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9981  Other / Beginners & Help / Re: bitcoin blockchane on: June 03, 2014, 10:49:45 AM
I don't think it's compressed anywhere.

Think again, though the compressed file is out-dated (last update in Feb 2013) and the https doesn't work. Smiley
https://bitcointalk.org/index.php?topic=145386.msg1542846#msg1542846



Code:
Index of /bin/blockchain/

../
README.txt                                         14-Apr-2014 17:13                2559
bootstrap.dat.torrent                              14-Apr-2014 16:59              167601
bootstrap.dat.torrent.gpg                          14-Apr-2014 16:59              168187
bootstrap.txt                                      14-Apr-2014 17:13                1063

Looks like your information is out-dated Wink
9982  Alternate cryptocurrencies / Altcoin Discussion / Re: Why are new coins distributed to miners? on: June 03, 2014, 10:48:00 AM
-snip-
But your main point is 'the money has to come from somewhere', and for a crypto-currency that's not really relevant, unless you can explain where Bitcoin's 21 million coins come from?
-snip-

My main point is indeed the money has to come from somewhere. If Visa gets more customers because of the lottery part, the value comes from those that previously used Mastercard (lets say there are only those 2). So Mastercard would react and do the same to get the lost customers back. Maybe up the ante and increase the chance a little or some other marketing nonsense. Now we face the same problem as before. Where does the added money come from?
I undetstand that you want to redistribute money. I understand why you consider this fair. But thats not what a currency is about imho. Thats what a social state does. It spends taxes to help those in need. I dont see a way for a currency to handle this intrinsically. Hell even welfare states cant do this properly.
9983  Bitcoin / Bitcoin Technical Support / Re: My wallet so long to sync how can I spped up it ? on: June 03, 2014, 10:00:34 AM
Hi guys,

My customer have a problem wallet, so long to sync : she have core BTC wallet and the BTC are incoming in it.

What the solution to receive the BTC faster?

I told her to copy and move copy "wallet.dat"  in  the folder with multibit.wallet , but looks like doesnt works.

Thanks,

Importing (! not just copy pasta the wallet.dat somewhere and hope it works...) in a slim wallet is the right way to speed this up. Why does this not work?
9984  Economy / Trading Discussion / Re: How does one goes about trading Amazon Gift Cards on: June 03, 2014, 08:00:06 AM
I see some advertisements about trading Amazon gift cards for BTC but how does one does that?

Depends what the ad is/was for. This is a 3rd party deal. Amazon is currently not accepting BTC.


I have an Amazon Gift Card $50 + and I would like to sell it here for BTC and I would use an escrow service but how does the trade happens?

You open a thread in the digital good section and see what offers come in. State that you want to use escrow.

Who sends who first?

The buyer (B) will send the BTC + fees (usually buyer pays them) to the person doing escrow (E).
You await confirmation from E and give code to B.
E awaits confirmation from B that the code is in order.
E now sends BTC to you.

And how is it confirmed?

The buyer will have to confirm this via Amazon.

What if the buyer gets the Amazon GC, uses it and claims that he did not received any money in his Amazon account. In which case the escrower would transfer his BTC back to him?

To avoid this E can redeem the card and make a new one for the same amount. This will cost no fee from amazon.

Is there way to confirm the authenticity of Amazon gift cards prior to purchasing them?

I am not 100% sure but you probably can cancel the redemption. If not you can just generate a new code.
9985  Alternate cryptocurrencies / Altcoin Discussion / Re: Why are new coins distributed to miners? on: June 03, 2014, 07:44:35 AM
Does Visa randomly give away a bunch of money every 10 minutes to those that made a purchase in the previous 10 minutes?  

Would it be a bad thing for you if they did?

Yes. The money visa gives away has to come from somewhere. Same as with your coin btw but lets stay with the visa example. Where could visa get the money from?
- increase tx cost
- lower profit

If you increase the tx cost everyone pays for the lucky ones. Now some have a little more from time to time but you have an overal increase of prices. I think its more fair if the overal prices stay low. This idea sounds like a very bad tax to me. If everyone is giving a little to help the few. Shouldnt those few be those that really need it and not someone random?

Lowering the profit will not happen. Youd have to enforce this by law. But thats out of your reach.
9986  Other / Meta / Re: Cannot post with proxy on: June 03, 2014, 05:40:35 AM
Cannot post with proxy  , why?

