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1381  Bitcoin / Development & Technical Discussion / Re: Once SegWit is implemented, what would be the real max block size? on: June 04, 2017, 03:20:42 PM
1 MB or 4 MB?

It depends on how you define "real max block size".  Does that definition include the witness data or not?  Does that mean effective real max block size under perfect circumstances or the real world size one is likely to see in common use?
1382  Bitcoin / Bitcoin Technical Support / Re: Lost about $400-500 worth of bitcoins in encrypted wallet (forgot PW) on: June 03, 2017, 11:46:38 PM
Is there an expert or some type of program I could use to get the password back? Even if he takes like 40% I'm gaining money i should have

Write down whatever you remember now.  The more you remember the better.

There are tools and here is one:
https://github.com/glv2/bruteforce-wallet

Likewise, there are some other tools discussed here in this thread.  There may be more later in the thread:
https://bitcointalk.org/index.php?topic=85495.msg942171#msg942171
1383  Bitcoin / Development & Technical Discussion / Re: Preventing loss of Bitcoin addresses on: June 03, 2017, 08:02:55 PM
If one of your private keys were compromised, then whoever has that private key will be able to figure out the rest of your private keys. All they have to do is go a few billion keys +/- of the one they have and they can get all of the private keys that you will ever use.

BIP32 derivation is vastly superior. In order to figure out all of your private keys, an attacker would need to know the master private key and the derivation paths. This means that if one of your private keys were compromised, your whole wallet isn't compromised. It is far easier to protect one key than it is to protect billions of keys.
OK, we know the risks of getting stolen are higher. But I still believe the benefits outweighs the risks, just be careful. But are there any technical risks?

BIP32 seems too complicated, I am looking for something I can calculate in mind without effort. Then can easily obtained by hand, without additional code I may not have access to, and still secure (i.e. not technically exploitable).


What if we change the way its range is obtained to a less obvious one, like this. The good thing is that we can set our own simple customized rules:

Random key:
Code:
0x72401339D3318F8FA1707C21447D220ED03D1086E1D0388F976C8DE223619C77

Random mask:
Code:
0xFFFF00FFFFFFFF00FFFFFFFFFFFFFFFF00FFFFFFFFFFFFFFFFFF00FFFFFFFFFF

In this case, valid range would be:
Code:
0x72400039D3318F00A1707C21447D220E003D1086E1D0388F976C00E223619C77 - 7240FF39D3318FFFA1707C21447D220EFF3D1086E1D0388F976CFFE223619C77

Not sure if one would even bother try the same thing you did with the other to figure out near keys, that is in case any of my keys are stolen.

Or we can try more tricky things, yet without loosing simplicity and portability (i.e. can be write down in a piece of paper, easily remembered, easy to execute).


Thank you for reading!

You can always write up a BIP and implement something with your proposal and see if there is demand for it knowing the strengths and weaknesses.

1384  Bitcoin / Press / Re: [2017-06-03] Here’s how much a bitcoin is actually worth on: June 03, 2017, 06:30:08 PM
The headline and the article are a complete mismatch.  They don't say how they compute anything. Seems like click bait.
1385  Bitcoin / Bitcoin Technical Support / Re: tracing a wallet provider from an address on: June 02, 2017, 02:10:15 PM
How long ago was "long ago"?  That might eliminate some. 
Did you try blockchain.info?  They are one of the longest running ones so it is a possibility.  The problem is that they store the private keys on your computer too and do not keep backups, so even if it was them, they probably wouldn't be able to help.

If you have the public address or transaction ID someone might have some suggestions, but that is something of a long shot.

1386  Bitcoin / Bitcoin Technical Support / Re: Expartner hijacked wallet, now how can I prove... on: June 02, 2017, 02:05:14 PM
Regarding the other questions you'd ask in the PM - I am posting it here so that others can clarify things too, if needed. 

