Ken Shirriff's blog: Hidden surprises in the Bitcoin ...

One of the team members, Ken Shirriff, a specialist in reverse engineering, said that they have worked out a code that enabled them to mine Bitcoin on one of the first integrated circuit-based computers that were used by the National Aeronautics and Space Administration (NASA)

One of the team members, Ken Shirriff, a specialist in reverse engineering, said that they have worked out a code that enabled them to mine Bitcoin on one of the first integrated circuit-based computers that were used by the National Aeronautics and Space Administration (NASA) submitted by TheCrypto_Trends to cryptocurrency_world [link] [comments]

Congratulations to Ken Shirriff! His proposal for a Unicode bitcoin sign was accepted.

Congratulations to Ken Shirriff! His proposal for a Unicode bitcoin sign was accepted. submitted by khai42 to bitcoinxt [link] [comments]

Ken Shirriff's blog: Bitcoins the hard way: Using the raw Bitcoin protocol

submitted by cryptoz to programming [link] [comments]

Proposal to add the bitcoin symbol to Unicode | Ken Shirriff | Sep 05 2015

Ken Shirriff on Sep 05 2015:
Use of the bitcoin symbol in text is inconvenient, because the bitcoin
symbol isn't in the Unicode standard. To fix this, I've written a proposal
to have the common B-with-vertical-bars bitcoin symbol added to Unicode.
I've successfully proposed a new character for Unicode before, so I'm
familiar with the process and think this has a good chance of succeeding.
The proposal is at http://righto.com/bitcoin-unicode.pdf
I received a suggestion to run this proposal by the bitcoin-dev group, so I
hope this email is appropriate here. Endorsement by Bitcoin developers will
help the Unicode Committee realize the importance of adding this symbol, so
please let me know if you support this proposal.
Thanks,
Ken
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submitted by dev_list_bot to bitcoin_devlist [link] [comments]

Ken Shirriff's blog: Hidden surprises in the Bitcoin blockchain and how they are stored: Nelson Mandela, Wikileaks, photos, and Python software

Ken Shirriff's blog: Hidden surprises in the Bitcoin blockchain and how they are stored: Nelson Mandela, Wikileaks, photos, and Python software submitted by puck2 to Bitcoin [link] [comments]

Proposal to add the bitcoin symbol to Unicode | Ken Shirriff | Sep 05 2015 /r/bitcoin_devlist

Proposal to add the bitcoin symbol to Unicode | Ken Shirriff | Sep 05 2015 /bitcoin_devlist submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Hat Tip to Ken Shirriff--The BTC Unicode Guy--Check out his informative blog and great Bitcoin post.

Hat Tip to Ken Shirriff--The BTC Unicode Guy--Check out his informative blog and great Bitcoin post. submitted by xcsler to Bitcoin [link] [comments]

Congratulations to Ken Shirriff! His proposal for a Unicode bitcoin sign was accepted.

Congratulations to Ken Shirriff! His proposal for a Unicode bitcoin sign was accepted. submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Ken Shirriff's blog: Hidden surprises in the Bitcoin blockchain and how they are stored: Nelson Mandela, Wikileaks, photos, and Python software

Ken Shirriff's blog: Hidden surprises in the Bitcoin blockchain and how they are stored: Nelson Mandela, Wikileaks, photos, and Python software submitted by moon_drone to BetterBitcoin [link] [comments]

Hat Tip to Ken Shirriff--The BTC Unicode Guy--Check out his informative blog and great Bitcoin post.

Hat Tip to Ken Shirriff--The BTC Unicode Guy--Check out his informative blog and great Bitcoin post. submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Ken Shirriff's blog: Mining Bitcoin with pencil and paper: 0.67 hashes per day

Ken Shirriff's blog: Mining Bitcoin with pencil and paper: 0.67 hashes per day submitted by eeickmeyer to techtalktoday [link] [comments]

Ken Shirriff's blog: February 2014 The Bitcoin malleability attack graphed hour by hour

Ken Shirriff's blog: February 2014 The Bitcoin malleability attack graphed hour by hour submitted by glcbitcoin to Bitcoin [link] [comments]

Ken Shirriff's blog: Mining Bitcoin with pencil and paper: 0.67 hashes per day

submitted by Mutjake to mutjake [link] [comments]

