Bitcoin Forum
October 20, 2018, 04:25:55 PM *
News: Make sure you are not using versions of Bitcoin Core other than 0.17.0 [Torrent], 0.16.3, 0.15.2, or 0.14.3. More info.
 
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181  Other / Meta / Re: Latest drivel on bitcoin.com about bitcointalk.org on: September 21, 2018, 07:44:47 AM
But they are welcome to the banned plagiarists, account farms, bots, shit-posters and other rule breakers.

I doubt they're interested with that forum since i don't see any signature space (or similar) below user's post. Or maybe they will since many of them say this forum is censored and centralized Huh

Maybe i should ask their admin too add signature space and allowing signature/bounty campaign since it could help user's financial condition.
182  Alternate cryptocurrencies / Altcoin Discussion / Re: clone a coin on: September 21, 2018, 07:25:50 AM
Some coins source code (including bitcoin) have it's own script for unit testing which means you need to install library/IDE required to work with the source code.

But, maybe you (and myself) should familiarize ourselves with (automated) Unit Testing first.
183  Other / Meta / Re: [TOP-200] Members who support newbies - Thanks! on: September 21, 2018, 06:51:54 AM
My username on the list? That's unexpected Shocked. But i give merit solely based on post's quality/usefulness (and recent post history for low-ranked member).

Good work though, since we could find merit abuser easier while knowing generous member.

Edit : looks like OP just fix the list and my username isn't there anymore.
184  Bitcoin / Development & Technical Discussion / Re: Lightning Network Discussion Thread on: September 21, 2018, 06:41:40 AM
Is Bitcoin Cash also developing a layer-2, off-chain solution that would "sit" on top of the base layer? I believe that would make a stronger debate for the development of the Lightning Network. It is something that the big blockers might not admit.

https://twitter.com/jihanwu/status/1041691310367760384?s=21

Quote
BCH will continue its roadmap to build electronical cash on base protocol and encouraging permissionless innovation in layer-2. I see lots of buidlers are working so hard! Fake Satoshi can never stop us.

What would be the point of bigger blocks?


I'd bet they would make their own 2nd-layer which might be clone of LN/Raiden Network and forcing 0-fee on it's protocol, then claim they have better on-chain and off-chain scaling.

But i wouldn't listen to people with lots of controversial. I wonder what's opinion of actual BCH developer/contributor.
185  Bitcoin / Alternative clients / Re: Ledger Nano S safe? on: September 21, 2018, 03:07:40 AM
I think they would have to bruteforce your PIN..

AFAIK Ledger Nano S do factory reset (remove private key & seed as well) after 3 invalid PIN attempt.

Can you bypass the user interface by connecting/mounting the disk (somehow) then have access to the file system and private keys stored there?

Check https://bitcoin.stackexchange.com/questions/73708/how-are-ledger-nano-s-private-keys-protected or https://www.ledger.fr/2015/03/27/how-to-protect-hardware-wallets-against-tampering/

TLDR : the storage chip actually have it's basic OS where you only can get signed transaction of the stored private key and you must know the password/PIN.

CMIIW
186  Other / Meta / Re: Captcha without javascript on: September 21, 2018, 02:55:33 AM
That depends on how the admin/owner of the site configure their Security preferences. By v2 default setting, user must enable JavaScript in order to interact with ReCAPTCHA
But since this forum use CloudlFlare, i doubt it's possible unless Cloudllare allow it's client to configure that preferences.

References : https://developers.google.com/recaptcha/docs/faq#does-recaptcha-support-users-that-dont-have-javascript-enabled (assuming the FAQ is up-to-date)
187  Other / Meta / Re: LoyceV's deMerit source application on: September 20, 2018, 05:43:35 PM
I get your idea, but this could be abused easily/misused in many ways. Increasing merit requirement for some ranks, limiting signature features for few ranks and permanent ban for obvious merit abuse are far better and should be easier to be implemented.
Report button on merit page and hidden list of trusted member (which only can be seen by moderator/admin when see reports) should be better.
188  Bitcoin / Bitcoin Discussion / Re: CryptoCreates an environment where violence or surpression is supported on: September 20, 2018, 05:21:22 PM
Even if without cryptocurrency, criminal still able to use fiat either by money laundering or using paper money where government also have little to no control over it.
Besides, most cryptocurrency is only pseudonymous and criminal wouldn't use it since that would make cashing out/sell process far more difficult.

