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News: ♦♦ New info! Bitcoin Core users absolutely must upgrade to previously-announced 0.16.3 [Torrent]. All Bitcoin users should temporarily trust confirmations slightly less. More info.
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161  Bitcoin / Bitcoin Technical Support / Re: [overview] Recover Bitcoin from any old storage format on: August 26, 2018, 05:05:10 PM
Few recommendation :
1. If user had old wallet/seed format, it's strongly recommended to move the Bitcoin to wallet with newest format.
2. If user decide to move their Bitcoin to different address, it's recommended to use SegWit address.
3. For user with security concern, i recommend to verify installer's signature/checksum
162  Bitcoin / Bitcoin Discussion / Re: Bitcoin Transaction Volume Tops PayPal, Creeps Up on Visa on: August 26, 2018, 04:48:37 PM
Unlike PayPal, people sometimes make transaction to move their bitcoin to another address/wallet for various reason such as consolidating input, move to wallet with different seed after claim forked coins or move to SegWit.
So, this news only valid to hype make bitcoiner happy.

But if some country/government decide to legalize Bitcoin as currency/payment method, actual Bitcoin transaction value will surpass PayPal easily.
163  Economy / Service Discussion / Re: Bitmain now requiring KYC documentation to buy hardware on: August 26, 2018, 08:55:58 AM
It's in your hands to stop it. For instance, people should just stop buying Bitmain miners and make the company suffer a drastic loss in the business due to their new KYC policy. They will change it or will be replaced by another company which doesn't enforce such policies. It's really upto the people to decide how to go about a government tactic. Evey exchange has started to ask for verifications and everybody is doing it you see, the government did their thing but it's only upto the masses to decide if they would abide or boycott it.
Bitmain is probably the most hated entity within this industry, but yet they are still growing and generate more sales than ever before. I don't think any form of boycott will inflict damage on their business.

I think that that people and businesses buying hardware from Bitmain will just cope with the KYC requirements since their potential mining rewards have more priority than their personal information.

Another thing is that verification is a one time event. After their initial verification process they won't be bothered with more verification requests. In other words, people's "sin" will no longer follow them everywhere.

I disagree, if bitcoin or any major cryptocurrency (which use PoW and can be mined with ASIC) community want to change to PoW "resistant" algorithm, that would hurt Bitmain (along with other ASIC manufacture) significantly.
If 51%+ of mining hashrate comes from Bitmain's pool or ASIC, i'm sure there will be boycott attempt.
164  Other / Meta / Re: Bash script to filter new topics created by high rank members only on: August 26, 2018, 06:37:50 AM
I guess "$HOME/log_bitcointalk_high_rank_topics" would be "C:\Users\<username>\log_bitcointalk_high_rank_topics" on Windows but this script is meant to be run on Linux machines (I never used bash on Windows).

Thanks, can't believe i didn't check my own user folder

Filtering self-moderated topics is easy to implement (with grep "This is a self-moderated topic. If you do not want to be moderated by the person who started this topic, create a new topic." in "$TEMP_DIRECTORY/topic${topics_array[$topics_array_entry]}") but can you explain why it would be interesting?

Because in my experience, spammer usually don't post on self-moderator thread, especially if the thread made by reputable member, except self-moderated thread on Marketplace where it's abused by scammer/shady seller
165  Bitcoin / Bitcoin Discussion / Re: ETFs are gone, now it's Bitmain IPO? on: August 25, 2018, 07:56:28 PM
Hours ago, several bitcoin ETFs were officially rejected by SEC. It sounds this FUD doesn't have as much effect as Winklevoss twins' rejection.

Most bitcoin FUD only works once, especially if people realize it doesn't matter too much in long term even if it's true.

IMO, Bitmain's IPO is a test on people's belief in cryptocurrency. If it successes, we might see those green days back. But if it fails, I doubt that we'll see market bleeding badly.  

IMO if Bitmain's IPO success, that would allow Bitmain continue to monopolize mining (both ASIC and pool) and we might continue see red days since they will have 51%+ hashrate on many cryptocurrency on both pool and ASIC.
Frankly, i hope this IPO failed horribly and investor/miner choose another ASIC manufacture to prevent domination/monopoly by single company.

so what we need is for this uncertainty to be lifted and it will be lifted as soon as ETF fate is decided next month and we can get rid of it for now.