Ken Shirriff's blog: The Bitcoin malleability attack graphed hour by hour

Ken Shirriff's blog: The Bitcoin malleability attack graphed hour by hour submitted by bVector to NSL [link] [comments]

Ken Shirriff's blog: Bitcoins the hard way: Using the raw Bitcoin protocol

Ken Shirriff's blog: Bitcoins the hard way: Using the raw Bitcoin protocol submitted by ShawnLeary to JaxBitcoin [link] [comments]

Ken Shirriff's blog: Mining Bitcoin with pencil and paper: 0.67 hashes per day

Ken Shirriff's blog: Mining Bitcoin with pencil and paper: 0.67 hashes per day submitted by seagray to seagray [link] [comments]

6 Most Weird Techniques Used For Bitcoin Mining So Far

6 Most Weird Techniques Used For Bitcoin Mining So Far

This news comes from https://www.livebitcoinnews.com
Bitcoin continues hitting the news for a variety of reasons. It is the most popular cryptocurrency and with increasing acceptance across industries, more people want to enjoy a piece of the pie.By the end of 2018, the global value of Bitcoin reached 66 billion U.S. dollars.
One of the greatest offshoots of Bitcoin’s growth is Bitcoin mining. It is essential for the survival of the cryptocurrency as it deals with creating new bitcoins. It is one of the most popular activities with techies seeking to cash in on the Bitcoin craze. The idea of mining cryptocurrency might sound farfetched, but the investments going into this activity are enormous.
Success as a Bitcoin Miner
The hardware and software required for Bitcoin mining are expensive and this has seen investors injecting millions of dollars into their projects. Miners require specialized computers and software to get the job done. There’s also the high cost of electricity and bandwidth which makes it difficult for everyone to join the fray.
How does Bitcoin mining work? If you want to succeed in Bitcoin mining, you need dedicated processing power, a lot of energy supply, cutting-edge ASIC mining hardware, and a lot of time. In a slow global economy, Bitcoin mining remains a viable income-generating activity. You enjoy insulation from inflation and you don’t have to worry about capital controls.
As the interest around Bitcoin continues, it is interesting to note some of the most brazen techniques Bitcoin miners have tried so far.
1.Using the Apollo Guidance Computer (AGC)
The creation of the Apollo Guidance Computer (AGC) was solely to guide U.S rockets to the moon. It was one of the earliest computers made and it was huge and slow. With computing power in high demand for Bitcoin mining, a restoration team consisting of Ken Shirriff, Carl Claunch, Marc Verdiell and Mike Stewart tried reviving the AGCA for this task. The AGC team was however disappointed by the results. At a hash rate of 10.3 seconds per Bitcoin hash, the team discovered it would take billions of years to mine a Bitcoin block.
2.Mobile Data Mining With Waste Gas
The idea is to install Bitcoin data-mining centers at oil rigs which has a need to vent gas. The data center developers argue that this would generate more revenue than selling fuel. It is also an easier way to reduce carbon print. The Ohmm® mining data center is an alluring proposition and one most miners would pick up.
3.Nuclear Reactors
A report on Forbes says Bitcoin miners harnessing power in a nuclear reactor compromised one of these sensitive installations in Ukraine. Nuclear reactors produce excess energy due to their sheer size. Using this exceeds energy on a profitable venture such as mining bitcoins is a great idea but only with a clear framework.
4.Mosque Data Mining
Bitcoin miners will go to any lengths to find the energy to power their supercomputers. A mosque is an unlikely palace for such an activity but due to a government subsidy of free electricity, Iranian Bitcoin miners now work from these holy places. A government crackdown has not managed to kill the practice.
5.Cryptojackers
While most online hackers want to steal your identity or harm you, crypto-jackers are a different breed. These are hackers interested in the computing power of your network. These computer geeks are so suave that some even hacked the Tesla company cloud and tapped computing power for Bitcoin mining.
6.Leveraging Bitcoin Mining Byproducts
Bitcoin mining systems generate a lot of heat and creative miners now use this to do other things. Some innovative miners heat their homes using this byproduct while others use the same for rum making among other tasks.
submitted by Moustache_Group to BitcoinMining [link] [comments]

NASA’s Historic Apollo Program Computer is Mining Bitcoin

A computer from NASA’s historic Apollo program, which flew onboard the Apollo spacecraft during its trip to the Moon, has been reprogrammed to mine bitcoin.