Either way, cryptocurrency is just like another things/tool that can be used by good and bad actors.
189  Economy / Services / Re: [OPEN] 🔥IOU Signature Campaign | Member - Hero | 0.0007 BTC /Post 🔥 on: September 20, 2018, 02:53:34 PM
Hi guys, unfortunately, the devs have decided to end this campaign and move it into a token based campaign. Apologies if anyone didn't get paid for the 4-6 hour period.

That's unexpected, even though technically they still run the campaign. I'd like to switch to BQT signature campaign as well.
190  Bitcoin / Development & Technical Discussion / Re: Looking for an analyzer tool for blockchain on: September 20, 2018, 01:16:11 PM
There are some free or/and open-source blockchain analyzer tool/software, but AFAIK most of them don't have complex feature/analysis. Search blockchain analyzer tool -news on Google should give what you need.
https://github.com/citp/BlockSci looks like is the most popular open-source block analyzer

Don't bother reinvent the wheel unless you're not satisfied with/can't find analysis method you want
191  Bitcoin / Development & Technical Discussion / Re: bitcoin core client blocked on my network on: September 20, 2018, 11:42:29 AM
There are few options including :
1. Change bitcoin default open port. Your ISP might block default Bitcoin Core port, whether it's intentional or not[a]
2. Make sure your Bitcoin Core comes from legitimate source
3. Check if your PC's firewall block connection made by Bitcoin Core or any software outside it's whitelist

But using VPN (or other forms of secure connection) is more convenient and could protect your privacy/anonymity.

a. https://www.ccn.com/isps-intentionally-blocking-bitcoin/
192  Bitcoin / Development & Technical Discussion / Re: When Schnorr will be added? on: September 20, 2018, 04:18:08 AM
AFAIK Schnorr don't use similar method for backward compability.
Schnorr will be added via a new segwit version number. It will not require a transaction format change, there just be a witness version 1 in addition to the current witness version 0.


Just to confirm, does that mean we'll see address starting with bc1p (according to BIP page[1]) ?

1. https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki#bech32

Those were arguments that the anti-SegWit people used, but they're not true:
 - SegWit's security doesn't depend on miners, but rather on the economy. (Otherwise the UASF attempt wouldn't have made any sense...)

Looks like i misunderstood, however what if all miners use non-SegWit nodes, others use SegWit nodes and there's transaction from/to Bech32 address? AFAIK this will make such transaction never confirmed/included by miners.

- The signature is not removed. Between SegWit nodes, every transaction must be accompanied by its signatures or it's invalid.

True, but what i meant is the signature is stripped/removed when SegWit nodes communicate with non-SegWit nodes.
193  Alternate cryptocurrencies / Altcoin Discussion / Re: Transfer Wallets - Desktop to External Drive on: September 20, 2018, 02:38:32 AM
When backup your wallet, all you need to backup are :
1. Mnemonic seed. You don't need to remember the password, but anyone can steal your coins if they find out your seed.
2. Wallet files. You need to remember the password if you set the files with password.

Backup wallet application and it's blockchain database (if it's wallet/client with full-nodes functionality) isn't required, but would save your time from re-downloading the application or/and blockchain database.
Also, there's no "login" when you use wallet, except you use centralized wallet/exchange.
194  Bitcoin / Development & Technical Discussion / Re: When Schnorr will be added? on: September 20, 2018, 02:29:06 AM


It's far simpler than SegWit, there's even less reason for controversy around it, and it won't be done using the BIP9 process which caused SegWit's unnecessary delays. I could see the Schnorr softfork completing next year.

So in order to add schnorr signatures, we will not go through another dramafest of mining wars fighting each other with hashrate signaling different things?

If I remember correctly satoshi used in the past softforks that didn't need mining signaling (basically a UASF? but there wasn't a name for it back then). Im not sure why segwit took that route. Was it simply to allow miners to have their say with their hashrate or was it because of technical reasons that needed it to be implemented that way?

That's because SegWit developer use "anyone-can-spend" and remove signature part of transaction as method for backward compability where it can be used to steal Bitcoin if majority nodes/miners don't support/use client that support SegWit.
And this is one of the argument used by opposition used to stall/disrupt consensus years ago.

