I am using Linux , i am IT so i am pretty sure that the computer is not compromised
The only thing i see possible i did mistake when i started use bitcoin i used same password as bitcointalk
there is no other possible way the password is 8 char long with Upper and lowercase
i can only blame myself that i was not using 2FA but lesson learned i post this that maybe it can help or will help someone in futur
You are using Linux, you are IT, and you are not using 2FA.  |
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These are not bitcoin but you can start an alt-coin.
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I know this is an extremely rough estimage, but guesstimating from Number of Transactions excl. popular we can speculate that roughly 20 kBTC have been moved from android wallets (assuming the spike is just that). 55 / 20k = 0.2% of funds stolen due to the bad RNG... could've been worse. I feel with the people who lost money, of course. As of today only 51% of users of the Blockchain.info app have upgraded to a patched release, if the pattern is similar with other apps a fair number of wallets might still be vulnerable. But you are right it definitely could have been worse. This is easy to figure out since one could simply screen the blockchain for bad signatures. |
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And the pathological gambler stopped spamming since he lost  Serves them right, I think we've had enough of them. This is the classical gambler's ruin problem. He must lose everything eventually |
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I think this would help: when a block is found, a miner will first publish the header, coinbase tx, hashes of other txs, and a digital signature for the header. When seeing a signed block, other miners and full nodes will check whether it comes from a reputable miner. If yes, they will propagate the message and mine on top of it before it is fully validated. Of course, miners and full nodes will still fully validate the block.
This will reduce the anonymity of miners but joining this scheme is optional. Moreover, most pool operators don't really care about anonymity so this is not a problem. The reduced orphan rate is the most important incentive for miners to join.
This requires a minimum level of trust among miners. However, generating invalid block is a very expensive attack which costs 2500 USD at current rate, and that will be revealed in less than a minute. Also, the attacker's signing key will be blacklisted and he has to accumulate reputation again starting from zero.
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OTP因为成本比较高，后期会考虑增加。
google authenicator 免費的吧 |
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Now we find there is a serious flaw in the random number generator in Android. ( https://bitcointalk.org/index.php?topic=271831.0 ) How are the random numbers generated in Armory? Does it use the random number generated by the OS? How do I know whether my money is safe (except sending them to a new address)? |
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If we can't fully trust the random number provided by the system, I wonder if this would help:
Let Xn, for n = 1, 2, 3, ........ be a sequence of random numbers that being used as k for signature
Let Yn, for n = 1, 2, 3, ........ be a sequence of random numbers generated by the system.
X1 = Y1
Xn = SHA256(SHA256(Xn-1)+Yn), for n > 1
Which means when the first random number is generated by the system, we record its SHA256 hash. The hash will be used as a nonce for the next random random
Therefore, even if Yn is constant, Xn is still a pseudo-random number guaranteed by SHA256.