The Apollo Guidance Computer (AGC) was one of several technological breakthroughs for its time that allowed NASA to send a manned mission into space. The AGC provided guidance, navigation and onboard control for the Apollo flights to the moon, and was one of the first computers to use integrated circuits.

Ken Shirriff, a member of a group of computer historians, published his experience restoring the AGC in a series of posts, including his attempt to have the machine mine bitcoin.
Despite coming from a time when the average computer could fill most of a room, Shirriff says the AGC is under a cubic foot in size and weighs less than 70 pounds.

https://www.cryptoglobe.com/latest/2019/07/nasas-historic-apollo-program-computer-is-mining-bitcoin/
submitted by FastSellerService to BitcoinInfo [link] [comments]

ELI5 SHA-2 cryptographic hash functions and just hash functions in general?

I was trying to learn how bitcoin is mined by looking at the "Mining Bitcoin with pencil and paper" video by Ken Shirriff, and I'm trying to wrap my mind around SHA-2 cryptographic hash functions. How does this work exactly?
I am reading this: http://www.cs.hmc.edu/~geoff/classes/hmc.cs070.200101/homework10/hashfuncs.html
and what I can understand from this is that if you wanted to send a file with sensitive data
Let's say the data is
 a c f 
you could assign a=5, c=2 and, f=9
you would then send
 5 2 9 
and the party receiving the data would then see the three numbers and be able to see you said "a c f"
Is this correct? I probably have extremely over simplified this. Could anyone help?
submitted by theguywithacomputer to compsci [link] [comments]

TIL that it is theoretically possible to mine new Bitcoins by hand with pencil and paper. Technology is a little bit faster, though - about a quintillion times.

This is the best tl;dr I could make, original reduced by 91%. (I'm a bot)
The idea is that Bitcoin miners group a bunch of Bitcoin transactions into a block, then repeatedly perform a cryptographic operation called hashing zillions of times until someone finds a special extremely rare hash value.
The SHA-256 hash algorithm used by Bitcoin The SHA-256 hash algorithm takes input blocks of 512 bits, combines the data cryptographically, and generates a 256-bit output.
Manual mining The video below shows how the SHA-256 hashing steps described above can be performed with pencil and paper.
At this rate, hashing a full Bitcoin block would take 1.49 days, for a hash rate of 0.67 hashes per day.
In comparison, current Bitcoin mining hardware does several terahashes per second, about a quintillion times faster than my manual hashing.
Thus, mining can reuse the result of hashing the first 512 bits, and hashing a Bitcoin block typically only requires 128 rounds.
Summary Source | FAQ | Feedback | Top keywords: hash#1 mine#2 block#3 Bitcoin#4 bit#5
Post found in /todayilearned, /Bitcoin, /Bitcoin, /thenewsrightnow, /DailyTechNewsShow, /bprogramming, /sidj2025blog, /CryptocurrencySA, /math, /Bitcoin, /openbtc, /btc, /BitcoinAll, /blockchainu, /CryptoCurrency, /techtalktoday, /programming, /ReverseEngineering, /crypto, /technology, /netsec, /Bitcoin, /dogecoin, /seagray, /BitcoinMining, /reddCoin, /mutjake, /esbio, /realtech, /hackernews and /justneckbeardthings.
NOTICE: This thread is for discussing the submission topic. Please do not discuss the concept of the autotldr bot here.
submitted by autotldr to autotldr [link] [comments]

