28 Sep '14, 4pm

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

about my energy consumption. There's not much physical exertion, so assuming a resting metabolic rate of 1500kcal/day, manual hashing works out to almost 10 megajoules/hash. A typical energy consumption for mining hardware is 1000 megahashes/joule. So I'm less energy efficient by a factor of 10^16, or 10 quadrillion. The next question is the energy cost. A cheap source of food energy is donuts at $0.23 for 200 kcalories. Electricity here is $0.15/kilowatt-hour, which is cheaper by a factor of 6.7 - closer than I expected. Thus my energy cost per hash is about 67 quadrillion times that of mining hardware. It's clear I'm not going to make my fortune off manual mining, and I haven't even included the cost of all the paper and pencils I'll need.

Full article: http://www.righto.com/2014/09/mining-bitcoin-with-pencil-...

Tweets

Mining Bitcoin with pencil and paper: 0.67 hash...

righto.com 28 Sep '14, 4pm

about my energy consumption. There's not much physical exertion, so assuming a resting metabolic rate of 1500kcal/day, man...

Mining Bitcoin with pencil and paper: 0.67 hash...

righto.com 28 Sep '14, 5pm

about my energy consumption. There's not much physical exertion, so assuming a resting metabolic rate of 1500kcal/day, man...

Mining Bitcoin with pencil and paper: 0.67 hash...

reddit.com 28 Sep '14, 8pm

Understood. I think it's a neat on-paper idea, the blockchain is fairly decent technological concept, but it's not going t...

Mining Bitcoin With Pencil and Paper

gizmodo.com 29 Sep '14, 8pm

Bitcoin mining is a key part of the security of the Bitcoin system. The idea is that Bitcoin miners group a bunch of Bitco...

Mining Bitcoins with Pencil and Paper

hackaday.com 29 Sep '14, 11pm

Right now there are thousands of computers connected to the Internet, dutifully calculating SHA-256 hashes and sending the...

Toomim Bros Bitcoin Mining Concern

toom.im 28 Sep '14, 6pm

Located in the Pacific Northwest of the USA, the Toomim Brothers bring decades of experience in electrical and computer en...

This is what mining bitcoin by hand looks like:

This is what mining bitcoin by hand looks like:

motherboard.vice.com 30 Sep '14, 12pm

If you can’t get your head around mining bitcoin with increasing amounts of computer power, don’t even think about doing i...

Brilliant Device Turns Waste Paper Into Pencils

inhabitat.com 29 Sep '14, 7am

The designers make the clever connection between an office’s waste stream and supply needs with a satisfying design that p...

The Rise of Rebittance⁰: Reinventing money tran...

thenextweb.com 28 Sep '14, 5pm

Luis Buenaventura is Head of Product at Satoshi Citadel Industries , a Bitcoin startup operating out of the Philippines. B...

The Rise of Rebittance⁰: Reinventing money tran...

thenextweb.com 28 Sep '14, 5pm

Luis Buenaventura is Head of Product at Satoshi Citadel Industries , a Bitcoin startup operating out of the Philippines. B...