jm + mining   8

Canaries As Poisonous Gas Detectors
n the late 1890s, [John] Haldane began experimenting on small animals like white mice and canaries [to detect carbon monoxide]. Small animals have faster metabolism rate, and hence show the effects of carbon monoxide poisoning much earlier even in the presence of small quantities of the noxious gas. Canaries are especially good at detecting toxins in the air because of their specialized respiratory system.
carbon-monoxide  gas  safety  canaries  coal  mining  mines  respiration  gas-detectors 
4 weeks ago by jm
Inside a Chinese Bitcoin Mine
The mining operation resides on an old, repurposed factory floor, and contains 2500 machines hashing away at 230 Gh/s, each. (That’s 230 billion calculations per second, per unit). [...] The operators told me that the power bill of this specific operation is in excess of ¥400,000 per month [..] about $60,000 USD.
currency  china  economics  bitcoin  power  environment  green  mining  datacenters 
august 2014 by jm
Hacker Redirects Traffic From 19 Internet Providers to Steal Bitcoins | Threat Level | WIRED
'The attacker specifically targeted a collection of bitcoin mining “pools”–bitcoin-producing cooperatives in which users contribute their computers’ processing power and are rewarded with a cut of the resulting cryptocurrency the pool produces. The redirection technique tricked the pools’ participants into continuing to devote their processors to bitcoin mining while allowing the hacker to keep the proceeds. At its peak, according to the researchers’ measurements, the hacker’s scam was pocketing a flow of bitcoins and other digital currencies including dogecoin and worldcoin worth close to $9,000 a day. “With this kind of hijacking, you can quite easily grab a large collection of clients,” says Pat Litke, one of the Dell researchers. “It takes less than a minute, and you end up with a lot of mining traffic under your control.”'

'In total, Stewart and Litke were able to measure $83,000 worth of cryptocurrency stolen in the BGP attack [...] but the total haul could be larger'
bitcoin  mining  fraud  internet  bgp  routing  security  attacks  hacking 
august 2014 by jm
Proof of burn - Bitcoin
method for bootstrapping one cryptocurrency off of another. The idea is that miners should show proof that they burned some coins - that is, sent them to a verifiably unspendable address. This is expensive from their individual point of view, just like proof of work; but it consumes no resources other than the burned underlying asset. To date, all proof of burn cryptocurrencies work by burning proof-of-work-mined cryptocurrencies, so the ultimate source of scarcity remains the proof-of-work-mined "fuel".
bitcoin  proof  money  mining  cryptocurrency 
may 2014 by jm
Digging for cryptocurrency: The newbie’s guide to mining altcoins
Mining Arscoins, dogecoins and litecoins -- CPU/GPU mining apps and how to run 'em
currency  bitcoin  altcoins  dogecoin  crypto  mining  ars-technica 
march 2014 by jm
Harvard Research Computing Resources Misused for ‘Dogecoin’ Mining Operation
A member of the Harvard community was stripped of his or her access to the University’s research computing facilities last week after setting up a “dogecoin” mining operation using a Harvard research network, according to an internal email circulated by Faculty of Arts and Sciences Research Computing officials.
harvard  dogecoin  bitcoin  mining  misuse  abuse  supercomputers 
february 2014 by jm
Asteroid "mining" with Linux and FOSS
Planetary Resources is a company with a sky-high (some might claim "pie in the sky") goal: to find and mine asteroids for useful minerals and other compounds. It is also a company that uses Linux and lots of free software. So two of the engineers from Planetary Resources, Ray Ramadorai and Marc Allen, gave a presentation at LinuxCon North America to describe how and why the company uses FOSS—along with a bit about what it is trying to do overall.
lwn  mining  planets  asteroids  space  linux  foss  open-source 
october 2013 by jm
Bitcoin Mining Operating Margin
"The graph showing miners' revenue minus estimated electricity and bandwidth costs." -- down to -694% right now, oh dear
bitcoin  via:peakscale  economics  mining  profit  revenue  charts  electricity  bubble 
october 2013 by jm

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