Maybe you or some other persons using the proxy have done something terrible and got IP-banned. Wink


He probably forgot that login counts towards the "cant post for 360 seconds rule" or does not even know about it, yet.
9987  Other / Beginners & Help / Re: About the maximum amount of tx per second. on: June 03, 2014, 05:38:41 AM
[...]
3. If bitcoin becomes more and more popular, I wouldn't be surprised to see someone selling blockchain discs or USBs.
That's an interesting idea.
Like they used to sell GNU/Linux distributions once.

You didnt actually buy the distribution but the manual that came with it. Same as today you dont buy the OS but the support for it.
9988  Bitcoin / Bitcoin Technical Support / Re: Viruses in chainstate??? on: June 02, 2014, 10:33:30 PM
Not false positives but at the same time not executable Wink

I posted about this here
https://bitcointalk.org/index.php?topic=557370.msg6206746#msg6206746

They are false positives. The Antivirus just finds signatures of viruses, not the viruses themself.
9989  Alternate cryptocurrencies / Altcoin Discussion / Re: Why are new coins distributed to miners? on: June 02, 2014, 08:27:32 PM
If I invest the majority of (electrical) energy and hashing power, how is it fair that I dont get the majority of the reward?

You will get enough fees to cover those costs, and still make a profit. What more do you need?

This makes no sense. While rereading this I noticed the reply by DeathAndTaxes. I will quote the part I think is most important:
-snip-
Ok then 99.5% won't mine.  Network security would fall massively and it would be trivial to double spend the network.
-snip-
This is an even worse "solution" security of the network would fall off massively or miners would simply demand much higher fees in compensation.  Miners could still game this by including all "real" high fee txs and then filling the block with tx back to addresses controlled by the miner (with high fees = going right back to miner anyways).  Miners could set the reward to be whatever they wanted possibly even higher than the current reward.  Of course lower fee and free tx would never be included in a block, you just created a penalty that punishes miners for including those txs (by directly lowering their gross revenue).

I assume here that the blockreward is still higher than the tx fee reward.

Please read my idea more careful, because it explicitly states it will be equal (or less).

Those who put their time and money into this make it what it is, yet you want to punish them?

They will only be punished if you compare this hypothetical coin to how Bitcoin works. But Bitcoin punishes a much larger group: the actual users, people without mining rigs. They also invest their time and effort (for example in promoting it), you want to punish them?

Ofc I compare your idea you posted in the Bitcoin-section to Bitcoin. If you want to discuss altcoins you picked the wrong place.

The actual user is using the network, nothing else. Where is the promotion when I do a transaction? You assume a certain user here. I assume (yes I do this as well) that the majority of the users, do nothing. The majority is most likely not even reading this board. But neither of us will be able to tell which assumption is correct, so this leads nowhere.
Thus the only people that are provably contributing are the miners.

I think you have a very problematic understanding of "fair".

My view of fair is random distribution among the largest group of people, while still letting miners make a profit. Yours (as a miner) might be a bit different, thats no surprise.

I dont mine. Suprised? Random is not fair, its random. Fair is when I work hard and invest a lot I get a lot. Some can or are willing to invest more than others, but thats a totaly different discussion.
9990  Economy / Services / Re: [PrimeDice] [Highest Paid Signature] Earn up to 2.4 BTC/Month by Posting on: June 02, 2014, 07:39:35 PM
I'm posting here so that I can remember to follow this thread so that I can sign up in a few weeks/months when I get member status.  I can't wait!

I'll also say this: this signature ads at least look pretty good.  Compare to that ritz casino one which was everywhere for a while and was terribly ugly and brash.  These look pretty classy.

No need to post for that you can just click on "watch" or even "notify" on the bottom right or top right of the thread.
9991  Alternate cryptocurrencies / Altcoin Discussion / Re: Why are new coins distributed to miners? on: June 02, 2014, 07:33:45 PM
Satoshi decided to distribute new coins to the miners, and back then that was a fair method to pick a random stranger, so I understand the logic behind it. But nowadays these block rewards don't go to random users anymore, they go to the people who are wealthy enough to own a significant share of the hashing power. Essentially it's making the rich people richer, and that's the exact opposite of what he originally envisioned I suppose?

In the whitepaper it sounds more like an issue with trust. I dont think this was about fairness, but about an online payment system that does not rely on trust of a 3rd party.

Wouldn't it be much more fair to give miners only the TX-fees, and pay a reward to some random stranger (transaction) in that block?

