Topic: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion - page 7114. (Read 26686376 times)

so. room with all windows shades drawn (better: a closet with no windows/connection to exterior walls). all laptops/cellphones/webcams/smart speakers/smart TVs/voice remotes etc off and batteries/ethernet cables/power cords removed, all wifi disconnected at the sources (you might be amazed how many devices have wifi that you may not know about).. thats ALL of them in the house, not just the room youre in. use casino dice to generate the seed words. all in a sealed room. then a strong passphrase. burn all your work after verifying it all works.

I'm just an old retarded permabull but me thinks that it's not Bawb talking but rather alcohol and well... substances.... 

I only know what we always hoping for 

And what’s your outcome? 

Wonder, will we see a weekend pump or dump this weekend? It feels like we’re set to move in either direction, perhaps violently.

Source: New Scientist — 10 Impossibilities Conquered by Science

Source: New Scientist — 10 Impossibilities Conquered by Science


I would very much like to see the proof regarding the necessity of the Laws of Thermodynamics to be broken in order to brute force a 256-bit key. Is there any link of such proof? I'm a bit concerned about the use of energy to do the calculations.

One of the consequences of the second law of thermodynamics is that a certain amount of energy is necessary to represent information. To record a single bit by changing the state of a system requires an amount of energy no less than kT, where T is the absolute temperature of the system and k is the Boltzman constant. (Stick with me; the physics lesson is almost over.)

Given that k = 1.38×10-16 erg/°Kelvin, and that the ambient temperature of the universe is 3.2°Kelvin, an ideal computer running at 3.2°K would consume 4.4×10-16 ergs every time it set or cleared a bit. To run a computer any colder than the cosmic background radiation would require extra energy to run a heat pump.

Now, the annual energy output of our sun is about 1.21×1041 ergs. This is enough to power about 2.7×1056 single bit changes on our ideal computer; enough state changes to put a 187-bit counter through all its values. If we built a Dyson sphere around the sun and captured all its energy for 32 years, without any loss, we could power a computer to count up to 2192. Of course, it wouldn't have the energy left over to perform any useful calculations with this counter.

But that's just one star, and a measly one at that. A typical supernova releases something like 1051 ergs. (About a hundred times as much energy would be released in the form of neutrinos, but let them go for now.) If all of this energy could be channeled into a single orgy of computation, a 219-bit counter could be cycled through all of its states.

These numbers have nothing to do with the technology of the devices; they are the maximums that thermodynamics will allow. And they strongly imply that brute-force attacks against 256-bit keys will be infeasible until computers are built from something other than matter and occupy something other than space.