mrb

11 ms·

91.
by mrb 2y ago
Edit: someone said it doesn't work for Japan but it does. Every country I checked by hand matches the figures exactly... For Japan the figures are from https://www.census.gov/foreign-trade/balance/c5880.html
92.
by mrb 2y ago
Holy cow! I had to check for myself: there are even more data points on trade balance for all countries at https://www.census.gov/foreign-trade/balance/index.html (whereas @orthonormalist used a partial list from
93.
by mrb 2y ago
I grew up watching foreign movies almost exclusively dubbed. French TV in the 1980s-2000s dubbed everything; it was nearly impossible to watch stuff with the original audio track. And I will say something that will probably surprise most of
94.
by mrb 2y ago
This video is a cool demo. Trying to eyeball it, it seems all of the bend radii (except one) are over 10-20mm so this demo isn't that impressive. The only exception is the very last bend he makes with the weight where the radius is p
95.
by mrb 2y ago
I can't take seriously any written document with a typo in the first words, and of the title nonetheless. Literally the first thing that came to my mind after I read the title was "tranhumanism" must be a new concept unrelate
96.
by mrb 2y ago
By "more functionality around energy management" you mean what? For example if a battery powering a fridge detects a loss of power, it could inform a battery powering less essential things to shut down, so that the user would have
97.
by mrb 2y ago
What a noble mission to make energy independence more accessible like this, even to renters! I read your site, watched the video, but I still don't understand why you implemented a mesh network? Why multiple batteries need it to synchr
98.
by mrb 2y ago
It's not who releases it, it's who is the target that makes the difference. AMD chooses not to sue the researchers, whereas a game console maker would probably sue.
99.
by mrb 2y ago
The 60 Hz grid is why we have HDDs spinning at 7200 RPM. Because of 60 Hz, it was simpler to design AC electrical motors to spin at 3600 RPM or 7200 RPM (1x or 2x factor). When DC motors were made, for compatibility with AC motors, they oft
100.
by mrb 2y ago
" Self-custody [...] wallets are such a horrible idea... " And yet, billions of people do this everyday with (non-crypto) wallets holding banknotes in their pants pockets. And for the most part, it's fine. A crypto wallet on
101.
by mrb 2y ago
"data security and rot resilience only goes for systems with ECC memory." No. Bad HDDs/SSDs or bad SATA cables/ports cause a lot more data corruption than bad RAM. And ZFS will correct these cases even without ECC memo
102.
by mrb 2y ago
I immediately assumed this article was about the French movie Le Corniaud (1965) in which a 2CV falls apart in 250 pieces in an accident—this scene specifically: https://www.youtube.com/watch?v=gnLj5Xo4zBc&t=19s It beca
103.
by mrb 2y ago
You can buy a spool of 100km of "OTDR launch fiber" which is quite compact as it's just raw fiber terminated by two connectors. 100km sells for only $1400: https://aliexpress.com/item/1005006978999338.htm
104.
by mrb 2y ago
Latency is 1ms for a round-trip through 100km of fiber (200km total).
105.
by mrb 2y ago
This is incorrect. USB power delivery does not need the data lines. Negotiation happens over the CC line and Vbus line: "A power-only receptacle Upstream-Facing-Port might only have VBus, GND, and CC pins populated, because they do not
106.
by mrb 2y ago
I suppose covering the LED is a less expensive way to provide the same user experience as hooking an electrical switch to the ThinkShutter to electrically turn off the LED when it's in the "blocked" position.
107.
by mrb 2y ago
On a ThinkPad X1 Carbon Gen 8, it's easily possible record video with the webcam LED off. I did not verify newer generations of the X1 Carbon. Lenovo put a little physical switch—they call it "ThinkShutter"—that serves to phy
108.
by mrb 2y ago
Similarly, this site has subway station layouts for many cities: http://stations.albertguillaumes.cat/
109.
Golden Owl Treasure Hunt, discovered after 31 years(sciencesetavenir.fr)
1 points by mrb 2y ago|1 comments
110.
by mrb 2y ago
This one couldn't have been stolen, because puzzles multiple of 5 (125, 130, 135...) have had their public key already published in 2019 (IIRC), so everyone—the solver and blockchain listeners—has equal advantage. Puzzle #130 uses a se
111.
by mrb 2y ago
It is a coincidence that this happens merely 11 days after puzzle #66 was won (see https://news.ycombinator.com/item?id=41547395 ) since the expected time to solve this puzzle is a few months with a few hundred GPUs.
112.
Bitcoin puzzle #130 solved: 13 BTC ($800k) won; 949 BTC ($60M) left to be won(privatekeys.pw)
4 points by mrb 2y ago|3 comments
113.
by mrb 2y ago
Normal keys can't be cracked as they use 256-bit public keys providing 128-bit security, which is still secure.
114.
by mrb 2y ago
Another good resource on these puzzles: https://privatekeys.pw/puzzles/bitcoin-puzzle-tx
115.
by mrb 2y ago
To avoid this risk: either you solo mine your transaction, or you submit your transaction to a mining pool that will not broadcast it to the P2P network until it is mined. Some pools offer this as a service (eg. https://slipstrea
116.
by mrb 2y ago
Yes, specifically secp256k1
117.
by mrb 2y ago
No private key was posted too early. What happened is the person who spent all the computing power to brute force the 66 bits broadcasted, naively, a transaction to send the 6.6 BTC reward to his wallet. However, when doing so, the public k
118.
by mrb 2y ago
I don't know if other blockchains have these puzzles. You are correct thas this puzzle is brute forcing private keys with a bunch of zeroes, from which a public key can be calculated.
119.
by mrb 2y ago
Sure, here is a nice little presentation on the puzzle: https://rya.nc/forensic-bitcoin-cracking.html The main discussion thread on the bitcoin forum is this but it has a low signal-to-noise ratio: https://bitcoi
120.
by mrb 2y ago
Discussion thread here: https://bitcointalk.org/index.php?topic=1306983.msg64526037#... Bitcoin puzzles are private keys with just a few unknown bits so that anyone can bruteforce them to collect a reward. Puzzle 66 contain

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