3282
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Bitcoin / Bitcoin Technical Support / Re: Get the address sent from
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on: November 03, 2012, 08:00:26 PM
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I have an address in bitcoind and I would like to receive the first address that bitcoins were sent from in Bitcoin.net.
For example if I have an address 37muSN5ZrukVTvyVh3mT5Zc5ew9L9CBare with a balance of 9.5 coins, I would like to receive the address those coins were sent from. This is a problem since I will have multiple addresses each with a couple of coins and I want to get the addresses the coins were sent from for each address.
The Raw Transactions API will give you this info. Filter the results of listunspent for the output address to learn the transaction ids. Then get each transaction and pull the first input for each. use: getrawtransaction then for the output of that, decoderawtransaction - http://en.bitcoin.it/wiki/Raw_Transactions[Edit: See the next few posts to tell you why there is no "from" addresses with Bitcoin. The right way to know what invoice a payment is for (or what customer sent the payment) is to give out a new address for each transaction.]
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3284
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Bitcoin / Development & Technical Discussion / Re: Problematic block timestamps and number of transactions?
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on: November 03, 2012, 07:36:08 PM
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But does timestamp matters or it's just cosmetics?
It matters in exactly the way that I described. A block with a timestamp too far into the future isn't valid, and a block with a timestamp older than the median of the last 11 blocks isn't valid. [/quote] And timestamp is used in computing difficulty so there it does need to be a sane value, just not down to the correct second off an atomic clock.
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3287
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Other / Beginners & Help / Re: Bitcoin = cash or commodity
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on: November 03, 2012, 05:18:15 PM
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It seems dangerous to me long term for a currency to be both. If Bitcoin weren't used as a currency there would be no demand for them. They are not useful for anything else. Thus they would be of no interest to an investor.
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3288
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Bitcoin / Mining / Re: Is there a REAL guide for starting from the PRINCIPLES?
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on: November 03, 2012, 05:06:44 PM
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I'm trying to find an article or ebook that explains everything in detail. Free download: Introduction to Bitcoin Mining - https://www.coindl.com/page/item/201For example i see this a lot: mining is to find nouce so that sha256(sha256(data+nounce)) < difficulty. Wait a minute, if a hash if unpredictable, It is not unpredictable. sha256(sha256(data+nonce)) will determine the same result every time. What is unpredictable without doing the work is which nonces will result in a hash that results in a low enough value. how can it be quantified and thus be "smaller" than a given amount. I though a hash was just a random set of strings (not a number ). Strings have binary representations. Binary representations can be compared. So there is no difference between a string and a number. The example in this Bitcoin wiki article shows an example of multiple nonces until a low enough hash is found: - https://en.bitcoin.it/wiki/Proof_of_work And if a miner solved a block with only one txn(say #404) in it and another miner solves a block with ten in it which also includes txn #404, then what, will that txn be in both blocks?
Yup, but only one block will end up winning, as eventually the longest chain will include one of those blocks and orphan the others. A miner should work off the block greatest height. If multiple blocks are at this height, whichever block arrives first is the one to mine against.
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3290
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Other / Beginners & Help / Re: Wallet (out of sync) - bitcoin client
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on: November 03, 2012, 12:45:59 AM
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Oh, good then. Is it necessary that I should access it only via 8333?
If they are simply blocking 8333 (unlikely, but possible), you might try this: I tried telnet 178.79.170.173:28333 and it seems to connect, shows a blank screen with the flashing cursor. I forwarded port 28333 to my computer and I changed my bitcoin.conf to include: port=28333 addnode=178.79.170.173:28333
You could also -connect=178.79.170.173:28333 but that would limit that to one connection.
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3291
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Economy / Trading Discussion / Re: CURRENTLY, what is the cheapest way to get BTC?
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on: November 03, 2012, 12:29:24 AM
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I am dealing with very low margins, so I'm trying to keep the cost down but still transact in BitCoins when possible. Then Dwolla to Mt. Gox is likely the cheapest method to get coins. Coinbase is pretty close, surprisingly -- you can lock in the rate right away too.
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3293
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Economy / Currency exchange / Re: Anyone accept WMZ?
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on: November 02, 2012, 06:56:06 AM
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hi there, I'm currently looking for some exchange/individual who will exchange WMZ (to BTC or LR). with btc-e having their WMZ purse locked, it seems like there's no place left that allows WMZ funding.
So if anyone here knows an exchange(r) that still accepts WMZ, I'm sure I'm not the only one interested
There are exchanges that will cash out bitcoins to WMZ, but I'm not aware of any others who will let you buy bitcoins with WMZ. ECurrencyZone will cash out to WMZ: - http://www.ecurrencyzone.net/buy.phpHere's a service (found through Google, so I've no knowledge of them prior) that will convert WMZ to LRUSD: - http://lr2wm.com/reg.php?lang2=english[Update: And another, and they have a path straight from WMZ to BTC: - http://euromoneychange.com ] There are several ways then to convert LRUSD to BTC.
