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21  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][CLAM] CLAMs, Proof-Of-Chain, Proof-Of-Working-Stake, a.k.a. "Clamcoin" on: July 19, 2017, 06:52:24 PM
Is it too late to claim som CLAMcoins ? I had BTC in the specific snapshot.

Not too late.

I actually just turned up an old BTC wallet yesterday.  I dug them on just-dice.com.  But you can also just import your old btc addresses into the clam wallet.  Cheers!
22  Economy / Service Announcements / Re: ✰ [ANN] BITMIXER.IO ✰ High Volume Bitcoin Mixer ✰ on: July 19, 2017, 05:55:02 AM
Having never used their service, are you telling me that they require a username stored on their platform? If that's the case, this entity is looking more and more like a front organization each passing day. Put another way, if Bitmixer isn't a CIA et al. operation, then they prove how inept they are, for there's no way in hell a 3-LA should've missed the boat by not setting up a like venture for the purpose of gleaning whatever the fuck it is they glean.

@CIA: I don't really live a van with four flat tires on the banks of the Colorado River. I live in Josh Zerlan's basement. Come and get me.  Grin Grin Grin

Lol.

Well they say they send you a PGP signed message so I suppose they have to send it somewhere.  Maybe that's a "username".  For the record, I've never used the service either.  Not saying I wouldn't use it.  Maybe I would.
23  Bitcoin / Press / Re: [2017-07-17] Overstock Chairman: It’s ‘Crazy’ More Retailers Don’t Accept Bitcoi on: July 19, 2017, 05:14:45 AM
[There are currently only three retailers in the world’s top 500 that accept Bitcoin as a form of payment, with Overstock.com being one of them. This figure is actually down from 2016 when the number sat at five.

Does anyone know who the other two are?
24  Economy / Service Announcements / Re: ✰ [ANN] BITMIXER.IO ✰ High Volume Bitcoin Mixer ✰ on: July 18, 2017, 10:23:12 PM
See the paradox? It's impossible for them to do my Day 3 transaction if my Day 1 transaction was purged from their platform as promised but fully capable of performing such due to some b-code. Ergo, if there's no record of the first transaction, then it's highly probable that one could obtain coins that they didn't want to be attached to. It can't be 100% possible to have it both ways.

I do see the paradox, yes.  I'd love to hear their answer.  I have the intuition that hashes could form the basis of a system which partially answers the question, but I don't have it all worked out.

Day 1: Bruno sends me coins from address 1, I hash "Bruno@mail.com" and "address1" (separately) and concatenate them to get the "bitmixer code"
Day 2: ...
Day 3: Bruno sends me coins from address 1.  I need to make sure I don't send him any coins that came from previous addresses from Bruno.  I hash "Bruno@mail.com" and get the first half of a "bitmixer code".  I choose an address to send him coins from by excluding any candidates which exist in my DB of bitmixer codes where the first half of the code is hash(Bruno@mail.com).

I agree that it seems that they have to be storing something, in my sloppily constructed example a list of bitmixer codes which are a hash of a username and an address.  I suppose that as long as they don't store the actual username they can claim they don't have a record.  Anyway, I hope they answer your question which was very well put.
25  Economy / Service Announcements / Re: ✰ [ANN] BITMIXER.IO ✰ High Volume Bitcoin Mixer ✰ on: July 18, 2017, 07:30:37 PM
Clearly, my Bitmixer code remains on file attached to bitcoin wallet addresses I've previously used, else there would be a strong possibility of me receiving some of the coins back that I may not want attached to me, but that would be an impossibility given that ALL order data is purged from your system within 24 hours, as stated above, resulting in the 3-LAs et al. finding nothing.

