|
What he mined was not bitcoins, but altcoins.
You can do the same now, if you install some of the first versions of bitcoin. The client would mine coins, but since old clients are not compatible with the current blockchain, the coins would be worthless. You would be making your own blockchain, which would practically be your own altcoin.
The same happens if you mine without connection to internet. You might succeed in mining "coins", but the blockchain could not know it, and wouldn't accept your coins in a later time...
So, no way to reclaim coins, because there are no coins.
|
|
|
|
I want know, Is Python good for bitcoin apps?
Python is excellent for bitcoin apps. What makes is so good is that it already has good easy to use libraries for doing all the math behind bitcoin. Support for: big numbers, SHA256, ripemod160, elliptic curve operations etc... Those can be a real PITA if you have to write any of them in C++, or whatever. Actually C++ also has some libraries you can use, but at least those that I have seen are quite difficult to use and complicated. On python being slower... yes, compiled languages are faster, but you wont be needing to use the full capabilities of a computer for doing bitcoin operations. One example of a python program is Electrum |
|
|
|
No, I didn't forward. I had the hope that they would notice it here. If you are more active on github than me, feel free to report it.
I think I stumbled over it, when I tried to understand the signature verification part. If I remember correctly, the python ecdsa module can only take uncompressed public keys and that's where it's used.
Ok. good to know. I will try to report it to the Electrum dev team sometime this week or the next. It is great to get as many bugs fixed as possible. |
|
|
|
I'm currently trying to understand electrum's approach to decompress compressed public keys. However, I'm struggling with two things: - What is the meaning of the offset? Why is it needed? Other implementations seem to be fine without it.
What are the mathematical foundations? Why does x + offset still result in the same y (or does it?)? - When calculating y^2, why is the coefficent a multiplied by x^2 instead of just x, like in the basic elliptic curve equation?
Could this be a bug, that has not yet been discovered, because a is 0 in secp256k1?
Did you ever forward your find to the Electrum team so that they can take a look at it and fix it? It is indeed strange that they have the "offset" variable, which could only ever return false results if it is not 0 On the other hand. When does Electrum use that function? I suppose it is used very rarely, and that is why that bug has not been found before. |
|
|
|
Bitcoin would crash to $4000. Remember 2013-2014. Crashed from $1000 to $200
In 2013 there was a major hack on the mtgox exchange and that was the reason of losing faith in bitcoin and hence the crash in bitcoin price. Now there are no such bad news and that is why I do not believe bitcoin will crash as much. |
|
|
|
in your case he seems to be mixing the coins which is making it practically impossible to trace.
How do you know that? I am interested in combing through blockchain and would also like to be able to recognize when that happens. So, what are the signs to look for? |
|
|
|
I did a format on my old pc back in 2012/13.
After scans with recurva i cant find anything called wallet.dat, idk witch wallet i have used.
Is there a way this wallet is not called wallet.dat and i need to check some other files?
Some of the oldest versions of bitcoin core named the wallet.dat file just "wallet" without the .dat part. How old is/was your wallet? |
|
|
|
|
The bitcoin mining difficulty is so high, that even a super fast laptop couldn't produce enough satoshis to pay the electricity it consumes. That means it is more cost effective to just buy coins.
To mine bitcoins you would have to buy equipment specifically made for mining bitcoins.
However, it is possible to mine some altcoins with a computer and then you can convert those to bitcoins....
|
|
|
|
Although the price of bitcoin is recovering after the cryptocurrency market crashed, will it have negative impact to the entire industry?
Nah. When did the cryptocurrency market crash? I have not heard about that. Please tell me more  Even at its lowest it was still higher than what BTC was in November !!!! And 10 times higher than at the beginning of 2017. I would not call that a CRASH. Maybe recovering a bit from a short and insanely fast increase in its value. |
|
|
|
President Nicholas Maduro ordered the issuance of the Venezuela's national cryptocurrency. Whitepaper to be released on January 14. What do you think about this? How will it impact on the cryptocurrency world?