No. I dont even see where this can be fair. If I invest the majority of (electrical) energy and hashing power, how is it fair that I dont get the majority of the reward? I assume here that the blockreward is still higher than the tx fee reward. What you are proposing has nothing to do with fairness. Everyone can "do less", but not everyone can do more. It would be just randomness who gets paid so everyone would do as little as possible while still beeing eligable to get the reward. However you want to determine that. 1 transaction every block? Or does each count? So the more transactions the higher my chance? Wouldnt that be the exact same thing (more money = more btc) you want to stop with your solution?


That way the initial distribution of coins is garantueed to be fair for everyone, since the coins are going to the actual users of the network (which includes also 'the poor'), instead of the big guys.

The "big guys" not only use this network they protect it. The more hashingpower the harder is an attack thus the higher is the value of BTC. Those who put their time and money into this make it what it is, yet you want to punish them? One could easily argue the other way around and propose that unless you have at least x TH/s you are not allowed to use the network since you are not contributing in a reasonable fashion to its safety.

Also those you call big are mostly big because they started early. They took a risk in supporting bitcoin and after a long time the coins are worth something. Why is that not fair? You could have been here. I could have been here. I didnt think bitcoin would work, because I didnt invest enough time in understanding what bitcoin is. "The big guys" did and they found flaws and helped correcting them. They contributed time, money, electricity, know-how.

The way this could work is that the random tx is picked based on the block hash (similar to how the dice sites work). So a miner never has influence on who receives the reward, unless they withhold valid blocks to influence the outcome, which gives them a major disadvantage compared to competing miners (who will publish the first block they find).

And to discourage users from spamming the chain with dummy transactions, the reward should be equal (or lower) than the total amount of fees paid in the block. This causes their EV (expected value) to stay the same, rendering spam useless.
This also discourages miners from including only transactions from friends, since the benefit of sharing the reward will be lower than the profit they could have gained from the extra fees. 

At first sight such a scheme would be very simple to implement, and much more fair. The only downside I can think of right now is that the coins will be distributed more slowly than Bitcoin does right now. And to bootstrap the network there have to be one (or a couple) of empty blocks where the miner gets a reward. No big deal.

Could something like this work in practice? I have a feeling Im overlooking something fundamental, because it sounds to good (and simple) to be true, but I cant figure out where the problem lies in this approach.

I think you have a very problematic understanding of "fair".

9992  Bitcoin / Bitcoin Technical Support / Re: Master public key in another format? Desperate for help for an easy question! on: June 02, 2014, 07:08:01 PM
The first is a hex string, the second is a byte array.  Conversion between the two is pretty standard.  I would google "javascript conver hex to byte array".

HOOORAY I have done it finally!!!
Code:
function parseHexString(str) { 
    var result = [];
    while (str.length >= 2) {
        result.push(parseInt(str.substring(0, 2), 16));
        str = str.substring(2, str.length);
    }

    return result;
}

Thanks. Thank you so very much!.

mmm should I close the thread or just delete it? It is not very informative to this community is it?


You will never know if someone might have the exact same question. Just close it, I also made your code look nice with code tags Wink
9993  Other / Beginners & Help / Re: Understanding Public and Private Keys on: June 02, 2014, 04:26:33 PM
-snip-
locally? are you pointing at cookies?

No, think about a file that you encrypt and send to their server. It can only be decrypted with a password only you know. So they take care of the file, but if you forget the password, they cant help you. That way they private keys are stored online but only encrypted. When you want to do something on blockchain.info you login, the browser downloads the encrypted file and decrypts it on your computer. That way your private keys are not decrypted online.
9994  Other / Beginners & Help / Re: Understanding Cold Storage on: June 02, 2014, 04:22:19 PM
sorry, i mean when i want to move my wallet to another pc or laptop, what i need to do is just copy wallet.dat and import it?

Yes. The wallet.dat is where your private keys are. Everything else is not important. This is only true for bitcoin core though. Other wallet programms or services work differently. E.g. blockchain.info online wallet gives you a set of words like this
Code:
bullet footstep plain thereupon spurring inbound enquiries matured runabout computationally illuminates heeled individualistic insanely exits ferman
that you need to remember. You can actually try these words, its for an account I made for testing, have fun with it.
9995  Other / Beginners & Help / Re: Understanding Cold Storage on: June 02, 2014, 03:39:18 PM
so if someone have my private keys it means he can easily transfer my money to his address without any confirmation from me?