Mining Bitcoin with pencil and paper: 0.67 hashes per day

This is the best tl;dr I could make, original reduced by 91%. (I'm a bot)
The idea is that Bitcoin miners group a bunch of Bitcoin transactions into a block, then repeatedly perform a cryptographic operation called hashing zillions of times until someone finds a special extremely rare hash value.
The SHA-256 hash algorithm used by Bitcoin The SHA-256 hash algorithm takes input blocks of 512 bits, combines the data cryptographically, and generates a 256-bit output.
Manual mining The video below shows how the SHA-256 hashing steps described above can be performed with pencil and paper.
At this rate, hashing a full Bitcoin block would take 1.49 days, for a hash rate of 0.67 hashes per day.
In comparison, current Bitcoin mining hardware does several terahashes per second, about a quintillion times faster than my manual hashing.
Thus, mining can reuse the result of hashing the first 512 bits, and hashing a Bitcoin block typically only requires 128 rounds.
Summary Source | FAQ | Feedback | Top keywords: hash#1 mine#2 block#3 Bitcoin#4 bit#5
Post found in /Bitcoin, /CryptocurrencySA, /math, /Bitcoin, /openbtc, /btc, /BitcoinAll, /blockchainu, /CryptoCurrency, /techtalktoday, /programming, /ReverseEngineering, /crypto, /technology, /netsec, /Bitcoin, /dogecoin, /seagray, /BitcoinMining, /reddCoin, /mutjake, /esbio, /realtech, /hackernews and /justneckbeardthings.
NOTICE: This thread is for discussing the submission topic. Please do not discuss the concept of the autotldr bot here.
submitted by autotldr to autotldr [link] [comments]

There is a ton of data stored on the Blockchain including personal messages, articles of interest as well as complete reddit conversations.

Found the data via BitcoinStrings.com whilst browsing Ken Shirriff's Twitter feed.
Here is a screenshot of a reddit conversation that has been saved regarding consensus.
Just figured that some people would find this as fascinating as I have. I knew that people had saved quite a few things on the blockchain already, but never realised there was a site that made it simple to look through. Makes an interesting read.
submitted by TheGift1973 to Bitcoin [link] [comments]

Bitcoin / Blockchain - YouTube Ken Shirriff - YouTube

Ken Shirriff's blog Xerox Alto restoration, IC reverse engineering, chargers, and whatever . How the bootstrap load made the historic Intel 8008 processor possible. Near the end of 1972, Intel introduced their first 8-bit microprocessor, the 8008. Decades later, this processor still influences computing; you probably use an x86 processor that is a descendent of the 8008. One unusual feature of ... Ken Shirriff ist ja so etwas wie der MacGyver des Bitcoin. Wenn es etwas zu basteln, improvisieren oder auszuprobieren gibt, dann macht er es. 80 Sekunden für einen Hash. Nachdem er in seinem letzten Projekt Bitcoins händisch mit Zettel und Stift errechnet hat, ist er nun wieder auf Technik umgestiegen und hat Bitcoins auf einem transistorbasierten, mit Lochkarten programmierbaren IBM 1401 ... Bitcoin mining began with computer processing units (CPUs), and then evolved to use graphics processing units , but with the exponential rise of Bitcoin mining difficulty, the onl About Ken Shirriff I'm interested in computer history and reverse engineering old chips. I am currently restoring a Xerox Alto. Some projects: Wrote the Arduino IRremote library for infrared remotes. Attempted Bitcoin mining on a 55 year old IBM 1401 punch card mainframe. Got six symbols added to Unicode including the Bitcoin symbol (₿). Wrote an article on the first microprocessors for IEEE ... Ken Shirriff is well-known within the bitcoin mining community for turning old-school computers and gaming systems into mining rigs. Shirriff is a true tech wizard that can even write SHA-256 algorithms using only pencil and paper. In 2017, Shirriff turned a Xerox Alto into a mining rig. This is an amazing feat considering that this computer ...

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Bitcoin / Blockchain - YouTube

Sign in to like videos, comment, and subscribe. Sign in. Watch Queue Queue Shirrif, Ken. "Mining Bitcoin with Pencil and Paper: 0.67 Hashes per Day." Mining Bitcoin with Pencil and Paper: 0.67 Hashes per Day. Ken Shirriff's Blog, n.d. Web. 23 Oct. 2015. Shirriff, Ken ... by Ken Shirriff. 7:52. Riflessioni su Bitcoin 1/2 by Intervistelibertarie. 12:25 . Riflessioni su Bitcoin 2/2 by Intervistelibertarie. 13:05. Bitcoin, inaugurato il primo bancomat in Italia: ecco ... Skip navigation Wie und wo man Bitcoins & alle Kryptowährungen kaufen kann ... Ken Shirriff Recommended for you. 7:52. More adventures in replying to spam James Veitch - Duration: 10:21. TED Archive ...

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