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5521  Bitcoin / Bitcoin Technical Support / Re: [TIP] Downloading Wallet needs faster than 54Mbps, or has problems. on: September 22, 2016, 06:02:53 PM
Please, stop. Stop posting when you don't know what you are talking about. Stop posting information as a fact; 99% of the time it isn't a fact but rather just what you think is happening.

All downloads Work well, the problem with Bitcoin is that when downloads from 0, must process and index at same time, if latency is too much will loose sync.
Because my fiber optic modem goes faster than Wi-Fi 54Mbps, there is a bottleneck that causes problems.

All other downloads, download first, install later when download is finish.
Not installing and downloading at same time.
Installing what? There is nothing being installed. This is how a lot of software works when data is being persisted, it will create files on the fly and write to them. Nothing is being installed here.

That's why .dat file size was reduced from 2GB to 130.000KB in Newer Bitcoin versions.
What does that have to do with anything? Bitcoin Core isn't downloading files from other clients. It is downloading raw data and writing that raw data to the disk.

When installing from the HDD/SSD, the timers are in sync,
When installing from the Web, timers are Async, any jitter, latency, will cause problems. "If you are far from nodes."

If CPU & HDD wait too much for information, the OS will detect that as a FAiL.
Also called High iowait.
http://unix.stackexchange.com/questions/11304/high-iowait-while-the-wmb-s-is-low

Downloading first and installing later, will require 2x the size 200GB today, using the HDD/SSD as a buffer of the Bitcoin network, not forcing HDD install like -reindex
What are you talking about? What does that have to do with anything with downloading blocks from other nodes?
5522  Other / Meta / Re: Account 'MatTheCat' compromised, suspended? on: September 22, 2016, 01:49:11 PM
It is hard to say whether he has been hacked. However, we can ask the admins to check the IPs and see if they are different.

IIRC, IP evidence isn't offered by administrators since it's unreliable (with all the services offered for VPNs). Has the policy changed?
The admins have offered IP evidence in the form of "yes the IPs are the same" or "no they are different". They don't actually give the IPs. Also, a lot of VPN and Tor IPs are known so they can say whether the IP is likely to be hidden or not.
5523  Bitcoin / Bitcoin Technical Support / Re: another question with bitcoin core on: September 22, 2016, 01:47:37 PM


thanks , very patient

and if I want to explore the blockchain ,

must I read and write new codes on the source code?

any good solutions
You do not have to modify Bitcoin Core. You can use Bitcoin Core to give you information about transactions as they arrive and then you store that yourself in another database. There are some open source block explorers available that work with Bitcoin Core. Off the top of my head, you can look up Insight and Bitcoin Abe. Just google around for it.
5524  Bitcoin / Bitcoin Technical Support / Re: another question with bitcoin core on: September 22, 2016, 01:28:47 PM
Is this your address? Is the address in your wallet?

If it is not, then that command will not work. Bitcoin Core does not track all addresses, the overhead is too much and that is not what Bitcoin Core is meant to do.

oh ,get it , it is not my address

but I imported it to my Bitcoin Core , when I imported it, I choosed no rescan first time
Without rescanning it won't know about any transactions related to that address. You will have to rescan in order to get any information about it.

and now reimport  with default(rescan)
--img snip--
it is very slow,
Yes, that is because it must go through the entire blockchain and scan every single transaction to see which transactions create outputs to the address and spend from those outputs, if any.

my further question is , why the blockchain.info has faster way to get the trans of a special address?

it shouldn't be that he has good server ,at same time he has lots users , while I am only user of my computer
Because blockchain.info is not just relying on a bitcoind. Rather they have at least one set up as a node, but they also have other software and an external database. This allows them to receive the transactions and write them to their large external database so that they can retrieve the information quickly. Bitcoind is not designed to do that because it is completely unnecessary. It is not supposed as a block explorer.
5525  Bitcoin / Bitcoin Technical Support / Re: another question with bitcoin core on: September 22, 2016, 12:46:33 PM
Is this your address? Is the address in your wallet?

If it is not, then that command will not work. Bitcoin Core does not track all addresses, the overhead is too much and that is not what Bitcoin Core is meant to do.
5526  Other / Meta / Re: Account 'MatTheCat' compromised, suspended? on: September 22, 2016, 12:43:22 PM
From the seclog:
Quote
September 20, 2016, 09:32:56 AM - MatTheCat - password changed

It is hard to say whether he has been hacked. However, we can ask the admins to check the IPs and see if they are different.


If he wants his account back, he will have to sign a message with the following addresses:
Quote
1NixsfeHKoj76fB6xMwa19tfcnEsGTxsGz
17irB8xLxhVRerCoUyypnmpoak3QBpVp2z
12JKDhDJfux3VjpRbDYQj81JAZNEyn2nfq

5527  Bitcoin / Bitcoin Discussion / Re: Bitcoin Core version 0.13.0 Released on: September 22, 2016, 12:18:42 PM
Can someone please tell me which version of OpenSSL BTC use for client communication?
OpenSSL isn't used for client communication. At this point it is only used for the PRNG and maybe something else. It is mostly being phased out.