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3295
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Other / Off-topic / Re: Square space in NYC hand fuel there generators so they servers stayed up
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on: November 02, 2012, 05:39:22 AM
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No one was in the building but them, so no. Oh, as long as it is your own employees who get burned to a crisp, then it is fine, I guess. Also how did they make a profit? They get paid the same if they just let the servers go down,
They failed to prepare properly. If they had DR, they would have simply switched over to their hot DR (or started up using a cold DR plan). Instead they tried to save their asses by relying on some people who either most likely weren't aware of the risk or also likely were digging all the attaboy's from their heroic efforts. Nobody's physical safety was at risk if diesel fuel had not made it to the roof. But hauling open buckets with fuel in them to the roof up a stairwell is not responsible. Fortunately nothing happened, but that doesn't make it acceptable.
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3296
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Other / Off-topic / Re: Square space in NYC hand fuel there generators so they servers stayed up
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on: November 02, 2012, 05:20:38 AM
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if anyone has squarespace you should give them like an extra $25 cause that is just epic!!! And huge respect to them.
Hauling diesel fuel in buckets up 17 flights of stairwells slippery because of fuel and water. Would you want to be in a building where they are doing that, and the emergency exit stairwell is where the fire starts? They don't deserve a medal, they deserve to be prosecuted for endangering people's lives in the pursuit of profit.
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3298
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Bitcoin / Bitcoin Technical Support / Re: Bitcoins lost - old backup
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on: November 02, 2012, 12:54:34 AM
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if you had issued tx's *after* you encrypted the wallet then the chances are very slim that the backup of the unencrypted wallet will be of any use Just to clarify, what that is referring to is after encryption, none of the addresses used for change will have existed in the backup that was made prior to encryption. But that doesn't mean the old backup has no value after encryption. Encryption only flushes the key pool, it doesn't touch any bitcoins that were in the old wallet. Only spending those coins after encryption would cause the change to go to new addresses that didn't previously exist. So the old backup could still have some or all of the coins yet. Of course, the encrypted wallet should not be missing anything, so like CIYAM suggested, -rescan Then if things still don't add up, look at the transactions to see if there are any that shouldn't be there.
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3299
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Bitcoin / Development & Technical Discussion / Re: Problematic block timestamps and number of transactions?
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on: November 02, 2012, 12:30:45 AM
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All fine? Working as intended? "Let's just ignore all unconfirmed transactions and get ourself 50 BTCs!" Trust the market. Deepbit doesn't do the work. Miners who do are free to move to another pool. The fees that Deepbit passed up were earned by the next pool. The market works these things out. Also, later this month the block reward will drop to 25 BTC per block. Thus those fees become a larger percent of the miner's proceeds. Right now Blockchain.info shows about a thousand unconfirmed transactions. By not including those transactions, Deepbit is doing a disservice to Bitcoin no doubt. Those miners who hold bitcoins might consider this and send their hashing elsewhere.
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3300
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Economy / Trading Discussion / Re: CURRENTLY, what is the cheapest way to get BTC?
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on: November 01, 2012, 11:09:43 PM
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CURRENTLY, what is the cheapest way to get BTC?
The factors relevant to providing the right answer to that include: - Where are you located (country)? - How much are you looking to buy? - What payment methods do you have available? - How soon do you need access to the proceeds? - Is privacy important? A bank transfer is going to be the cheapest method. In the U.S. you can buy bitcoins at a 1% fee through Coinbase using a bank transfer. The problem there is that they are limiting that to $100 maximum (for now, while they test their algorithms) and that you don't get the coins until the funds transfer is complete (at least two business days). But you do get to lock in the price immediately. - http://www.Coinbase.comDwolla is another inexpensive method to move cash from your bank account to a Bitcoin exchange. The problem with that again is the amount of time involved. But the price is right ... $0.25 per transaction. A cash deposit method can also be inexpensive. BitMe.com doesn't charge for cash deposits. The problem there is they don't have enough sellers at near market price, so you end up overpaying a little when buying coins. That will change hopefully as more sellers trust them but for now that's the limitation: - http://www.BitMe.comBitcoins Direct will accept cash, with no fee, but they have a $500 minimum order size. Also, they are temporarily offline while the part of their business which supplies their coins, FastCash4Bitcoins.com, undergoes a redesign: - http://bitcointalk.org/index.php?topic=87094.0 (Deposit cash at Bank of America, Wells Fargo or PNC, minimum $500) Or you might find a local trade (paying cash): - http://www.localbitcoins.comOr if you are considering a bank transfer, there all kinds of options are available: - http://en.bitcoin.it/wiki/Buying_bitcoins
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