. Notably it has better presentation and organization than any other previous effort, and appears to have grouped everyone who cares about the topic as of the early 2020s.
Very cool initiative!
By 2023, they had basically decided every machine: discuss.bbchallenge.org/t/the-30-to-34-ctl-holdouts-from-bb-5/141
Spectroscopic notation Updated +Created
This notation is cool as it gives the spin quantum number, which is important e.g. when talking about hyperfine structure.
But it is a bit crap that the spin is not given simply as but rather mixes up both the azimuthal quantum number and spin. What is the reason?
SQL standard version Updated +Created
SELECT (SQL) Updated +Created
UPDATE (SQL) Updated +Created
IRC log dumps Updated +Created
tx 210000d1392bec2505d1289e5c39c2039204ff1ecf7eef55f973ccd3111003e1, block 360235 (2015-06-10) and the following transactions have transcripts of a very long developer chat starting with:
jgarzik: if you aren't near one of the consulates there are some companies that will charge you money to do it...
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.
LGBT culture in San Francisco Updated +Created
Pu Songling Updated +Created
Sometimes you just know that your existence will be remembered for a singular reason. Better than not being remembered at all perhaps.
Romance of the Three Kingdoms Updated +Created
Pi bond Updated +Created
Phillips D400 cordless phone Updated +Created
Takes two AAA rechargeable batteries.
2021-08: rechargeable battery charges were in, nominal marked 1.2V nickel metal hydride, measured as 1.38V and 1.42V.
Base58 messages Updated +Created
Bitcoin addresses are by convention expressed in Base58, which is a human readable binary-to-text encoding invented by Bitcoin.
It is a bit like Base64, but obsessed with eliminating characters that look like one another in popular but stupid fonts like capital "I" and lower case ell "l". As such, any embedded text is rather obfuscated due to this limitations, and people often resort to leet-like replacements such as '1' to represent 'I'.
This seems to be one of the earliest strategies used to encode messages into the Bitcoin blockchain. The first known example appears in 2011. Then starting November 2011, a large number of messages were inscribed n short successsion, presumably by a single person or small group.
The interest in Base58 encoding might have initially arisen with people's desire to have "vanity addresses", that is Bitcoin addresses that have real words in them, much like vanity plates or vanity numbers. Such addresses with long words in them are hard to find while keeping the address spendable, because they have to correspond to a private key. An extreme notable example is:which contains the awkward 13 letter word:
embarrassable
in it. TODO: proof that it is pendable?
Perhaps inspired by this, some people also decided to use Base58 addresses as a way to create more general unspendable inscriptions, even even though the method is much more clumsy and complicated than P2FKHS. There is however a certain art to working under limitations.
Figure 1. . Although it is not solely focused on inscriptions and may also contain functional burn addresses, it is likely that the methods of Khatib/Legout capture the overall trend of base58 inscription counts.
These messages were originally found with: github.com/cirosantilli/bitcoin-inscription-indexer#payload-size-out-utxo-2vals which tracks the largest transactions with unspent outputs.
Bitcoin Burn Addresses: Unveiling the Permanent Losses and Their Underlying Causes later revealed many new ones.
Finding Base58 messages is intrinsically hard for a few reasons
  • the words may be garbled by Base58 leet
  • only very small ammounts of data can be encoded at a time, and all of it contains ASCII, so you can't just "find all long ASCII strings" as we started doing for other ASCII inscriptions a la strings -n20; you have to use some dictionary as a basis
  • the Base58 does not show up raw on the blockchain, as it is just a human representation for the actual binary data that does, so you can't just strings the blockchain, you have to parse it
The interesting following transactions contain base58 encoded messages on addresses, sorted chronologically, and heighlighted either due to their earliness or historical or artistic quality:
Related:
The Hardware of a Quantum Computer by TU Delft Updated +Created
EdX course. Meh! Just give me the YouTube list!!
But seriously, this is a valuable little list.
The course is basically exclusively about transmons.
Video 1.
The transmon qubit by Leo Di Carlo (2018)
Source. Via QuTech Academy.
Video 2.
Circuit QED by Leo Di Carlo (2018)
Source. Via QuTech Academy.
Video 3.
Measurements on transmon qubits by Niels Bultink (2018)
Source. Via QuTech Academy. I wish someone would show some actual equipment running! But this is of interest.
Video 4.
Single-qubit gate by Brian Taraskinki (2018)
Source. Good video! Basically you make a phase rotation by controlling the envelope of a pulse.
Video 5.
Two qubit gates by Adriaan Rol (2018)
Source.
Video 6.
Assembling a Quantum Processor by Leo Di Carlo (2018)
Source. Via QuTech Academy.

There are unlisted articles, also show them or only show them.