Bitcoin Forum
May 24, 2024, 01:34:14 PM *
News: Latest Bitcoin Core release: 27.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 [9] 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 ... 135 »
161  Bitcoin / Development & Technical Discussion / Re: Anonymous Transaction Amount via Stealth Addresses on: January 17, 2014, 03:34:35 AM
I think you can simply serach the blockchain for the most often used "denominations" and break your payment amount into them, as a temporary workaround.
162  Bitcoin / Press / Re: [2014-01-13] IT Business : Royal Canadian Mint's version of Bitcoin: MintChip on: January 17, 2014, 02:14:19 AM
Please, let's incorporate this Mintchip into all cryptocurrency exchanges, ATMs etc. Swing this so that this is just a Gov-invented alt-currency.

Then let's all launder our money like hell using MintChip!

Then they will have to close it down/censor the transaction, so it doesn't work.
163  Bitcoin / Press / Re: [2014-1-16] ESPN: Sacramento Kings to accept Bitcoin on: January 17, 2014, 01:52:06 AM
Americans may not know, but NBA is huge in China.

If half of the NBA teams start to accept BTCs, then one more reason for people to ignore the dirty politics.
164  Bitcoin / Press / Re: [2014-01-16] eBay UK to Allow Sale of Virtual Currency from 10th February on: January 17, 2014, 01:36:16 AM
Well done and thanks, Mr Marcus. Smiley
165  Bitcoin / Development & Technical Discussion / Re: Stealth address with SX (anonymous payments) on: January 16, 2014, 01:18:15 PM
I guess sx erases the payee's pubkey and encrypts the payer's privkey after the stealth payment right? If say FBI breaks into Alice's house and seizes her computer, they should not be able to figure out she has paid Bob isn't it?
166  Bitcoin / Development & Technical Discussion / Re: Stealth payments with SX on: January 16, 2014, 09:36:51 AM
The most important difference between this and the deterministic wallet is  that you may never need to publicize your address(defense against Google data mining) to receive payments, which has to be spelled out somewhere I think.
167  Bitcoin / Bitcoin Discussion / Re: Did Ukrainians Almost Take Over Bitcoin? on: January 16, 2014, 03:02:49 AM
Far from it, Bitfury's own farm only contributes 45% to that 45% of hashpower, which gives them about 20% of the total network hashpower, other miners can abandon them at the blink of an eye, in the end they will have to play by Bitcoin's rule.
168  Bitcoin / Press / Re: [2014-01-14] “Bubble” or “Ponzi scheme”: Chinese media keep bashing Bitcoin on: January 16, 2014, 01:26:33 AM
...
Personally I think if you can enjoy life and live in a place that has good infrastructure and services then it is a pretty good thing no matter what the supposed political system is.

Amen. Wealth seems to fix everything. Maybe it makes governments more confident and less fearful when they are on top? When I was a kid China was more like North Korea is today. Now it has vestiges of the "Mao suit" culture, but is much more of a normal nation.

Let's hope it can fix the political system itself as well. With enough economic incentives brought by Bitcoin, people may finally set down to do the work.
169  Bitcoin / Press / Re: [2014-01-14] “Bubble” or “Ponzi scheme”: Chinese media keep bashing Bitcoin on: January 15, 2014, 03:14:42 PM
I think you also need quotes around the word media when talking about the Chinese media. Totalitarian governments don't do media, they do propaganda.  

Had those medias been the mouthpiece types I would have long ignored them, there are a few news outlets in China which withstanded multiple government attacks(Editor-in-Chief sacked and prisoned, etc) and stick to their POVs. Also China is strictly authoritarian rather than totalitarian, or I wouldn't even be posting here. Smiley
170  Bitcoin / Development & Technical Discussion / Re: Provable Sequential Hash Function on: January 15, 2014, 02:53:21 PM

Modular Exponentiation!  Thought it might play a part..  Roll Eyes

'Time-Lock Puzzles' is a new term for me.. It's always in the name. Then you know what to look for on Google.

The idea seems that you can lock data up in such a way that it can be decrypted ONLY after a certain amount of sequential tasks are performed. And this task CANNOT be run in  parallel. Like it.. Seems the inverse of what i was looking for, but definitely in the same ball park.. Thanks

Could it be used as some form of Hash Function ? Or as a sort of POW system..

I am searching for more info now.. {..starts sucking the interweb..}

In principle you can transform just about any block cipher into a hash function using Merkle-Damgard construction.
171  Bitcoin / Press / Re: [2014-01-15] French Senate Convenes For BTC Hearing, Overall Outlook is Positive on: January 15, 2014, 02:34:18 PM
Is this the same "cashless utopia" France we talked about?
172  Bitcoin / Development & Technical Discussion / Re: Provable Sequential Hash Function on: January 15, 2014, 12:57:34 PM
http://www.cs.berkeley.edu/~daw/papers/timelock.pdf
173  Bitcoin / Development & Technical Discussion / Re: SIGHASH_WITHINPUTVALUE: Super-lightweight HW wallets and offline data on: January 15, 2014, 07:54:49 AM
If someone wants to contribute, please state the time/cost required for such a task right here, I believe many people(at least me) will make an assessment.

I am working on this with Peter Todd's help - you can follow my progress here: https://github.com/ciyam/litecoin/tree/OP_CHECKSIGVERIFY2

So far I have only coded the version 3 block change as I am still undergoing quite a bit of a learning curve this might take some time but I am keen to see this through so assuming Peter doesn't lose patience with me we'll get there. Smiley


Thank you, noobish question: the code can be easily migrated to Bitcoin, right?
174  Bitcoin / Development & Technical Discussion / Re: SIGHASH_WITHINPUTVALUE: Super-lightweight HW wallets and offline data on: January 15, 2014, 07:21:09 AM
If someone wants to contribute, please state the time/cost required for such a task right here, I believe many people(at least me) will make an assessment.

