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price is defined by buyer and sellers.
sellers wants to sell at 10000 usd per btc.
so if buyer agress to pay that much then the price of btc for that time is 10000 /-
there are lots of bitcoin exchanges where buyers and sellers meet and exchanges bitcoins with either fait currentcy or other crypto currency and this way avg. price of bitcoin is calculated.
there is also one more factor called volume.,
but i hope you get the basic idea, its like our fruit market, sellers specify price and if buyer pays that much then thats the price., if buyer does not agress to pay that much then seller lowers the price., then the btc price is reduced.
good luck
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this thread belongs in meta section.
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yes, that is possible, if they are designed/coded in a way to ignore RBF flag and mark new tx as duplicate tx.,
but i doubt anyone want to ignore higher fees.
if thats the case and if your 1st tx gets mined ,then your 2nd tx will be rejected.
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does the oclvanitygen only works with amd ati readon cards ? or with nvidia cards too ? i tried H:\Downloads\Compressed\vanitygen-0.22-win>oclvanitygen.exe 1admin
Difficulty: 15318045009
Compiling kernel, can take minutes...done!
clWaitForEvents(NDRange,e): CL_OUT_OF_RESOURCES
Device: GeForce GT 610
Vendor: NVIDIA Corporation (10de)
Driver: 388.13
Profile: FULL_PROFILE
Version: OpenCL 1.1 CUDA
Max compute units: 1
Max workgroup size: 1024
Global memory: -2147483648
Max allocation: 536870912 H:\Downloads\Compressed\vanitygen-0.22-win> it ended without giving any error, and i got popup from windows7 , DISPLAY DRIVER STOPPED RESPONDING AND HAS RECOVERED.
what should i do next ? i know my gpu is not much powerfull, but still. after more tries , i got it working., H:\Downloads\Compressed\vanitygen-0.22-win>oclvanitygen.exe -D0:0,grid=1024x1024 1admin
Difficulty: 15318045009
[1.40 Mkey/s][total 24117248][Prob 0.2%][50% in 2.1h] ^C but i am getting almost same or more with cpu. H:\Downloads\Compressed\vanitygen-0.22-win>vanitygen64.exe -k 1admin
Difficulty: 15318045009
[1.50 Mkey/s][total 17031168][Prob 0.1%][50% in 2.0h] ^C then i tried various grid sizes and i got this., H:\Downloads\Compressed\vanitygen-0.22-win>oclvanitygen.exe -D0:0,grid=1598x1598 1admin
Difficulty: 15318045009
clWaitForEvents(NDRange,1): CL_OUT_OF_RESOURCES
clWaitForEvent(clUnmapMemObject,4): CL_OUT_OF_RESOURCES
Device: GeForce GT 610
Vendor: NVIDIA Corporation (10de)
Driver: 388.13
Profile: FULL_PROFILE
Device: FULL_PROFILE
Vendor: NVIDIA Corporation (10de)
Driver: 388.13
Profile: FULL_PROFILE
Version: FULL_PROFILE
Max compute units: 1
Max workgroup size: 1024
Version: OpenCL 1.1 CUDA
Max compute units: 1
Max workgroup size: 1024
Global memory: -2147483648
Global memory: -2147483648
Max allocation: 536870912
Max allocation: 536870912
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either you are super duper lucky, or bad wallet generator code.
looks like wallets random number generator isnt that much random .
try , contacting wallet's support ,
try generating more address if something like this happens again, then defeinetely wallet issue, dont use that wallet.
what wallet generator is that ?
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dang, i knew it, if it can be run on CPU, it can be run on GPU. more GPU more power.
This is not entirely true. There are very significant hardware architecture differences between CPUs and GPUs. CPUs typically only have a few cores, but you can do anything you want with them. GPUs have many cores on them (thousands), but they are optimized for running large numbers of pipelined vectorized instructions in parallel. GPUs also have much less cache per core, and memory bandwidth between the GPU and the rest of the system is also an important consideration if you want to keep all of those cores busy. This is why developers that want to try to make their coin "ASIC-resistant" or "GPU-resistant" use algorithms that require a lot of memory. so you mean its possible to mine using gpu and asic those which are gpu and asic resistant ? define "a lot of memory" ? thanks |
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1. As the number of coins generated increases the complexity/calculation load increases. I assume different currencies are at different complexity levels due to their age and the number of coins generated, so hardware that might be mediocre for BitCoin might be more than adequate for another coin, so I 'm looking for on the complexity/calculation load for various coins.