AFAIK Schnorr don't use similar method for backward compability.
195  Bitcoin / Development & Technical Discussion / Re: When Schnorr will be added? on: September 20, 2018, 02:20:11 AM
Aside from what other members already mentioned, there are few planned implementation (the idea either from user/developer) on :
1. Multi-signature address (this is obvious application/implementation)
2. Lightning Network, since 2-of-2 multisigature transaction is used when open and close channel
3. CoinJoin (along with various improvement/tweak such as SharedCoins, CoinShuffle, Stonewall and ZeroLink), since AFAIK it could break linking/analysis

And as theymos said, there's no actual BIP for Schnorr since i couldn't find any at https://github.com/bitcoin/bips

What DooMAD said, Schnorr is at least as big of a change as SegWit, and we all know how easy and smooth of an upgrade that was...

I disagree since those who would make ruckus already have their own cryptocurrency and few of them have their own fight consensus. Besides, unlike SegWit, almost no one know about Schnorr Signature/Signature Aggression expect those who interested with Bitcoin's technology.
196  Other / Meta / Re: Do we need a place (page in this forum) to buy merits in bitcoin forum? on: September 19, 2018, 03:43:41 PM
I strongly agree if the price of each merit is 0.01BTC/higher and the Bitcoin will be used to reward/donate Bitcoin developer/contributor who actually bring tons of contribution.

or just spend it for Lamborghini for each moderator Tongue
197  Other / Meta / Re: Hate against bounty hunters!!! on: September 19, 2018, 01:59:56 PM
1. What do you like about it and why are you here?

- Development & Technical Discussion
- A place to learn and earn Bitcoin

2. Should bounties be attached to this website? Why or why not?

If website meant this forum, then no because it's Bitcoin forum.

3. What else can we do against shitposting and spamming (or do we need to do anything at all?).

Higher merit requirement to rank up or limiting signature for Jr. Member. But disabling signature is fastest way.

4. What do you think about the decision of the administrator?

Good, but IMO he's too kind.
198  Other / Meta / Re: Should we look through the post history before awarding merit to newbies? on: September 19, 2018, 10:11:25 AM
Yes, since based on my experience on another section, some newbies who make good posts usually plagiarize from another post/external website.

But if Jr. Member have higher minimum merit (between 3-5) or signature for newbie can't be filled with url/website, that would save people's time.
199  Bitcoin / Bitcoin Discussion / Re: Bitcoin Core 0.16.3 Released on: September 19, 2018, 04:31:00 AM
As usual, thank your for the hard work Smiley

Can anyone explain in an Eli5 exactly what this means?
If a node running Bitcoin Core from versions 0.14.0 to 0.16.2, receives a block that contains a transaction that has a duplicate input, that node will crash.

If the node is crashed, then is it possible that the blockchain/chainstate corrupted? If so, would be suck for those who use older version and use HDD if someone decide to use the exploit.

Also, i wonder if this exploit could be used to make all nodes offline (which make other attack scenario possible) ?
200  Bitcoin / Development & Technical Discussion / Re: Are Blocks in blockchain are indexed ? on: September 19, 2018, 04:15:34 AM
There's no way any developer would think scan entire database just to get a data.


Then, by comparing the speed between (ex. not indexed Window Explorer) and Bitcoin's Blockchain, this question pops in to your mind?

I am a Performance DBA, I know even if the table size in a couple of GB and you have to do Full table scan to fetch the data ,required data cannot be fetched within the seconds . (Debarring parallel query operations).

Sometimes telling obvious things is safer/better choice Roll Eyes

you can read more in details on bitcoin wiki Bitcoin Core 0.11 (ch 2): Data Storage

That link perfectly satisfy my query.


Thanks  to you all. Slightly off topic question, I already gone through all the chapters of "Mastering Bitcoin" book and I do not remember if I have read anything about it.  Did I missed in reading or there are some other source/book from which I should start.

This should be obvious, but the link is outdated and UTXO database/chainstate and LevelDB used by Bitcoin Core has been changed few times.
AFAIK 0.15.1 change chainstate format and there are multiple levelDB optimization.

"Mastering Bitcoin" mostly discuss about things necessary in Bitcoin protocol and database isn't part of it (except block header/TX format) since each client have different way to store/index blockchain/UTXO. A bit off-topic, you might find source/book you want in list that i mentioned in past

Since you have intermediate blockchain knowledge, surely these lists shouldn't too difficult for you :
https://github.com/decrypto-org/blockchain-papers
https://github.com/coderplex/awesome-blockchain

You also could check these cryptocurrency specific lists, but might be difficult for you (and me) :
https://github.com/igorbarinov/awesome-bitcoin
https://github.com/Scanate/EthList
https://github.com/jashmenn/bitcoin-reading-list

The lists i mentioned aren't courses, but i'm sure you would get more knowledge/info with shorter time.
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