I don't know if this is how they do this, but if the "bitmixer code" is a hash of an address, because hashes are one-way, that should be able to provide the basis for a system where they're not storing your old "from" addresses, but can check when you ask in the future that they aren't re-using anything.
26  Economy / Service Discussion / Re: Overview of Bitcointalk Signature-Ad Campaigns [Last update: 10-Jul-2017] on: July 18, 2017, 07:13:50 PM
We have just added the AICoin Signature Campaign that pays in AICoin.
https://bitcointalk.org/index.php?topic=2027305.new#new

Thank you.
Marcie

Does this thread list campaigns that pay in altcoin?  I thought it was bitcoin only to be in the table of the OP.
27  Bitcoin / Bitcoin Technical Support / Re: bulding on debian on: July 18, 2017, 06:01:58 PM
Sorry for the necro, but this topic still isn't resolved for me.  debian Strech is now 'stable', and I've of course done git pull several times since january.

FWIW, this issue is restricted to building bitcoin with QT5.  I haven't tried it with QT4.  If I do --no-gui in configure, I can build headless bitcoin just fine.  I was hoping to get to the bottom of this, however.

Code:
/usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0: undefined reference to `xcb_send_request_with_fds'
collect2: error: ld returned 1 exit status
Makefile:3628: recipe for target 'qt/bitcoin-qt' failed
make[2]: *** [qt/bitcoin-qt] Error 1

My libxcb-dri3 is updated to latest in Stretch

Code:
$ sudo apt-get install libxcb-dri3-dev
Reading package lists... Done
Building dependency tree      
Reading state information... Done
libxcb-dri3-dev is already the newest version (1.12-1).

Sometime Debian isn't the fastest at upgrading software.  Is 1.12-1 a late enough version of libxcb-dri3?  Is this a red herring?  When I run "strings" on that so file, I see xcb_send_request_with_fds:

Code:
$ strings /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0 | grep send
xcb_send_request
xcb_send_request_with_fds

So why is ld having a problem here?  I'm a little lost.



EDIT:

I just removed the qt5 packages and rebuilt with qt4 and no issues.  This is definitely not critical, but for my education I'd love to find out more about what's going on here.
28  Bitcoin / Bitcoin Technical Support / Re: trying to connect this node on: July 18, 2017, 04:36:10 PM
Are there any services akin to canyouseeme.org which can check a .onion address?
29  Bitcoin / Bitcoin Technical Support / Re: Sending Using Outdated Bitcoin Core Instructions? on: July 18, 2017, 04:32:38 PM
Am I wrong that all OP needs to do is

0) start the old bitcoind

1) listreceivedbyaddress

2) for each address:

dumpprivkey $address

3) shutdown old bitcoind

---

use pywallet or whatever he wants to create raw transactions sending the bitcoins to some new wallet of their choosing.  Those raw transactions can be pasted into one of the web-services which posts raw transactions for you.  Or, alternatively, OP could import those privkeys into some lightweight client that doesn't download the whole blockchain.

What did I miss?

I don't think Windows has anything to do with it.
30  Bitcoin / Development & Technical Discussion / Re: Why are sidechains impossible on: July 18, 2017, 04:12:12 PM
But is there a post arguing they are?

But if they are possible (because they exist) and there is a post arguing they're not possible, then aren't you ready to accept that the argumentation in that post is flawed?
31  Bitcoin / Development & Technical Discussion / Re: Are we already on the fork? on: July 18, 2017, 04:10:33 PM
Exactly this!
Not strange. A lot of people have got the same message lately. Don't stress that much!

Achow101, can this be the exchange and not the wallet?