This is assuming you are using Bitcoin Core (Bitcoin-QT is what the older versions were called) and probably what he was using:
1. The password is most likely the password to the wallet.dat file - if you have a copy of it, you should be able to unlock it with that password.  That just unlocks the wallet.dat file.   If you and your ex shared the wallet.dat on a single computer, he could have changed the password there.  Since you said he "gave you a copy" without access to the computer or wherever this copy was, he couldn't change the password.  Of course if he had access to this copy and the original he could of course change the password.
2. The private keys let you spend the bitcoins.  The public keys are what people can send bitcoins to. It is fine telling people the public keys, but not the private ones.
3. If you have the public keys from the wallet.dat file, then you can see what the balance is for each address and see if they are moved.  They'll look something like this:
1PXQd9Fg8qZ2bC2f3dpiWLWZjXCF28euJe  (this address just had a transaction in the block chain and I just picked it at random)

You can look balances, transactions etc up on "block explorers" like this:
http://blockr.io/address/info/1PXQd9Fg8qZ2bC2f3dpiWLWZjXCF28euJe
http://blockr.io/
http://blockchain.info/


If he was using a different wallet it is possible the "password" is a sequence of words, like "dog blue water orange etc".  If the password is a sequence of words like that, it is used to derive the private keys. 

Whatever you do, do not share the password, the wallet.dat, or the private keys with anyone unless you trust them 100% because they could steal the coins with them.  I say that because people will ask for it, like, "Oh, send me the password and wallet.dat and I'll help you unlock it" - there are some trustworthy people of course, but there are many who are not and will just steal your bitcoins.

The things to check:
1. What wallet software is it for?  If there is a wallet.dat file, it is probably Bitcoin Core.  If the name is something else, we might be able to determine the software used.
2. What OS are you using?  (if it is Windows 7, for example, I would be very careful if the wallet.dat is there as compared to newer versions).
3. Is the "password" a sequence of words or just something like "thisISmyPASSWORD"?  (Don't tell us the words or the passwords, you can say which it is though.  ;-)  )
4. If the coins are still there, I'd also ask your attorney what they recommend - do they recommend moving half the coins into a different address?  My concern with moving all might be that he might then argue, "Oh, see, she is trying to steal the coins".  Your attorney might have good advice.


1387  Bitcoin / Bitcoin Technical Support / Re: Expartner hijacked wallet, now how can I prove... on: June 02, 2017, 10:02:38 AM
1. The wallet.dat won't be 20gb, that probably includes some of the block chain.  The wallet.dat includes the private keys which is what you'd need.
2. As far as using it on an internet connected computer, that can be risky depending on the OS, number of coins, etc. You can always use the public keys to check balances. Using Linux Tails (https://tails.boum.org) should be pretty safe also for a large amount of value.
3. Depending on the country, many would divide assets and clearly they have value even if it is "just code."

Good luck, if you do move coins, talk to your attorney first for legal advice first.

And whatever you do, don't send the wallet.dat to anyone and don't share the private keys.
1388  Bitcoin / Bitcoin Discussion / Re: CAUTION: If the exchange you are using doesn't list BIP148 you are being SCAMMED on: June 01, 2017, 03:34:50 PM
As of a few days ago, coinbase support recommended people move their coins off coinbase prior to August 1:

Eric - Coinbase support:
Quote
When Ether forked into ETH and ETC, we provided a way for our customers to withdraw ETC for a limited time--as a courtesy. But we only supported one chain moving forward.

There is no guarantee that we will do the same for future forks, as we consider each fork individually. A decision on BIP148 has not been made yet.

As @Gleezy said, the best advice is to withdraw your coins before the fork to your own wallet. Then you have complete freedom with your coins after the fork occurs.

https://community.coinbase.com/t/what-is-coinbases-plan-regarding-bip148/15391
1389  Bitcoin / Press / Re: [2017-05-30] Bitcoin could hit $100,000 in 10 years on: June 01, 2017, 11:53:22 AM
The numbers makes sense, but some thumb suck percentages are being used :

~ •Bitcoin could make up 10 percent of the $5 trillion average daily volume in the foreign exchange market in 10 years.

~ •Its market capitalization could grow to $1.75 trillion which would make each bitcoin worth $100,000.

This would mean that $175 billion worth of bitcoin would be traded every day. This sounds a bit crazy at the moment.  Huh

There are some optimistic percentages and figures being thrown around, but the calculations are sound. Let's hope this one is spot on too, I

would consider early retirement if that happens.  Grin

It seems to me that four years ago people were also skeptical about bold forecasts. Bitcoin has become very popular over this time, so we can not know what will happen in the next few years.