Couple of months ago, when there's no ETF the market was doomed as it is now. Are you expecting for ETF's approval or rejection?

Since you mentioned "people's belief in cryptocurrency", then you should start to think that people also believe in technology/decentralization.
166  Other / Meta / Re: Bash script to filter new topics created by high rank members only on: August 25, 2018, 07:39:37 PM
Nice work, now i have reason to regularly visit Altcoin section and basic editing such as remove/add boards ID or choose specific rank is very easy Smiley

I wonder if it's possible to filter/choose thread which is self-moderated. Also, where is "$HOME/log_bitcointalk_high_rank_topics" on windows OS?
167  Bitcoin / Development & Technical Discussion / Re: 10 min (on average) for block time? is it a rule? on: August 25, 2018, 07:01:10 PM
It is the most naive analysis of such a critical subject, ever .

To have a solid understanding of block time issue one should perform a heavier analysis of the network considering  both  the actual propagation delay and its improvement opportunities.

I agree, but not everyone have good technical knowledge.

It is sad. When we read something about how bitcoin is perfect and no further improvements is needed, we blindly accept it without any further research.

That can be said for any cryptocurrency or new technology.

I have read* a comprehensive analysis of this issue 2-3 years ago, when BIP 151 and other network layer enhancements were not around and authors have thoroughly proved that with very minor enhancements (like adding compact block transmission which is already done) we would have  no security issue with reducing block time substantially.

I read the paper a bit and i can't disagree, but there should be up-to-date research about this case since there's few protocol changes/client optimization, especially because people stuck with shorter block time is bad thing.
P.S i might have different opinion after read the paper thoroughly

I strongly believe with even further improvements in bitcoin networking services we can reach to a rough 1 minute block time without any security draw back.

As i mentioned on other thread, that would mess with coin production rate (even though it can be solved easily), timelock script which rely on block height and any 2nd layer which use it.

Besides, that would mean we might need more than 6 confirmation to reach same security with current block time.

At the time of this writing we have less than %0.02 orphan blocks rate (only 11 blocks in last 12 months).

It is TOO low: an orphan block rate up to 1% is still to be considered secure! It proves a point: We are keeping bitcoin Too secure!

It is always true, set block time to 1 hour and you will get better security, but it is not what an engineer or a prominent developer do, you have always to trade-off and check what you are gaining for the utilities you are losing. In the block time case we can improve it right now without any considerable increase in orphan rate.

And the difficult problem is each people have different measure of acceptable orphan rate.
168  Economy / Service Discussion / Re: IF PAYPAL BANNED YOU on: August 25, 2018, 06:26:47 PM
At least they know it's bad move for their business, but it's too late since majority of crypto community already think ebay is anti-crypto and there are better alternative such as LocalBitcoin and DEX (such as Bisq) which have fiat-crypto pairing Roll Eyes

Ebay bought Paypal, so they own them. There is no lesser evil here unless a viable alternative for ebay comes around..
I would be waiting for a decentralized buy/sell portal which can give a heart attack to ebay especially their paypal service. Paypal is too centralized and seems like they are very good at ruining any business whenever they want. Anyone who ever used paypal for their business and when they become big they know what I am talking about. Paypal sucks.

There are few decentralized marketplace such as OpenBazaar and Decentraland Marketplace (which run on ETH), but it's not competitive at all since it's far from user friendly.
169  Bitcoin / Bitcoin Discussion / Re: Fees have been low after Segwit's growing adoption. Thanks Segwit. on: August 24, 2018, 09:44:17 PM
And don't forget to thanks Bitcoin developer/contributor who participate on SegWit development. Additionally technology such as LN and Schnorr Signature also makes transaction fees smaller and transaction size reduced Smiley

technically speaking the fees went down because of 3 main reasons which i will list in order of importance effect:
1. spam attack against bitcoin network stopped for whatever reason: maybe because SegWit was activated finally, maybe because BCash went away, or maybe because Dash and other altcoins that were spamming got dumped hard. but the spam attack stopped.