OP didn't really say where they saw the warning.  It's certainly possible that an exchange is running a node that generates the warning and they're showing it on their webpage or something.  I see the warning in the output of 'getinfo' on bitcoiin-core:

Code:
$ bitcoin-cli getinfo
{
  "version": 149900,
  "protocolversion": 70015,
  "walletversion": 60000,
  ...
  "errors": "Warning: Unknown block versions being mined! It's possible unknown rules are in effect"
}

Also, this forum's News ticker has a message about this: "News: The warning which may be displayed by Bitcoin Core about unknown versions is related to BIP91, and can be safely ignored."
32  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][CLAM] CLAMs, Proof-Of-Chain, Proof-Of-Working-Stake, a.k.a. "Clamcoin" on: July 17, 2017, 09:23:01 PM
Note: The building of all code takes a lot of time. You can speed up it with using more cores by "make -j4", but it increases CPU temperature a lot. (I forgot to order cooler when I ordered my raspberry so I had to run only on one core to prevent overheating :-D)

If you setup the cross-compile build options in configure (or autogen) then you should be able to cross-compile for an arm9 using a beefier desktop that runs faster and won't overheat.  Raspberri pis are neat little low-power computers which are very useful and fun for many tasks, but I wouldn't set one up as my build rig.
33  Bitcoin / Bitcoin Technical Support / Re: Legitimate crypto company wants to hire me. One red flag re:PGP signatures on: July 17, 2017, 09:18:22 PM
Quote
I don't know how to use windows.  If I understand your question, you want to add an email address to your gpg key?  If that's the case, you're going to use gpg edit-key adduid.  The docs:

https://www.gnupg.org/gph/en/manual/r899.html

I was in a rush to get it up and running and couldn't find a step-by-step guide on how to do it on Linux. I much prefer to use Linux mint.

It turned out it was an easy problem and I was just a newbie. Basically I send to email address Bob@legitimatecompany.com and check off the PGP key for bob@gmail.com. I have no idea why I was making it so complicated!

On that note, does anyone know of a good guide that gives step-by-step instructions for Linux? Trying to figure out what to type in terminal is near impossible for me because I don't know what any of the commands mean.

This web pages give a step by step for adding an email address to a gpg identity:

https://www.katescomment.com/how-to-add-additional-email-addresses-to-your-gpg-identity/

The ssl cert is out of date on that site (as of right now) but the content is still correct.
34  Other / Beginners & Help / Re: Github Crypto sources on: July 14, 2017, 04:43:39 PM
I don't think there's an actual way to know that for sure.  They can tell you that what they're distributing is a build of what's on their github.  You can build what's on their github.  You can download their binaries and then compare them with what you built but the difficulty is that you're unlikely to get a bitwise identical binary since you're probably not building with the same configuration/compiler/etc.  You can do a sort of "external" comparison on what you build and what they distribute by running tests against both.


On second read, you're actually asking if a binary in a repo is the same as a binary on a website: to do that, just download both of them and hash them then compare the hashes:

Code:
$ sha256sum file1.zip | cut -f 1 -d ' ' | diff <(sha256sum file2.zip | cut -f 1 -d ' ') -

The above just uses bash to run sha256sum against "file1.zip" and "file2.zip" and pipes each result to diff.  If they are not different you will see no output and $? will be 0.  If they are different, you'll see the two different hashes printed on the command line.  Note: if the above syntax is confusing or hard to replicate, you could always just compare hashes "by hand".
35  Other / Meta / ignore an entire thread on: July 14, 2017, 04:11:03 PM
Is there a way to ignore an entire thread; to prevent replies to it from showing up in my 'new replies' page?

There are some threads with like over 300 pages (so the option to show all pages doesn't appear) and I posted somewhere back in that thread some years ago and the thread is still continuing to this day and I haven't looked at it for years and now I want to ignore it.  I'd love to be able to do this without trying to find exactly where I posted in order to delete it.  I mean, if a thread has 300+ pages and I have thousands of posts, it's not so easy to find a particular one.

Because I tend to use my "new replies" more than my "watchlist", I would love a way to ignore an entire thread.  Maybe I just have to learn to use my watchlist?

Thanks for any tips.
36  Bitcoin / Bitcoin Technical Support / Re: Urgent help required in configuring bitcoin core in Ubuntu on: July 14, 2017, 01:55:06 PM
It seems like if your existing solution doesn't already provide some functionality to batch your transactions, then yes you're going to have to write some code to accomplish it.

