Bitcoin wallet linux command line
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33 reviews
It looks like Bitcoin is developing really fast these days, both on the usage and on the technical side. It is trying to solve the problem that currently the standard Bitcoin clients need generate independent new Bitcoin addresses to the user, and store a piece of secret in a wallet file for every Bitcoin address a person has. If that file is gone and not backed up, the person will lose access to those coins permanently.
BIP32 on the other hand can generate infinite number of new address from a master secret, and all of that arranged in a hierarchy that one can create well separated accounts and addresses very easily.
One example is creating a separate wallet for each of the branches of a store, or for different websites a person is working on. Electrum has that in the works I think for the 2. Had to make one myself to try it out. I wanted to make something easy to use as much as possible given the hairy detailssecure, and powerful enough.
For security the keys entered in the page are never transmitted over the network; the created transactions can be checked independently by a 3rd party can decode it with Blockchain.
For power it can use both public keys for querying balance, and private keys for actually preparing transactions; it generates addresses automatically; it has everything needed for transactions within one page, with very little external dependency; have access to advanced functions if needed. It took a few day, it it was too bad to get to a working prototype: The Bitcoin functions, including using the BIP32 keys, are delegated to the bitcoinjs library.
Apparently there are a bunch of forks of the original one at various stage of advancement, and incompatible added features. I have chosen the fork one that looked the most active, by BitGoto import into this project. So far so good, maybe will do some porting of features between the forks later. The site creates the bunch of these addresses starting from the 0th one as computer programming so often start to count from 0.
All of these addresses are checked with the Blockchain. If they did, then check for the spendable coins, and generate some more addresses in the chain. This tries to reduce address reuse and ensure that all addresses used so far are checked. Of course, this is one of the weaknesses of BIP32 — one can never really be sure without a lot of computation or out-of-band communication whether all the addresses ever used with the key are accounted for.
If any spendable coins are found, then the user can create a new transaction. Apparently, though, that is a good way to do it, so fair enough. If the extended public key is used, then the page only knows enough to create an unsigned transaction. If the private key is present, then a proper signed, spendable transaction is made, and ready to be submitted via the Blockchain. The receiving addresses have QR generation too. The incoming BIP32 keys are generated as it is described in the help section of my page: Can see the original BIP32 page for some of the details.
This leaves you with an extended public key something starting with xpub… and an extended private key xpriv…. Should keep the passphrase from the previous step as well, but definitely these two keys. When one of these keys is plugged into the page, it starts to generate the appropriate keys for the two wallets, and the balance shows up.
When any balance is found, a new transaction can be created, and sent off to the network with Blockchain. When that worked, that was a relief. Here are some with higher priorities:. Well, at least the first step is done. All source bitcoin wallet linux command line lamassu bitcoin atm map bitcoin client python bitcoin price live a on Github. Would love to hear from anyone who used it, and what do you think could be improved upon. There were a lot of talks about one more more Bitcoin ATMs like Lamassu coming here to Taiwan, but all of them are months in the future.
There were other people making similar effort, for example the Open Bitcoin ATMbut I felt they fall a bit short and unlikely that I can get the same parts over here. Looks like I still got lucky that one of the big vending machine manufacturers, International Currency Technologies ICT is actually local less than 1 hour on public transport from here, maybe?
Looking around their side, they have plenty of bill acceptors many but not all can do TWD. A few weeks yes, weeks of emailing, and some nudging phone calls I got some useful information out of them.
They had some advice which parts do I need, and how much would they cost. The parts arrived quite quickly as a reference, 3 days agowithin less than a week of the order, because they were in stock. Unpacking is fun, though soon it was obvious that not everything is smoothly on track. The guides attached were barely scratching the surface, contained no information on how to make the units work with the computer i. There was a lot more querying in the emails about related documentation.
Got the windows printer driver for the thermal printer, though managed to use it without that and installing Windows: It seems to be pretty dead, but good enough for initial testing. I was doing the printer testing in Python, and RS is pretty easy in Python, so just bitcoin wallet linux command line lamassu bitcoin atm map bitcoin client python bitcoin price live a together a command line vending machine interface in Python. After an address is read, read the notes of the bill acceptor, and update the sum of received pay.