Actually difficulty increase is not based on how many coins have been "generated", but rather on the amount of hashing power available in the network. The difficulty is set every 2 weeks so that regardless of how much hashing power is available new blocks will be found about every 10 min on average. You are right in your assumption. While bitcoin is really hard to mine, altcoins are a LOT easier to mine. if hashing power decreases, lets say miners goes and mines bitcoin cash instead of bitcoin if mining bitcoin cash becomes more profitable for them., so will difficulty decreases ? or will stall at current level ? who decides this difficulty ? consensus ? thanks |
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if 20 bucks isnt much then burn it.,
if you still want to use it., use some 3rd part tool, to wipre data.,
what it does is, writes 0 and 1 to the usb, all over again and again., many times.,
so its impossible for some one to recover old data from usb.
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there are couple of bottleneck right now, but this does not mean, that they wont be solved., as time goes by.
1) tx confirmation speed.,
i.e it takes from few minutes to couple of days, depending on your fees to confirm your tx and this is not good in real life scenario where you wan to buy something , and need the confirmation as soon as possible.,
btc needs to process as much tx as comes in and it should be quick.
2) inceasing size of blockchain, what happens when btc gets more exposure, like paypal, and tx no. increases., right now, blockchain is 120gb + but if block size keeps gets inceasring, then it will be difficult for average joe to store all the blockchain files . as the size will be in terabytes.
3) bad name
as btc is being used by silk road users because of its nature., it got bad name., more and more big mainstream needs to accept btc so that people will start treating as something useful and not some shady curency used by shady people.
thanks.
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Mining with cpu lasted for like 2-3 years.
There was official letter from Satoshi asking people not to use GPU mining so that more people can participate.
Of course there were people who ignored this and mined with GPUs anyway but it was hard because there was no apps for this so you had to write the programs yourself.
You can't really mine faster than ASICs as they are the most optimized hardware currently available. By definition ASIC is optimized completely only for making bitcoins. There is no higher class of hardware above it. You can only make a faster ASIC.
Do you notice Halong mining, which improve efficiency a lot. When BTC price is low, people does not invest money to design the chips. And when people designed it, alway mining themselves, and sell to you several months later. I heard this rumors a long time ago:) is that why antminer is always takes money upfront and ships antminers 2-3 months later ? |
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CPUs were mining for approximately 2 years before GPU mining started. The first GPU miner was known to keep the mining software to himself and mined a lot of coin at the time before public GPU mining software became available. There was no great outrage about this at the time because bitcoin was only worth a few cents still until GPU mining became publicly available. After that GPU mining was generally quite available through simple GPU miners which I consolidated into the general purpose cgminer application to make it available everywhere. FPGA miners came out about year later but were never popular because the initial cost of purchasing the FPGA miner never offset the savings in electricity they had over GPUs. They did not have significantly higher hashrate than the GPUs. When the first ASICs appeared the following year, their hashrate was so much higher than GPUs that it would have been impossible to hide their hashrate. The highest spec GPU at the time was 700MH and the first ASIC was 70GH. We all could see the sudden rise in network hashrate and difficulty followed it. We also knew who got the first ASIC miner itself and we were watching his hashrate...
damn, this sounds awesome., i like where this is going. how can you tell network hashrate ? and how can you find who owns much/maximum hashrate ? The highest spec GPU at the time was 700MH
was that single gpu or multiple gpus ? indeed 700MH to 70GH was huge jump, i am sure., that guy made shit loads of btcs. even everybody was mining with cpu and difficulty was low. CPUs were mining for approximately 2 years before GPU mining started. The first GPU miner was known to keep the mining software to himself and mined a lot of coin at the time before public GPU mining software became available.