2. price became more stable, specially in the past 4 months. and without huge rises or huge falls there is always less transactions on the network.

3. with SegWit we got about 20% capacity increase (so far) which helped a lot and also some of the big services started batching their transactions which improved things a lot too.

4. Exchange/services (such as Coinbase) uses batching transaction which reduce tx size

5. SegWit actually use block weight limit which enable higher block size (a bit higher than 2MB actually on most cases)
170  Alternate cryptocurrencies / Altcoin Discussion / Re: EOS on: August 24, 2018, 09:34:50 PM
but i have  general understating of blockchain technology, "general" is a key word

If it's really true and you care about the technology, then you should know that EOS achieve very high TPS by sacrifice decentralization since there are 21 Large Entities where they need high-end computer/server to run their full-nodes.
Besides they have few controversial ideas such as rollback transaction and automatic EOS redistribution if it's not moved within 3 years (CMIIW).

IMO if people actually care about technology/decentralization or find another cryptocurrency with better promise, then EOS price would dropped.
171  Alternate cryptocurrencies / Altcoin Discussion / Re: The US Senate intends to hold a "blockchain energy efficiency" hearing on: August 24, 2018, 09:12:15 PM
It is reported that US legislators will explore how to apply blockchain technology in the energy industry

Not a bad move, even though blockchain is used as buzzword again.

and discuss whether to increase the cryptocurrency mining electricity bill.

That's understandable, but it's ironic since many industry sector have similar problem and that sounds like permission to do mining activity IMO since government might force big farms to join specific pool or put backdoor.
Maybe i imagine too much, but it's possible since now miner need KYC to buy ASIC from Bitmain.

But big farms wouldn't mine on US since there are better country/location which have cheaper electricity or lower temperature which lead to lower maintenance.
172  Bitcoin / Bitcoin Discussion / Re: Books like The Bitcoin Standard on: August 24, 2018, 08:45:54 PM
If you don't mind books with few personal opinion, i would recommend The Internet of Money and The Internet of Money Volume Two by Andreas M. Antonopoulos. Few interesting things that i've found are the basics of Bitcoin, comparing Bitcoin with another technology in early days and the importance/advantage to keep Bitcoin simple (not too much complex feature such as Smart Contract).
173  Economy / Service Discussion / Re: Bitmain now requiring KYC documentation to buy hardware on: August 24, 2018, 02:46:24 AM
Looks like people bad speculation about ASIC (such as might become true if other company also follow forced to use KYC requirement.
I wouldn't surprised if their new ASIC also have backdoor just like Antbleed.

Hopefully other mining manufacture will make ASIC with open-source firmware/OS without KYC requirement or Bitcoin (or any PoW based cryptocurrency which can be mined with ASIC) community will be forced to use ASIC "resistant" PoW algorithm.
174  Other / Ivory Tower / Re: Implanted microchips - boon or bane? on: August 24, 2018, 02:18:28 AM
Well, I would only implant such a device if both the software and the hardware was open source, secure from most cracking/hacking attempts and independently verified as safe by an unbiased third party.

Even if there's microchips that meet your requirement, i doubt it's good enough if you can't verify whether the software/hardware is exactly same with the one that independently verified or still need 3rd party help to implant/insert the microchips inside your body since there's chance they swap it with malicious software/hardware.
175  Bitcoin / Bitcoin Discussion / Re: Questions about Addresses on: August 23, 2018, 05:00:05 PM
1) What might happen on the off chance that one endeavors to send a measure of coins to an IP address that isn't running the program?

2) What might happen on the off chance that one endeavors to send a measure of coins to an invalid Bitcoin Address?

3) What might happen on the off chance that one endeavors to send a measure of coins to a Bitcoin Address that no one claims?

I thank answerers for extending my insight.

1. I don't really understand this question, but you don't need to run program (wallet/nodes in this case) to receive your coins since the transaction is recorded on blockchain and can be accessed by anyone anytime.

2. If you mean by address without right format/standard, it's impossible since it violates the protocol and nodes/miners would reject it. But most bitcoin wallet have address validation (by check total character, few first character, etc.) to prevent that, so you don't need to worry about small typo.

