What is an orphaned block? Is that one where there are several fringes and that block ends up on a fringe that gets left because another was solved first?
Two miners might find a block at the same time, and only one will eventually be on the longest chain. The other will be forgotten. The name "orphan" is a bit of a misnomer, because an orphan block has a parent but it has no child (or perhaps no grandchild).
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Blocks are not required to have any transactions in them.
i'm curious about this aspect... but the number of transactions per block is based on what? it's random? It is up to the miner to decide on which transactions to include in the block. A miner is generally not going to leave out any transactions that pay a fee, but she might leave out those that don't. Most, but not all, miners follow the policies in Bitcoin Core. Another consideration is propagation time. Larger blocks take longer to propagate, and that can increase the chances of it becoming an orphan. So, a miner may prefer smaller blocks, such as those without any transactions.
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Blocks are not required to have any transactions in them.
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Don't people realize that if they spend their precious bitcoins they can always buy more? People make it sound like bitcoins are rare or something. I guess if you waste hours every day for a few pennies worth from a faucet, you might think they are rare and hard to obtain, but they aren't because you can just buy them. But its much easier to use btc to buy things online. So i guess i'll buy fewer games today, then i'll buy back the btc that i spend.
Thank goodness, somebody gets it.
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Now you will see that 3 addresses are involved as senders. 19t4Cp3ftH3XTu6c4HhHTTpRP9TxDJVz87 15ZX2yUZio9HeSWUeWubxznQyaYcYFBFzB 1Fo6Uy8JWnV9SnDM5LBnYA8nnCQgbfbyDT
Now could it be possible that these addresses belong to an exchange which is just sweeping coins to one single address, from those 3 different addresses ?
It is difficult to tell. It could be: - An exchange consolidating bitcoins from deposit addresses.
- A user sending bitcoins, and correctly using addresses by not reusing them.
- A coin-join transaction where multiple users send bitcoins in single transaction in order to thwart wallet trackers.
The amount is so tiny that it is probably not the first or third.
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Hmmm, you are about 3 months too late.
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People asking random strangers on the internet how to invest their money should not be investing. It is better to just stay away. But if you really want some good advice, here you go:
You should sell now so that you don't have to worry so much. Buy it back when it is rising and you know that it will never go back down again. (which will never happen)
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Yes, once bitcoin payments become reversible.
That will never happen, but companies like Coinbase and Bitpay may implement chargebacks in their payment systems on top of Bitcoin. Not until the confirmation issue is resolved. I wouldn't want to buy a chocolate bar and have to wait 10-30 minutes until my payment was confirmed. I want to pay and go instantly.
I'd like to see you try to buy a chocolate bar with a credit card.
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Coinbuddy is posting old news articles just to increase his post count for his signature ad. His account needs to be banned.
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What have we learned today?
Bitcoin Core is not for newbies. It is a "reference" client. It is intended to be used to validate Bitcoin features and to provide an example for other clients.
I am a Bitcoin old-timer and I run a full node, but I don't use the Bitcoin Core wallet. There are many much better wallets available. Bitcoin.org should stop promoting the use of Bitcoin Core for newbies.
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The mathematical problem/puzzle/equation that must be solved is this:
Find a number such that the double SHA-256 hash of the block header, which includes the number, is less than the target.
The target is determined by the difficulty.
Interesting. You've explained this in a way that isn't difficult to understand. Would you be able to give a sample of what the number, hash of the block header and target would look like in an equation? SHA256(SHA256(H, N)) < T, where H is the header, N is the solution (included as part of the header), and T is the target. Here is the current target (in hex): 0x00000000000000001717F0000000000000000000000000000000000000000000 If you look at block #353192 ( https://blockchain.info/block-height/353192) you will see that N is 3813908736 and the result of SHA256(SHA256(H, 3813908736)) is 0x0000000000000000092f8a4cec04d9a6a9976139db98362656182fc4470b845e, which is less than the target. Actually, that is a simplified explanation. There are other fields in the header that are modified to get a successful result: the timestamp and the merkle root values in the header are also adjusted.
