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1  Other / Politics & Society / Support cannabis legalization in Switzerland on: January 07, 2018, 10:33:34 AM
In Switzerland there is a new federal initiative emerging that aims to legalize cannabis in the country. I am not personally involved but have already donated a significant amount of currencies. For all you guys out there that want to make the world a better place, now you have a chance to do that with your cryptos. Donate to
2  Economy / Currency exchange / After recovering Trezor, Bitfinex U2F-login fails on: December 16, 2017, 10:52:44 PM
After I recovered my Trezor hardware wallet with the same seed as before, I cant access my U2F enabled Bitfinex account any more.
I do not see how to recover from that. Is recovering the password enough or do I have to reach their support site? Recovering the password halts any withdrawals for 5 days.

Bitfinex handles this situation in their support center.
3  Economy / Exchanges / Bitfinex locked up my withdrawal on: December 08, 2017, 11:52:11 PM
Two days ago I attempted to withdraw my Bitcoin funds from Bitfinex. Since then, my Bitcoins are completely locked up at Bitfinex.
It says : Withdraw approved December 07, 2017 22:58. It is now queued for processing and will complete soon (subject to spending limits of the account).
And I can NOT cancel it, there is no button.
I already submitted a ticket yesterday but no response.

Anybody else experiencing problems like that?
4  Bitcoin / Development & Technical Discussion / Replay protection ; Can it be done like this? on: November 07, 2017, 06:02:06 PM
Is it possible to protect against replay protection by the following simple steps:

1. Send your coins on one side of the forked chain into any address that you own.
2. Wait until the transaction is confirmed.
3. If during that time you get replayed, go back to step one. You still have access to all of your coins since you own the private key.
4. If you are not replayed, send the coins on the other chain to a different address.
5. Wait until confirmed... done, your coins are split.

Is that correct?
5  Bitcoin / Bitcoin Technical Support / Why does this tx not get confirmed on: October 28, 2017, 04:21:28 PM
Does someone have an idea why this tx does not get confirmed?


I do not see what is wrong with it. There is 1$ fee attached to it.

6  Economy / Web Wallets / Which wallet supports's 12-word recovery phrase on: August 02, 2017, 09:35:21 PM
I have made a 12-word backup passphrase that according to gives me full control of my funds. However, I did not find out yet how to convert the passphrase into a private key. I tried sha256[passphrase] but this did not produce addresses holding my funds. Nor did I find any wallet that would let me import the passphrase.

The reason I want to do that is because I want extract the "Bitcoin Cash" from my funds.

Any help appreciated.
Kind Regards
7  Bitcoin / Development & Technical Discussion / Seeking project-partner for revolutionary bitcoin 2.0 project on: November 27, 2016, 11:36:03 PM
Hi guys

Of course the title might be somewhat immodest but it helped to get your attention anyway.

I would like to start a project in the bitcoin space but have not the resources in terms of time and expertise to do it all alone. So I am looking for one innovative minded ambitious partner who is interested to work on a project that might push bitcoin to the next state.

I am talking about implementing a specific protocol that runs entirely on top of bitcoin. It is about tokens, similar as for example counterparty. But I propose a new approach on how to implement such a protocol. Besides that, I already have several well thought-out applications in mind that will make use of this protocol which are in a way quite revolutionary.

I am looking for a programmer, who has a good understanding of how the basics of bitcoin work and thinks has the resources to work on a project that might become something large if successful. The project-idea exhibits some financial perspectives altough to what extend and when it will materialize is uncertain. It is more about implementing a new idea that may become the foundation of a new movement in the bitcoin space.

If you are interested just write something about you and why you think you might make up a good partner for my ideas.

Of course all this has been very unspecific. Once I gain trust in you we can talk more specific.

8  Bitcoin / Development & Technical Discussion / What is the probability of a bitcoin address starting with "11..." ? on: May 14, 2016, 08:11:58 PM
This is not a very important question that some statistics geeks of you probably may answer easily.
I wonder because I am currently writing code that creates a bitcoin address, and this question just occurred to me.

9  Economy / Services / origin of tx_index in API on: May 10, 2016, 10:41:17 PM
Hi everybody

I am toying a bit with the json API from When looking at some transactions I note this tx_index which is always the same for outputs, and different for each input of one tx. It is clear that this references the utx.
But where does this tx_index come from I wonder? Is it inside the blockchain or is it some specific indexing sitting in their index database?

10  Bitcoin / Development & Technical Discussion / maximum amount of bitcoin that theoretically could be transferred on: April 29, 2016, 11:40:31 PM

In a tx output you specify how many satoshis you assign to it. This is a 8 byte value so the maximum amount of satoshis you could transfer theoretically would be 2^8*8 = 1.84e19 = 1.84e11 Bitcoins.
However, this wastes 4 !! digits as in practical terms the maximum amount of bitcoins can never exceed 2.1e7 bitcoins.
So actually it would make more sense if one satoshi was 1e-12 bitcoins instead of only 1e-8.

What do you think about it?