Actually, it's inexplicable to me why there isn't a full list of "high-priority problems assigned to no one" right here on this forum, lots of people might have time/money to give for a crowdfunded project, but without knowing what the problems are they can do nothing.
175  Bitcoin / Press / Re: [2014-01-14] CNBC: Bitcoin safe despite Alibaba ban: BTC China on: January 15, 2014, 05:13:41 AM
"The head of one of the world's largest bitcoin exchanges told CNBC that the ban on the virtual currency by Chinese e-commerce giant Alibaba won't affect his business."
The "voucher" mechanism adopted by BTC-China (which of late had only 1/10 the volume of Huobi, by the way) apparently uses e-commerce sites as money transfer channels.  Will China's central bank be fooled by that trick?  Anyway its volume seems to have fallen quite a bit in the last 24 hours.

I doubt anyone is able to take total control of Taobao(the C2C platform using Alipay), since practically anyone is able to open a shop there and now there are millions.

VPN sales(for GFW circumvention purposes) have been banned there for years, but we have always been able to get our hands on one, all you do is selling them under a different name then it's hard to find out.
176  Bitcoin / Press / Re: [2014-01-14] “Bubble” or “Ponzi scheme”: Chinese media keep bashing Bitcoin on: January 15, 2014, 02:05:06 AM
The medias in China probably are more culpable than PBOC for the last crash. All the published policies of PBOC to date are, after all, already implemented in the western nations, real name accounts which only accepts bank transfers, and in China the verification can be done in minutes: put your ID card number and your name in and you are good to go. The Chinese social networks are saturated with all kinds of Bitcoin rumors afterwards, a large percentage of them can be traced back to major news outlets.

It was also for the first time known to me that some of the most open Chinese medias which are famous for being outspoken against the government and calling for democratic reforms, actually hate Bitcoin so much. While they are certainly entitled to their POVs and it's understandable that most journalists are liberals and are naturally suspicious of "getting rich quick" sort of things, the difference between Chinese medias and their Western counterpart is that in China they sometimes directly fabricate facts. One of the major news outlet published a piece, "quoting" Huobi's CEO about a purported plan for Huobi to exit China given the hostile environment, this is a blatant lie and probably what causes the final dip of the price, Huobi has threatened a lawsuit afterwards.

It's great that after all these years of crying wolf many Chinese investors have learned to ignore them anyway.


 
177  Bitcoin / Press / Re: [2014-01-13] IT Business : Royal Canadian Mint's version of Bitcoin: MintChip on: January 14, 2014, 02:54:42 PM
can't deny though, if they implement this they can replace the entire swift network with it and all digital forms of money too, if the rest of the companies get it the network of value of Bitcoin becomes a moot point. But on the upside, they can't replace it's regulation free environment we can still do some amazing things with the technology that there is no way they would allow us to on a government run Coin.

Not necessarily, government will have to censor their transactions, or they would risk violating their own laws, and censorship gives rise to cost, which have to be shared by all the network users, and exacerbated by the general inefficiency of the government, in the end I doubt they will be able to undercut Bitcoin in transaction costs.
178  Alternate cryptocurrencies / Altcoin Discussion / Re: Guard against 51% attack? on: January 14, 2014, 10:19:58 AM
Can we possibly just make it tweakable for the miners to not accept sudden reorg involving large number of blocks?

That doesn't work.  The point is that a new user must be able to tell which chain is the correct one.

Clients could be programmed to give a big warning if a massive re-org happens.  That would help protect them in the short term.

Quote
Even those who have vast mining resources at their whim should know to deploy them gradually, so as to not 51% attack the network.

When a 51% attack happens, even if 100% of the rest of the miners agree, they can't displace the alternative fork.

I intend to mean both methods combined, the miners may have to give in in the end, but there will be a period during which all operations are suspended pending further information. Also for an old user telling which chain is the one being attacked is much easier, new users will just be given the warning.
179  Alternate cryptocurrencies / Altcoin Discussion / Re: Guard against 51% attack? on: January 14, 2014, 08:19:19 AM
Can we possibly just make it tweakable for the miners to not accept sudden reorg involving large number of blocks? Even those who have vast mining resources at their whim should know to deploy them gradually, so as to not 51% attack the network.
180  Alternate cryptocurrencies / Altcoin Discussion / Re: Guard against 51% attack? on: January 14, 2014, 08:06:51 AM
They could certainly send me a fake chain, but it would took them more than millions to convince me if I simply check the difficulty. The whole point of Bitcoin as stated in Satoshi's paper is voting by IP doesn't work, malicious nodes shouldn't win just by numbers.

To send a fake POS chain, they need to control more than half of the stake from before the lock-in.

The point of the POW stage is to make sure that this is well distributed.

Obtaining the POS coins would be made harder, since a lot of the owners of that stake would no longer be on the network and/or would have lost their keys.

The devil is in the details though and PPCoin is the only attempt to do it and that isn't a pure POS coin.

The POW blocks can still be faked, I am able to mine the first 50,000 Bitcoin blocks in a matter of days using my hardware, in fact, one KnC miner equals the total hashpower of the network in the spring of 2011, other than that it's just a problem of faking the signatures.
Pages: « 1 2 3 4 5 6 7 8 [9] 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 ... 135 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!