This is exactly right.  Since I first read about bitcoin on Slashdot in July 2010, every prediction has been:
1. that $<whatever> ($0.10, $1, $10, $30, $100, $300, $1000 ...) is a bubble;
2. it is unsustainable and will crash;
3. $<whatever price higher than today>  will never happen;
4. it is "tulips";
5. Not to mention the ridiculous "I'll just duplicate my wallet.dat and double my coins";
6. "<2010, 2011, 2012,2013, 2014, 2014, 2015, 2016> is too late, we're not early adopters".

Admittedly at some point this will be true - bitcoin will stop growing, but if scaling is fixed and segwit is activated the growth will then be huge. An order of magnitude or two (or three?) worth of growth.  With scripting versions in segwit, it opens lots of opportunities for reenabling opcodes that were disabled years ago which opens the doors to many, many uses all backed by the block chain.  Ditto lightning.  Ditto a 2MB (or more) legacy block size non-witness increase.  Ditto sidechains.

The potential has and continues to be there if features are enabled.

1390  Bitcoin / Press / Re: [2017-06-01]ETH Listed in China Exchanges, BTC Compared to “Nokia” on: June 01, 2017, 09:55:06 AM
It is more like ETH is programmable fiat - centrally controlled, perpetual inflation with a programming language attached.
1391  Bitcoin / Development & Technical Discussion / Re: Invalid bitcoin address on: May 31, 2017, 02:33:41 PM
1DJJoJ4sxwJdwExTsoDg­8qXL1FEozDGQEF

the code is invalid in mocacinno.com/ how then can a valid code be gotten? The code was given by blockchain. Please, how do I upload a picture so that i may show you the given address in the wallet

I presume by "blockchain" you mean "blockchain.info"?  If so and it was copied fully, I would guess blockchain.info has a bug.  

However blockchain.info doesn't recognize it either:
https://blockchain.info/search?search=1DJJoJ4sxwJdwExTsoDg%C2%AD8qXL1FEozDGQEF



You can upload the screenshot to a 3rd party site like imgur.com and link it.
1392  Bitcoin / Development & Technical Discussion / Re: Invalid bitcoin address on: May 31, 2017, 02:24:48 PM
1DJJoJ4sxwJdwExTsoDg­8qXL1FEozDGQEF

this is the bitcoin address.

I tried it on several other bitcoin platform but i still got the same report. But when i post my own wallet address, it is valid. So I told him to take a screen shot to see if there was any mistake but it was thesame.


Where did you obtain this address?  It does not appear valid.

http://lenschulwitz.com/base58
https://thomas.vanhoutte.be/tools/validate-bitcoin-address.php?address=1DJJoJ4sxwJdwExTsoDg%C2%AD8qXL1FEozDGQEF&submit=
1393  Bitcoin / Press / Re: [2017-05-31]Bolivian Authorities Arrest 60 Bitcoiners, Reiterate Virtual Currenc on: May 31, 2017, 12:00:07 PM
Poor bitcoin holders Sad. It`s interesting, how do they find those 60 bitcoiners? Is it technically possible to trace such transactions?

The article mentions how they did it:

"The Bolivian bitcoiners were arrested for seemingly distributing bitcoin-related pamphlets at the Cine Center of Santa Cruz de la Sierra, and possibly planning to sell or mine bitcoin, as according to the statement they were gathered and “carrying out training activities related to the investment of money with characteristics of multilevel schemes”.

"
1394  Bitcoin / Press / Re: [2017-05-24]Bitcoin Will Hit $1 Million in 5-10 Years, Says PayPal Director on: May 29, 2017, 10:42:29 PM
Only a small number of people think exponential. Be one of them.

You are right. Since 2009, 2010, 2011 thinking that way has paid off.  $1 million is quite high, but people said the same at $1,  $3, $10, $100, $1300, $2790 etc
1395  Bitcoin / Press / Re: [2017-05-24]Bitcoin Will Hit $1 Million in 5-10 Years, Says PayPal Director on: May 29, 2017, 07:49:06 PM
6-7 years ago, is there a someone who predicted the future price of bitcoin? I don't think. Some people may be sensed the potential and made some investment but even them they didn't predict the actual price of today. $1 million is a disputable predict but also be possible the growth of this crypto money industry looks logarithmic.