This is listening on the RS line for specific codes, and replying to tell the bill acceptor what to do i. When the user is finished and signaled that to the interface, calculate the outgoing value, send the payment through a payment server. After the payment is sent, print the receipt with some useful information on it, and a bitcoin logo for good measure.
The current stages of the both the bitcoin vending interfaceand the payment server are open source and online. My purpose of building any such machine is to make it easier to acquire bitcoins, this spreading their usage and increasing their usefulness. Nudged by a number of different news about bitcoinI decided that this is the time to give it a new look and try to learn as much about it as possible.
The value of these coins decided by people exchanging it, between each other, or from bitcoin to currencies or back. Since mining is out of practical reach now, logically there are two ways to get bitcoins: So far for me there were just too many hoops, no matter how much I was jumping.
I find it awesome that it was originally made to trade Magic: The Gathering gaming cards. The price is generally higher than on the other exchanges better for sellersrequires verification to deposit, and as I read before, it has a history of suspending payouts when their cashflow is not good enough for it. I have started the verification just in case, hopefully their Japanese skills ie. Kanji help my Chinese language documents ahead.
If I ever wanted to start my own exchange, for a few minutes it looked like I had found the tool for that in the form of Buttercoinan open source trading platform. But the software development seems to have stopped a few months ago. Learning more about the whole ecosystem, the bitcoin ATM seems to be an even better idea than an exchange. The relevant corners of the internet bitcoin wallet linux command line lamassu bitcoin atm map bitcoin client python bitcoin price live a full with the success story of the not really first bitcoin ATM in Vancouver.
It just makes sense due to its convenience. Robocoin is I think the maker of that ATM, and they look very full featured — as much as I can tell regulatory compliance from gibberish. Lamassu is another vendor, that looks really good, and e.
Now this turned out to be a short, bitcoin wallet linux command line lamassu bitcoin atm map bitcoin client python bitcoin price live a journey to the underbelly of the Internet. The results are falling into three main categories:. The most useful was an Amazon Mechanical Turk style service, where people can fulfill tasks requested by others. Bitcoin wallet linux command line lamassu bitcoin atm map bitcoin client python bitcoin price live a had snapped up I think more than A better paying task is checking profile pictures of some social networking I guess dating website for policy violations.
That was enough of it. Other sites seem to be focusing on advertisements, paying you to visit sites and watch videos. The sites are usually other bitcoin related services trading, bettingthough there were other ones as well, like investing in a poker playing team. Deliberately hurting other sites, as I know these solutions would be used for, is not acceptable.
All in all, this 2 days resulted in 0. I call it a day. One more thing, I found a website where one could mine bitcoin using a Java applet, and turned out I did mine 0. The site turned out to be a scam, though, bitcoin wallet linux command line lamassu bitcoin atm map bitcoin client python bitcoin price live a I think I can consider as those coins were never mine.
Besides the finances, I tried to explore the practical aspects of bitcoin as well, using it day-to-day, or how it could work on the long term based on my understanding. Most things are only as good as they are easy to use and reliable, those are my main questions in general. Will have to figure out how to export and import wallets to other services, though. This two features make it easier to keep the wallet safe against self-harm hard to lose. The official bitcoin-qt client might be the one that does the heavy lifting for the whole network and for the previous two clients as well, so they can be snappy.
I was just horrified that it takes 14Gb of data and almost one whole day of computation to set it up. That data is the total transaction record of the bitcoin network. I cannot even think what will it be like when it will be truly popular. It has a lot of geeky information and tools too. There are a bunch of other ones as well, BrainwalletBitcoin WalletCoinbaseBitaddressand more. Need to digest all of this new information and come up with a good way how to manage and keep safe the coins.
The trickiest part I think is the issue of micropayments. At the moment they are discouraged because the technical architecture of things cannot really handle it. The earning services seem to handle it by grouping multiple payouts into a single transaction, once an hour or once a day. There are a lot of issues ahead, but when it works, bitcoin does an awesome work.
