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re: Bitcoin Casinos Release 2012 Earnings
Posted on 1/23/13 at 3:24 pm to WikiTiger
Posted on 1/23/13 at 3:24 pm to WikiTiger
quote:
Miners use expensive hardware (currently GPU's/FPGA's, soon to be ASIC's) and special software to essentially crack codes. This process is very electricity intensive and requires a lot of energy and technical skill. It is not cheap to do.
What problems are being solved? Who created the problems?
This is all very confusing.
Posted on 1/23/13 at 6:19 pm to ellunchboxo
quote:
What problems are being solved? Who created the problems?
This is all very confusing.
https://www.weusecoins.com/mining-guide.php
quote:
During mining, your computer runs a cryptographic hashing function (two rounds of SHA256) on what is called a block header. For each new hash, the mining software will use a different number as the random element of the block header, this number is called the nonce. Depending on the nonce and what else is in the block the hashing function will yield a hash which looks like this:
93ef6f358fbb998c60802496863052290d4c63735b7fe5bdaac821de96a53a9a
You can look at this hash as a really long number. (It's a hexadecimal number, meaning the letters A-F are the digits 10-15.) Now to make mining difficult, there is what's called a difficulty target. To create a valid block your miner has to find a hash that is below the difficulty target. So if for example the difficulty target is 1000000000000000000000000000000000000000000000000000000000000000, any number that starts with a zero would be below the target, e.g.:
0787a6fd6e0782f7f8058fbef45f5c17fe89086ad4e78a1520d06505acb4522f
If we lower the target to 0100000000000000000000000000000000000000000000000000000000000000, we now need two zeros in the beginning to be under it:
00db27957bd0ba06a5af9e6c81226d74312a7028cf9a08fa125e49f15cae4979
Because the target is such an unwieldy number with tons of digits, people generally use a simpler number to express the current target. This number is called the mining difficulty. The mining difficulty expresses how much harder the current block is to generate compared to the first block. So a difficulty of 70000 means to generate the current block you have to do 70000 times more work than Satoshi had to do generating the first block. Though be fair though, back then mining was a lot slower and less optimized.
The difficulty changes every 2016 blocks. The network tries to change it such that 2016 blocks at the current global network processing power take about 14 days. That's why, when the network power rises, the difficulty rises as well.
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