Write code which does this:

A user wishes to withdrawl n Satoshis from her balance on your site, You make sure her account has enough to cover the withdrawal + some fee.  You put this information into a queue.

Write other code which does this:

Check the queue to see if you've got sufficient withdrawal to process, or that some max time has passed. If yes, create a bitcoin transaction which pays out the proper amounts to all of the addresses in the transaction queue.

What part is unclear?  I don't expect anyone will write this for you, although it's possible that code already exists for this and someone here might be able to point you to it.



In terms of whether your webserver or your bitcoin server does this work, I could see it going either way:  In one scenario your webserver is just storing the queue and then using bitcoinrpc to build and send the batch transaction.  In the other scenario, you have some secure way to communicate with a script on your bitcoin server and the queue is built up on that computer.  You could use crond to run your processing job every hour.
37  Bitcoin / Bitcoin Technical Support / Re: Urgent help required in configuring bitcoin core in Ubuntu on: July 13, 2017, 09:25:54 PM

bitcoin-cli settxfee 300

Is the above command correct?  

In this case will it charge 300 Satoshi per KB? Is it enough if i run that command only once?

Uh, the documentation says that's BTC per KB so I'm thinking that 300BTC is a little bit too high (although I'm certain your transactions will confirm very quickly).

You should take a look at the configuration options for your bitcoin.conf file if you want to use the same configuration everytime bitcoind starts (your host may reboot, etc).  See here:

See here:

https://en.bitcoin.it/wiki/Running_Bitcoin#Bitcoin.conf_Configuration_File

It looks like the configuration file version of this setting is 'paytxfee'.  You may also want to look at maxtxfee and mintxfee.  This is the help for settxfee:

Code:
$ bitcoin-cli help settxfee
settxfee amount

Set the transaction fee per kB. Overwrites the paytxfee parameter.

Arguments:
1. amount         (numeric or string, required) The transaction fee in BTC/kB

Result
true|false        (boolean) Returns true if successful

Examples:
> bitcoin-cli settxfee 0.00001
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "settxfee", "params": [0.00001] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/
38  Bitcoin / Development & Technical Discussion / Re: python-bitcoinlib, creating CBlock with getblocktemplate data on: July 13, 2017, 07:42:31 PM
I don't have experience with this lib.  But I took a look at the documentation you linked to as well as your example code.  I see that you create a list of CTransaction objects and pass that as the last argument to CBlock.  The docs show the last argument as a tuple of vtx. So, here are a couple of ideas.


EDIT: removed wrong ideas after looking a bit deeper.

Can you follow the call stack from that CBlock construction all the way to line 328 in stream_deserialize?  I can't see enough of your code to tell how you got there.

Sorry!
39  Bitcoin / Bitcoin Technical Support / Re: Legitimate crypto company wants to hire me. One red flag re:PGP signatures on: July 13, 2017, 07:11:44 PM
Ok, so anyway this is now a tech question: how do I send someone a PGP signed message on thunderbird with enigmail installed if I have a PGP signed message from a different email address?

I don't know how to use windows.  If I understand your question, you want to add an email address to your gpg key?  If that's the case, you're going to use gpg edit-key adduid.  The docs:

https://www.gnupg.org/gph/en/manual/r899.html
40  Bitcoin / Development & Technical Discussion / Re: Private Key --> ripemd160 hash in perl on: July 13, 2017, 06:55:15 PM
Here you go:

https://metacpan.org/pod/Crypt::RIPEMD160

And you probably want to look here for some discussion (is this you?):

https://stackoverflow.com/questions/16092584/perl-alternative-to-hash-hmacripemd160-data-key-in-php

For sha256 there's a built-in:

http://perldoc.perl.org/Digest/SHA.html

And of course you could (on GNU/Linux) do:

Code:
$hash=`echo -n $seed | sha256sum`;

because as I recall Perl supports the backtick operators and sha256sum is usually built-in on GNU/Linux.



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