3. The coin would be lost forever assuming the receiving address have valid format.

P.S. if you want to extend your insight, then move this thread to Development & Technical Discussion where you can get better/detailed answer.
176  Bitcoin / Development & Technical Discussion / Re: Loss of bitcoins from h/w wallet - need help understanding on: August 23, 2018, 04:50:47 PM
Since from post history OP never mentioned where his friend bought the Trezor wallet, i would suggest contact Trezor if his friend bought the HW wallet from 3rd party. Ledger CEO mentioned in past that "we can help you file a formal criminal complaint and bring the eBay seller to justice"[1] and AFAIK it's the only way to recover loss stolen Bitcoin.


Another important question to ask would be, where did you buy your Trezor? I hope it wasn't from Ebay, or some online store, or from a "friend". Your Trezor should come from Trezor themselves, straight from where it is made in the Czech Republic, and arriving in your doorstep without the package tampered.

I agree about not buying from Ebay, what about Amazon?

Amazon should be okay if it's sold by amazon directly and there are many good/detailed review. Even so it's better to buy from official HW wallet website or check the package/content carefully if you buy from amazon.
177  Other / Meta / Re: Altcoin Discussion section can change name to Trash discussion on: August 23, 2018, 01:33:08 PM
At this point, disabling signature on this section would be fastest way, even though the spammer simply move to another section.
Maybe delete mega thread/move mega thread to trash can every few days would be effective since the spammer won't get paid and wasting their time.

What to do with topics like these, report to a moderator?

You just wasting your time, it's only effective on section with many real discussion such as Serious Discussion/Development & Technical Discussion.
178  Bitcoin / Development & Technical Discussion / Re: Basics of the Lightning Network - explanation and wallets on: August 23, 2018, 06:49:30 AM
Thanks for neat and well written article, there's few things that i think should be included :
1. Implementation of Schnorr Siganture which reduce transaction size (which have multiple input since LN use 2-of-2 multisig) should be added to "Planned features", even though AFAIK Schnorr Signature should have backward compability.
2. There are few other 2nd layer scaling solution worth mentioned such as Mimblewimble which focus on privacy/fungibility
3. Add to "Useful sources of information"
179  Bitcoin / Development & Technical Discussion / Re: Bitcoin Block time on: August 23, 2018, 06:23:08 AM
The reason I do this discussion is that people dont want to hear about other crypto for payment. I dont understand

Then you, merchant, payment processor or payment gateway should consider use/accept zero-confirmation, it's not too risky if it's for small payment and any explorer/nodes don't detect double-spend attempt (with sufficient fee obviously).
CPFP also help if you want to use your bitcoin immediately.

Someone with good statics knowlege could calculate how average the block time is really. So normally it should be a Gauss normal distribution with the maximum at 10 mins. But it is not, cause e.g. miners are activated or deactivated and difficulty can not react. Look how many blocks are found exactly 10 mins after the last one or even 11 or 9 min.
There is no maximum on the time between blocks, so there is no maximum at 10 minutes. The distribution time between blocks is not a normal distribution. Rather it is poisson with the true mean at ~9.7 minutes. The difficulty adjusts to make it 10 minutes, but new hardware coming online pulls the time down. Since it is poisson, the time can vary a lot, from 0 minutes to several hours, there is no maximum at 10 minutes.
The true mean for bitcoin since genesis block up to now, is ~9.4 minutes last time I calculated this divergence. How did you get 9.7?

AFAIK that was mean in few years ago. My rough calculation also show 9.4 minutes mean time.
180  Other / Beginners & Help / Re: How to make sure that new dapps are not scams? on: August 23, 2018, 05:57:01 AM
If it's really dapp, then it means the source code is available on the blockchain (which anyone can access easily) and anyone can read/audit the code to make sure whether the dapp is scam, buggy or work as expected.

But if you don't have such knowledge, then all you can do are :
1. Check review/comment from people who've used the dapp
2. Check whether someone have review/audit the code and it's result
3. Use website such as which usually only list proper/not scam dapp
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