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Supply=BTC sold at market rates, not limit sells Demand=BTC bought at market rates, not limit buys
Limit orders must be included in supply and demand because market orders are filled by limit orders. However, the bigger point is that supply and demand are curves, and not single values. Supply and demand include all bitcoins that can be traded, which is basically all bitcoins except those that are lost or have not been mined yet. Supply and demand include bitcoins on exchanges as well as those in cold storage.
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The story that the price is dropping because merchants convert to fiat is commonly repeated misconception. The real story is that fewer people are acquiring bitcoins and current holders are spending them. Whether bitcoin holders are selling for fiat or spending on goods doesn't matter. The real issue is that they are not buying more bitcoins to replace they ones the spend. I don't think that the block size will be having any effect upon the exchange rates. Even now, roughly BTC4,000 are being mined daily, but the trade volumes are more than 10 times that amount. The real reason might be something entirely different. IMO, someone is dumping a lot of coins in to the exchanges right now. I don't know who that is. Can be Satoshi... or can be the Mt Gox thief.
I agree that change in the subsidy will not have an immediate effect, but it will have an effect over the long term because it affects the inflation rate.
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None. Your friend is misinformed.
There are other coins that solve more practical problems, such PrimeCoin, which finds a certain kind of prime number, and FoldingCoin, which is rewarded for folding proteins.
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The mathematical problem/puzzle/equation that must be solved is this:
Find a number such that the double SHA-256 hash of the block header, which includes the number, is less than the target.
The target is determined by the difficulty.
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I have used Localbitcoins many times. When you sell bitcoins, your bitcoins are placed in escrow, not the money. After you receive the money, you release the bitcoins. The site is quite clear about waiting until after you receive the money before releasing the bitcoins. Also, there is no escrow@localbitcoins.com. Anyone can pretend to send an email from any email address.
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The main difference is that Blockchain.info provides you with a wallet and Coinbase provides you with an account.
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I would love to see a scheme implemented whereby you could setup transaction forwarding, by destroying the address and replacing it with the address to forward to, so all transactions to the old address would be forwarded to the new address. 1. Is it even technically poss 2. Is it a bad idea? 3. What could be some possible problems with this idea? 4. Is it a security vulnerability? 5. could this be encoded in a transaction somehow?
It would be technically possible by changing the protocol, but it would be a bad idea because it would create information stored in the block chain that could never be pruned. There could also be a problem of circular references. I feel that forwarding should be done by the person and not the miners because it can already be done by the person without requiring special involvement by miners.
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What would happen if someone copied the wrong address into their client and sent coins? Well I know the answer to that. Obviously, the coins would be sent to the wrong account. But then what? What recourse would the sender have to correct the error and if there is no recourse other than tracking down the recipient and convincing them to send the coins back (highly unlikely) ...
Why do you think it is highly unlikely that the coins would be returned? If somebody accidentally sent you money and asked for it back, you would return it wouldn't you? Or, are you a scumbag? It's obvious that there are many people out there who would not return money that was mistakenly sent to them. It's also possible that you could accidentally send coins to an address that is no longer maintained but is still valid. e.g. a defunct exchange's deposit address. As for your second point, I don't mean a typo, hence the reason why the title is "miscopied" rather than "mistyped". I understand that there is a checksum which prevents sending to an invalid address. The scenario which I had in mind was sending to a valid but inappropriate address. For example, if I owned a business with a list of customers and I accidentally copied Bob's address instead of Bill's. Then the coins that should have been sent to Bill would now be owned by Bob. If Bob was a nice person, then he would send the coins back to me or alternatively, to Bill. But there is no guarantee that Bob is a nice person. If it is "highly unlikely" that Bob is not a nice person, then you are dealing with the wrong people. You need new friends and associates if they are "highly unlikely" to be decent people. I guess we live in different worlds. In my world: Me: "Hey I accidentally gave you some money." Bob: "Yeah, I wondered where that came from. Here you go."
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Yes, everyone has its own value for Bitcoin. But, I am asking about market value. I claim that market value of Bitcoin against the Dollar is determined by the amount of Bitcoins vs. the amount of Dollars in a specific market (this is obvious). I think we are bascially dealing with two markets here. One market is inside the exchanges and the other is the real economy. My, not so obvious, claim is that the market value of the Bitcoin against the Dollar is actually different between those two markets.
Any difference would be minimal if the markets are liquid and efficient, especially since the exchange rates are generally used to price goods.
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