One example from June 2011 (almost exactly 6 years ago), talking about thousands to 10s of thousands. There were others:
https://bitcointalk.org/index.php?topic=12156.0
1396  Bitcoin / Bitcoin Technical Support / Re: Transaction does not exist. on: May 29, 2017, 07:47:12 PM
Have you read the About TA section below? Your question is already answered there.

Quote
Why does it say “Transaction does not exist”?

In the following cases, you may be told that your transaction does not exist:
1) Too low fee: We only provide accelerator services for those with at least 0.0001BTC/KB transaction fees;
2) Node reboot: When a Bitcoin node is rebooted, synchronization of transaction data may be delayed. You can try again later;
3) Previous transaction unconfirmed. Your transaction can’t be confirmed if previous transactions connecting to yours are unconfirmed. You’ll need to wait till all previous transactions are confirmed first. You can also use our accelerator to help with that.
We can’t accelerate confirmation of “Double spent” transactions either.

Also another trick for you, free of charge: Wait for  xx:00 o'clock and submit your transaction immediately. It usually works.


So, is this transaction stuck now?

https://blockchain.info/tx/a07cbad4187b6ccf606452b6574fb9332afe0367e9add3bfe250094d7a2e597f

I just went through this transaction stuck.

I sent what egifter.com said to send as fee's.

I'm going take a nap, I been on this all day.

If they said 50 sat/byte, you'll have to ask them why their code is broken. In the meantime, try accelerating it as above. 😀
1397  Bitcoin / Development & Technical Discussion / Re: Coins of Satoshi on: May 29, 2017, 03:44:01 PM
What if he never comes back? We could agree on a date, about 80 years from now(?), on which we give certain parties access to the never touched coins.

What if he returns 150 years from now? Why do you think it is okay to steal?
1398  Bitcoin / Bitcoin Discussion / Re: Small fortune, now which country ? on: May 28, 2017, 02:34:13 PM
It will be a lot of choice because there are many people here. But I believe that the place I am staying at this time is the best place. The best thing is to live in the country where you were born and also where your ancestors are. It's the hometown that always makes everyone want to come back. You do not need another place, you just have to stay where you are born.

You´re so right, god (whichever) bless you. but i have no family to speak of,, and of all negatives that may endure, i´m free ! I said, i´m 53, but that may be a game changer as well.



What is your current citizenship?  If it is US recall the requirement of paying taxes on worldwide income (or the "exit tax" if you renounce). As someone mentioned above, consider Puerto Rico due to the tax laws for gains for US citizens who are residents.  It also depends on what you consider "a small fortune" - double digit millions, single digit millions, hundreds of thousands. And if you intend to realize gains over time or in a single year or over a decade for example.

One option would be to realize the gains while a PR resident, then travel or move somewhere thereafter.



Here is a bit about it:
https://www.google.com/amp/s/www.forbes.com/sites/laurengensler/2015/02/11/puerto-rico-new-age-tax-haven/amp/
1399  Bitcoin / Press / Re: [2017-05-27] Bitcoin Experiences an Intense Flow of New Money and Mainstream Att on: May 28, 2017, 11:13:53 AM
Attention from the mainstream media always helps, but they time on time again don't manage to describe Bitcoin properly. I have constantly been hearing that it's purely the blockchain as technology that gives Bitcoin value, but they fail to name up why Bitcoin is gaining big time in popularity. I don't hear anything regarding Bitcoin's decentralized nature in the way that you don't need any entity in the middle to send and receive money, that you can use Bitcoin to store value outside the banking system, etc. Or.... It's not being mentioned on purpose....

They miss the big picture that while the block chain is valuable, what give the block chain value is that it is secured by a huge distributed (ignoring for now centralization of miners) system backed by a huge amount of value. Without the incentive to secure the block chain, bitcoin wouldn't be worth much.
1400  Bitcoin / Press / Re: [2017-05-21]IRS Probe of Bitcoin Goes Too Far, GOP Warns on: May 27, 2017, 11:59:04 PM
Yet they don't investigate Nazi Trumps refusal to produce his tax returns........

Yet another reason to abandon centralised exchanges, especially US ones.

The ones that would be investigating something that is perfectly legal  (or advocating doing so) - not producing tax returns - are the Nazis and leftist fascists authoritarians.  In a free country, that which is not illegal is legal and investigating something that is legal is the trick authoritarians use the world over to control people.

Agreed that many should avoid centralized exchanges where possible.

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