It depends. Will they be able to "print" unlimited amounts of new coins and thus be able to inflate its value like they do with paper money? I think no-one will be interested if that is possible. No impact to crypto world, except that other cryptocoins will probably become more easily accepted. |
|
|
|
Open your eyes! There are actually 3 accounts on thet page that DO match that description. 8021 BTC, 8000 BTC and 7941 BTC One of them last touched in 2013, another in 2009 and third in 2010 And the OP did not even say that his coins would be in one wallet. PS: Yep, I do not believe him either, but anything IS possible. |
|
|
|
To be able to "hack" bitcoin you would need to either crack the cryptography used in bitcoin, find a vulnerability in one of the random number generators or find a serious flaw in the implementation. I don't see how writing your own ecdsa software and hash library and analyzing addresses in the blockchain could help you crack bitcoin. Yes. surely you would learn a lot about how bitcoin works and where its security is based on, but apart from that? What? Finding keys to some weak brain wallets that haven't been found already? "How to Become a "World Class Bitcoin Hacker" ... Become Famous, Rich, ...  About that... Do you really think a world class hacker would be famous, which means that everyone knows who he is and that he is a criminal? Not very smart if you don't want to get caught. The cryptography behind bitcoin is hard to crack. It may not be impossible, but to achieve that you would need a lot of luck and you would also have to be a genius. And all you would really need to study is the cryptography, not bitcoin... |
|
|
|
I suspect that by 2.0+ much of our 'open-source' will have gone away, because this stuff is too valuable to give away for free, thus IMHO if I had '3.0' today, I would wait until the right time, so that you don't have to give it away, just for another guy to steal and market it, ...
Open source is a good thing, because bugs are corrected faster as there are more eyes searching for them. Also it is easier to make an improved "bitcoin" when the source code is available. It sucks and I'm not advocating, but this is the TREND, there was no such thing as 'free software' prior to 1999, and we're almost at 19 years, and NOTHING lasts forever.
There has always been free software. The concept of selling software is much much newer. |
|
|
|
can you let me know which country can do withdrawal for 100million usd fund?
I really don't mind pay 50% tax to gov or whatever,I just want to cash out.
is US legal for 100million fund withdrawal?how much taxes I need to paid for that?
The worst case is that you will have to pay taxes to 2 countries. Your own and the country that you sell them in. That could happen if your country does not have a tax agreement with the 2nd country. And of course it is legal to withdraw money. Could be difficult to get that much cash though. |
|
|
|
How does one handle their wallets when the need arises to change devices (i.e. time for a new PC)? Do you do a wallet restore on the new PC?
Safest way is to create a new wallet in your new device and transfer your coins to that wallet. A little more expensive now, when transfer fees are high, but if you don't have too many addresses it doesn't cost THAT much. If you do this, then you do not need to worry, that the next owner of your machine could somehow be able to restore your wallet from your HD and spend your coins... |
|
|
|
Wallet.dat file is a data file, that is not in readable format. So your file could be uncorrupted. If everything else fails, you can try to use a hex editor and manually search your private keys from your wallet.dat file. (Some examples of hex editors: bless in linux and frhed in windows) Search for: "6B 65 79" =key, and some lines later the "04 20" and the next 32 bytes could be a private key in hex. PS. Posting a part of your unencrypted wallet.dat file to the forum might not be a smart move. There could be some keys in that pasted snipped  |
|
|
|
I have an idea and wanted to start a Crowdsale (ICO), but the problem is that I don't have the technical knowledge and patience to do everything myself.
I DON'T have the technical knowledge to pull this off alone.
I need loyal and trustworthy individuals.
I need developers, marketing, etc. on my team to help nurture my idea to fruition, and in turn, my idea to nurture everyone involved; whether it be the dev team and the investors who believe enough to invest.
I have a secret for you. A great idea is almost worthless in itself. It is EASY to get great ideas. What is not easy is developing, working and marketing the idea. Making others see and understand the potential in it. If you do not have the drive, patience and willingness to work on it, nobody will want to invest in your idea. Technical knowledge can be obtained. If you really want to, you can learn almost anything in 6-12 months. All you really need is the drive to really want to succeed... OR you need loads of money. if you have that then others can do the rest. |
|
|
|
For your use-case a paper wallet would be better. Who knows if/how your hardware wallet will work after 20 years. The device can break too. The main advantage of HW wallet is if you access your wallet often. then it makes sure your private keys are not accessible to hackers who might have gotten access to your computer. Paper wallet is safest in your case. With it you can always get your private key. And btw. a paper wallet does not have to be on actual paper. You could eg. carve it on a piece of PVC and bury it somewhere. And make a treasure map of it |
|
|
|
Thanks,
I meant same process, If I could directly transfer the BTC back to Kraken without any other online wallet, just import my paper wallet address from Kraken.
I do not know if it is possible to import your own private key to kraken. Probably not, but there are some exchanges that allow that. Easiest solution is to install eg. copay to your mobile phone and scan your private key with that, and then send the BTC to wherever you want without any fees except miners fee ofcourse... |
|
|
|
|
Show Posts