Bitcoin Core uses 1.0.1k
5528  Other / Beginners & Help / Re: Pool on: September 22, 2016, 12:06:12 AM
but how i will find the right nonce if im looking for my low diff block?
Any block that is valid for the normal diff will be valid for the low diff. Because the hashes are random, someone will eventually hit a valid block.
5529  Other / Beginners & Help / Re: Verifying Bitcoin Core on: September 21, 2016, 10:06:39 PM
i have a question, do I need to download the entire blockchain file in order to receive my btc into my bitcoin core wallet?
You can receive regardless of your sync state. However, if you want to be able to see and spend the Bitcoin, you will need to be synced. You can enable pruning so that the blockchain doesn't take up as much space.
5530  Alternate cryptocurrencies / Altcoin Discussion / Re: "segmentation fault" on: September 21, 2016, 09:42:17 PM
How much RAM do you have? I think you may just be running out of memory.
36gb...
I've wiped all processes, just to run a single daemon, and this continues to come up just about every coin i manage to compile.
Run just bitcoind. Post the full debug.log from it.

Are you sure that your dependencies are the correct versions?

What OS?
5531  Alternate cryptocurrencies / Altcoin Discussion / Re: "segmentation fault" on: September 21, 2016, 09:37:41 PM
How much RAM do you have? I think you may just be running out of memory.
5532  Economy / Scam Accusations / Re: Hero Member "MatTheCat" Scammer and He changed his password to say it's hacked on: September 21, 2016, 09:34:44 PM
Someone is claiming that he owns the account MatTheCat and that it was hacked: https://bitcointalk.org/index.php?topic=1623701.0 That account is also currently banned.
5533  Other / Meta / Re: Account 'MatTheCat' compromised, suspended? on: September 21, 2016, 09:32:06 PM
You are currently banned. There is an open scam accusation against you: https://bitcointalk.org/index.php?topic=1622279.0

Edit: Did you try resetting your password using the security question? (If you didn't DON't TRY IT).
5534  Bitcoin / Development & Technical Discussion / Re: Mining At Bitcoin Limit on: September 21, 2016, 06:36:46 PM
Bitcoin limit? You mean when all Bitcoin's have been mined? In that case, miners will be making money off of transaction fees. The transaction fees of all transactions in a block goes to the miner.
5535  Bitcoin / Bitcoin Technical Support / Re: [Bounty] 0.2 BTC - bitaddress.org Temp / Cache Files on: September 21, 2016, 06:09:46 PM
You can look closely at history, but another thing that can work is to start going to the same site you used a private key by typing the address one letter at a time.  
What the hell is that supposed to do? The data is not cached, we have already established that. Furthermore, you can't generate a private key from the address. That is not how bitaddress.org works either.

This is also unlikely, but you will see the URL's that you visited and you may see the private key as a string passed to the URL.
No. The private key is never passed to any server. It is all handled client side in javascript. If it were passed to the server through something like the URL, the site would no longer be used, people would tell everyone to avoid that site due to the lack of security.

Do us all a favor and not post when you don't know what you are talking about.
5536  Other / Meta / Re: Posts vs Activity on: September 21, 2016, 05:36:29 PM
Read the FAQ:  https://bitcointalk.org/index.php?topic=703657.0#post_faq. The answer is in there.
5537  Bitcoin / Electrum / Re: How can electrum seed be secure on: September 21, 2016, 01:45:42 PM
Just tried Electrum and i can only make english so where are the others
It depends on your computer's language. Default is english, if your computer's language is chinese, japanese, portuguese and spanish, then it will be in one of those languages.

Also, read my edited post for the math.
5538  Bitcoin / Electrum / Re: How can electrum seed be secure on: September 21, 2016, 01:28:44 PM

But in electrum there are 2048 words that are public so we can consider that each word is 1 alphabet letter so brute forcing a 12 character password from 2048 pool doesn't seem that hard to do?
And after the seed is used is it possible to force it to use user generated password for make any transaction or after someone gets seed they have full access
You didn't read the post, did you? The search space is massive, in fact much more so than a 12 character password. Read the post and look at the math.

Electrum's mnemonic is similar to BIP39 but not the same. AFAIK, Electrum actually uses 13 words. That means that there are 11,150,372,599,265,311,570,767,859,136,324,180,752,990,208 possible combinations. Furthermore, there are 5 languages, so if you don't know the language, there are 55,751,862,996,326,557,853,839,295,681,620,903,764,951,040 possible combinations. Because the seed is random, there is no pattern, so the only way to get the seed is through brute force. Even if you were able to guess 50 Million seeds per second, it would still take 1.3274253094363466155676022781338310420226438095238095... × 10^31 years to go through the search space.
5539  Bitcoin / Electrum / Re: How can electrum seed be secure on: September 21, 2016, 01:15:20 PM
See https://bitcointalk.org/index.php?topic=1606740.msg16154287#msg16154287
5540  Bitcoin / Bitcoin Technical Support / Re: Bitcoin-qt always reindexes blocks on startup on: September 21, 2016, 04:56:31 AM
Interesting. Find the bitcoin.conf file if it exists. It should be in ~/.bitcoin if you didn't change the defaults. Make sure that there isn't something like
Code:
reindex=1
in there.
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