Correct. Thats the whole purpose of the private key and thats why you must keep them private (hence the name). The only reason you have the coins in the first place is because you know that secret and can easily make the public key from that secret. Makeing a private key if you only know the public key is very hard (currently considered impossible).
9996  Other / Beginners & Help / Re: Understanding Public and Private Keys on: June 02, 2014, 03:32:52 PM
damn, i still don't understand the meaning of having public and private key.
could someone explain it with simple sentences?


Private key of A = A can spend the coins
Public key  of A = you can get the address and send coins to A.

If you will a public key is (are many) padlock(s), they allow you to lock the coins for someone else without having the key.
The key to unlock the coins is the private key. There can be several copies of the same private key but thats not wise. Thats why its so important to take care of your wallet. It has your private keys.

so for example i buying pizza, and i pay them using private key?

and if i'm the seller i give them my public key?

Yes.
If you (A) buy a pizza, the person selling the pizza (B) gives you public key B. Now you make a transaction (10,000 BTC for 2 Pizza) and sign it with private key A. Now everyone else knowns (via the blockchain) that you have 10,000 BTC less and B has 10,000 BTC more. Now B can spend the 10,000 with B's private key etc.
9997  Other / Beginners & Help / Re: Understanding Public and Private Keys on: June 02, 2014, 03:13:20 PM
damn, i still don't understand the meaning of having public and private key.
could someone explain it with simple sentences?


Private key of A = A can spend the coins
Public key  of A = you can get the address and send coins to A.

If you will a public key is (are many) padlock(s), they allow you to lock the coins for someone else without having the key.
The key to unlock the coins is the private key. There can be several copies of the same private key but thats not wise. Thats why its so important to take care of your wallet. It has your private keys.
9998  Other / Meta / Re: Question for Trust on: June 02, 2014, 03:03:24 PM
Mods will not help you. Talk to the people that gave you neg. trust.

 https://bitcointalk.org/index.php?action=trust;u=321122
9999  Economy / Trading Discussion / Re: Cryptsy could be working on fractional reserve. on: June 02, 2014, 02:35:37 PM
I don't know if cryptsy has a cold storage.

They do, anything else would be stupid.
ser here:
 https://altcoinpress.com/2014/05/cryptsy-rules-many-of-cryptos-richest-wallets/

Quote
Probably that's not what OP was talking about.

Nope, OP is only seeing a long waiting time and jumps to conclusions. I give a possible reason for the waiting time. OP might still be correct and cryptsy has only shitcoins in storage but no BTC.

Quote
But if coins outside of the exchange are traded inside it, isn't this close to fractional reserve too?  Tongue

How is having a cold storrage outside the exchange? Its -hope so- still the same company. The actual exchange is off-chain anyway.


Cryptsy will be the next Mt. Gox. Mark my words.


quoted for reference.
10000  Local / Anfänger und Hilfe / Re: Antminer S1 günstig zu haben (2 Stück 498$), bin unentschlossen on: June 02, 2014, 01:54:29 PM
-snip-
Das ist doch zu gut um wahr zu sein, oder?

Ist das so?
2 Stück, also:
- 500 USD inkl. Versand + Steuern (unwahrscheinlich, aber gehen wir mal von 500 aus)
- 360 GH/s
- 720 W
- sagen wir mal ,2 EUR pro KW/h (geht evtl. auch günstiger in nem Rechenzentrum, aber dann kommt in der Regel Standmiete etc. hinzu)
- Startzeitpunkt Heute
- keine Poolgebühren
- 10% Difficulitysteigerung

-> https://bitcoinwisdom.com/bitcoin/calculator -> rechnet sich nicht bzw. erst wenn 1 Bitcoin 1118 USD Wert ist.

Jetzt bin ich wirklich am überlegen ob ich zuschlagen soll, was würdet ihr in meiner Lage tun?

Grüße

Meine Zahlung oben mit realistischeren Zahlen austauschen. Strompreis, Transport (Zoll? Steuer?) etc. sollte Dir ja bekannt sein. Rechne das gerne nochmal mit 5 anderen Tools durch und wenn Du irgendwo ne Möglichkeit siehst bei 0 zu landen mach es. Wenn Du bei 0 raus kommst ohne die Hardware zu verbraten hast Du noch die Chance mit dem Verkauf der Hardware minimal Gewinn zu machen.
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