11  Bitcoin / Development & Technical Discussion / How are referenced output scriptPubKey found in a very large blockchain on: April 29, 2016, 09:45:29 PM
Hi all

Imagine you made a tx that moves bitcoins that had been lying a very long time on the same address (let's say 10 years).
So in this tx, you have to reference this old transaction, which is done by declaring the hash of that tx (you can read that on the bitcoin wiki, topic: transaction).
To validate whether you have the right to claim those funds, the validating node has to retrieve the scriptPubKey of the referenced tx.
But how is this done? I wonder.
In 10 years the blockchain will have grown by over 1000GB (2MB Blocks assumed). So how does the validating node search for the referenced tx? Does it simply go backwards, searches every block? But how long would that take with 1000GB?

12  Bitcoin / Development & Technical Discussion / is it possible to send zero bitcoins on: March 27, 2016, 09:51:21 PM
Is it possible to make a bitcoin transaction where you would transmit exactly zero bitcoins from one address to another. Fee would be paid however. Are such transaction rejected by the protocol or the miners?

13  Bitcoin / Development & Technical Discussion / How export my private key from bitcoin-qt client on: March 07, 2014, 07:57:00 AM
I want to transfer my bitcoins from my local bitcoin-qt wallet to my wallet. Since I have slow internet connection I dont want to download the blockchain but as long as I don't do that bitcoin-qt prevents me from spending my coins. So my idea is to sweep my balance into the account. However, in order to do that, I have to know my private keys of my bitcoin-qt wallet in text format. The wallet.dat file is binary. So how do I export my private keys to text?
I already tried the dumpprivkey command, but it says "privat key for address <> is not known".

thx for help
14  Bitcoin / Development & Technical Discussion / Unable to sweep my paper wallet into my wallet on: February 12, 2014, 10:17:51 PM
I am not able to sweep my paper wallet 163NMjvM6VFoLBpTmTRsrLPseyAFHt49p4 into my wallet due to unconfirmed transactions. Those transaction were made to me from an already known blockchain spammer (discussed in this forum). Since those transaction will probably never confirm, how can I retrieve (sweep) my paper wallet?
Please help me out, I am not too experienced with Bitcoin.

15  Bitcoin / Development & Technical Discussion / Strange transaction to my address on: February 12, 2014, 02:20:26 PM
My key is 163NMjvM6VFoLBpTmTRsrLPseyAFHt49p4. I have two strange transactions of one Satoshi to this address which does not originate from myself or someone I know of. Now I am not able to sweep my funds to my Wallet since those transaction are not yet confirmed, yet they are already two days old.

Can someone please hint me what might be going on and what to do?

Thanks, sincerely
16  Bitcoin / Development & Technical Discussion / same public key on: June 29, 2013, 08:11:06 PM
I have a stupid question.
How is it prevented that there are accidentally two identical bitcoin addresses in the system? Of course the probability is small but if it happened it would be disastrous, wouldn't it?
17  Economy / Economics / Reuters article reveals how sick the system has become on: May 30, 2013, 07:51:33 PM
I really had to laugh as I read this article in Yahoo finance (Reuters).
Quote: "Stocks bounced back on Thursday from declines in the prior session as weaker-than-expected economic data kept afloat the belief stimulus measures by central banks will likely continue."

This article actually says that central banks have sickened our financial system so much that stocks will rise as economic data gets bad while stocks will fall as economy gets better.
I guess the system will totally collapse within the next 2 years. Any bets are welcome.

18  Bitcoin / Mining / what is behind the increase in Mining power on: May 16, 2013, 08:32:13 PM
In the last two month mining power has trippled.
Where is this power coming from? I can only think of ASIC's. But I thought they are not available yet, referring to the BFL issue.
Or is BFL mining for themselves until difficulty is so high that it is hardly profitable anymore and then they will eventually ship their ASIC's to "normal" customers?

19  Other / Beginners & Help / How to spend coins from a secure wallet on: May 08, 2013, 08:12:21 AM
Hi guys

Referring to post i have a question.

May someone please help me out on how to retrieve the money of a secure wallet.
So aiwk171 says in order the get the money back you should start the Live distro, install the bitcoin client and replace the wallet.dat file, then you are ready to spend your coins. But do I not have to download the full blockchain first each time I wanna spend my bitcoins this way.? This is a bit cumbersome, is there another way, that doesnt require to download the whole blockchain each time.
20  Other / Beginners & Help / Where r my coins? on: May 06, 2013, 09:39:21 PM
Hello guys

Where the heck r my coins? Ok here is what I've done.

I have tried to make a secure wallet. So I booted my Laptop with a Unix Live distro. Then I installed the bitoin-ct client. I generated approximately 100 public keys and exported them in a csv file. I encrypted the wallet and then sent me the two files (.csv, .dat) to my own email address. I rebooted my computer and went for the Windows 7 OS. There I opened my existing wallet and made some tiny transfers (10mBTC each) on some of my formerly generated public keys which I looked up in the .csv file. On blockexplorer I assured  myself the transactions succeeded. They are (025d8482512d94a80d259becc3f7d3c4de4a673e311e61dc28aebf8dfd662946, 9be0efb94e27bd6ccad39dcc203a8917672db2422580385da2f5a320af0b5d23, 69b2d07ebba6927e58b99d28381024ef641c6e42ca6422e76a6853b870affae2).
Ok, so I wanted to verify the money has arrived on my new bitcoin wallet, so I simply closed the client, replaced the existing wallet.dat by the new encrypted one which I have sent me by mail and reopened the client and TADADADA... My coins are not there:)

Can anyone please tell what's going on.

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