GPU mining appeared roughly 1.5 years after the Bitcoin genesis block, in mid 2010. ArtForz was the first to use it (see ArtForz story here http://www.ofnumbers.com/2014/04/20/how-artforz-changed-the-history-of-bitcoin-mining/) and indeed he did not go public but GPU public mining code appeared very shortly, see, eg. https://bitcointalk.org/index.php?topic=1334.0. In late 2010/ early 2011 GPU mining was already dominating but CPU mining was still possible. First mining pools appeared in late 2010. CPU mining stopped being profitable (although malware bots continued to mine it longer) roughly in Q2 2011. 26,650 bitcoins at today's rate , make more than 200 mil. fuck me, he is smart. even though satoshi could have done same, but he wanted everyone to join/participate. |
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Mining with cpu lasted for like 2-3 years.
There was official letter from Satoshi asking people not to use GPU mining so that more people can participate.
Of course there were people who ignored this and mined with GPUs anyway but it was hard because there was no apps for this so you had to write the programs yourself.
You can't really mine faster than ASICs as they are the most optimized hardware currently available. By definition ASIC is optimized completely only for making bitcoins. There is no higher class of hardware above it. You can only make a faster ASIC.
dang, i knew it, if it can be run on CPU, it can be run on GPU. more GPU more power. anyways., thanks., this is good start for me. |
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brain wallets are always bad., because our mind always chooses easier option becuase it has to keep it in memory i.e. in our brain. that is the reason brainwallet site got closed and majority brain wallets got hacked and funds sweeped. if you still want to use brain wallets then use some salt to make it more difficult to crack or guess., e.g. warpwallets are doing the same., they even have open challenge to break their wallets ., ref: https://keybase.io/warp/ |
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did people started with only cpu ? and not with gpu ?
when did gpu mining started ? i mean how many months/years after initial cpu mining started
what i am trying to understand is,
when majority of people were mining with cpu., did some people started mining with gpu and didnt tell anybody just to mine as much as possible in short time., so that only they will benefit from it ?
did something like that happen ?
because gpu mining is just a piece of software and whoever made it public,only after that people came to know about gpu mining,
there is chance that people were already mining with gpu but secretly.
if thats the case.,
what is stopping from people to mine even faster than ASIC, and not tell anybody ? i mean keep it secret.,
or have we reached at the point, that its not easier for averrage joe to get more speed than ASIC ?
sorry for so many questions and bad english., this struck me while i was trying to find the fastest way to create bitcoin address from sha 256 private key .
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upwork job example:
"I’m looking for a freelancer to create a coin for me within a day."
LOL. id like to think there are better opportunities out there than this
you could make money from this., there are sites and tools which provide servics to create a new coin, including source codes , so you can act as a middle man for this kind of job., indeed ,there are better apportunities., but majority companies have inhouse staff., so you have to start somewhere and sites like upwork are place to start., or here in buy/sell / services section |
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there is tool written in cpp, made by amacilin.,
it does exactly what you are rtying to achivee.
it pushes tx to peers using their ip:port
you can push your tx to as many as peers/nodes as you want. if you have ip:ports list of running nodes.
try to find it in old threads,
google for "amaclin site:bitcointalk.org pushtxtool"
good luck
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default bitcoin-core will not favourize your tx.,
but modified bitcoin-core can help upto some extent.,
that depends what are you trying to do , i mean you could push nonstand tx , tx with 0 fees., but peers connected to your node will reject these tx if they are default .i.e not modified. you can get over it by adding relay node in your peers list.
so you accept non stand tx and push it to relay node, then other peers which are accepting non standard tx will get your tx and can accept it.
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Ive been doing some simple blockchain projects in the past few months. Stuff like creating a wallet, learning to send coins, looking up transactions, etc
Id like to start to turn this hobby into billable hours
Can someone suggest how they made the transition into a paid blockchain programmer?
What kind of work is there and how to break in?
i was looking for someone who could modify bitcoin-core as per my requirements., i wanted some low cost, so i looked on fiverr and upwork. found very few on upwork so you should try posting your profile there . fiverr not so much great, but upwork, people are getting paid by hour. good luck or you can post here in buy/sell / services section. |
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you can keep track of bitcoin-core sw development on github https://github.com/bitcoin/bitcoinand whenever new version realeases, you can update your sw with the latest one., thats what i do. plus you can see announcements threads here i.e. bitcointalk.org |
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