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In bitcoin wiki ( https://en.bitcoin.it/wiki/Transaction_Malleability), it states that Preventing scriptSig malleability is being considered as well. Currently transactions with anything other than data push operations in their scriptSig are considered non-standard and are not relayed, and eventually this rule may extend to enforcing that the stack have exactly one item after execution. However doing that may interfere with later extensions to Bitcoin. We can make this restriction only applicable to version 1 tx. Therefore, future extension (e.g. script 2.0) can use a new version code and won't be affected. |
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手机验证服务国内有几个平台早都有了啊
其他平台是有，但是没有支持全球的吧？ 不做全球的生意 没必要支持全球吧 而且我只是说的手机验证这个功能，人家早都有了，说明也是早考虑到安全问题的。796既然这么大牌，早都应该做了 bitcoin 的一大好處是可以極低成本做全球的生意, 只是其它大陸平台目光太短淺 |
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question: if i pay a fee for my transaction, can the protocol limit who is capable to mine this transaction and collect the fees with his block rewards [ for example only a miner running the same or lower version of bitcoin] ? having such a function will assure that in time, when the system is matures enough, market laws will allow voting to return to the users. https://en.bitcoin.it/wiki/Economic_majorityCurrently not, but this is not a new idea. This could be done in a soft-fork. Each transaction will include a zero-value output, which the script contains a block height and the corresponding hash. The miner may take the fee only if he is mining on this chain, or the block becomes invalid. |
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incase anyone missed it, i will leave this here... Deposits and Withdrawal Update Finally, the issues with deposits and withdrawals from Mt. Gox are being relieved, but still not at the rate we want. For example it currently takes up to 10 days to process a deposit because our bank, upon receiving deposits, notifies us of the deposit but holds them for 7~10 days before transferring them to our account. This has always been the case, and we were still crediting customer accounts before receiving the funds ourselves, but some cases in which the bank subsequently rejected the deposits meant that we incurred significant losses. The risk is now too high for us to credit accounts prematurely. We are in the process of forming relationships with new partners, banks, and taking other steps -- hopefully we will not only be back where we were before we encountered these issues , but much further ahead. This is just BS. It mentions nothing about withdrawals |
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Not good that a big-time thief like this guy is getting involved with mining. Mining is the way to control Bitcoin. Once you control the mining operation, you can do anything with Bitcoin you want. It not longer is beholden to limited supply or anything. They know this. Once the masses jump into Bitcoin and these mega douches control everything Bitcoin is over, it will be just another exploited currency. The problem is that we are still in their system of monetary control - i.e., they can buy up anything they want and that includes Bitcoin. The only time to strike is is when their system has collapsed.
Please learn how bitcoin works first I know how it works. If you control the mining, you control the voting of the bitcoin network. Once, the masses jump in, all of us "decentralization whores" and libertarians aren't going to have a voice. The Big money will control the mining and the forking of the network and they will lead the masses, who don't understand the need for decentralization, along with them. Once again... LEARN HOW BITCOIN WORKS. The only thing miners "vote" on is which tx is valid in a conflict and which txs are included in the next block. That is it. If a group of miners change the protocol it is a fork and existing users and continue to use the existing (original) Bitcoin. Not if the "original" bitcoin is made illegal. The users can decide which chain they are a part of through client updates and such. Don't sit there and try to tell me that can't work. It absolutely can work. When FTC was forked, we had to update our clients to make sure we weren't on the forked chain, and many were, and were mining and transacting on the forked chain. They could fork the masses right off to a new chain and leave the original hanging with computer nerds and the sound money crowd who were fine with running an illegal chain. It. Can. Happen. Especially if the big players want it to happen, easily once they get everyone on board and the infrastructure built. So shut your ass. Not good that a big-time thief like this guy is getting involved with mining. Mining is the way to control Bitcoin. Once you control the mining operation, you can do anything with Bitcoin you want. It not longer is beholden to limited supply or anything. They know this. Once the masses jump into Bitcoin and these mega douches control everything Bitcoin is over, it will be just another exploited currency. The problem is that we are still in their system of monetary control - i.e., they can buy up anything they want and that includes Bitcoin. The only time to strike is is when their system has collapsed.
Please learn how bitcoin works first I know how it works. If you control the mining, you control the voting of the bitcoin network. Once, the masses jump in, all of us "decentralization whores" and libertarians aren't going to have a voice. The Big money will control the mining and the forking of the network and they will lead the masses, who don't understand the need for decentralization, along with them. Once again... LEARN HOW BITCOIN WORKS. The only thing miners "vote" on is which tx is valid in a conflict and which txs are included in the next block. That is it. If a group of miners change the protocol it is a fork and existing users and continue to use the existing (original) Bitcoin. To be precise, a 51% attacker could implement any soft-fork to the system, i.e. making an originally valid transaction invalid. That's all he can do. So he could blacklist bitcoin addresses, decrease money supply, decrease block size, charge ridiculous tx fee, reverse confirmed transactions, etc. A 51% attacker cannot pull a hard-fork (making an originally invalid transaction valid), e.g. inflating money supply, raising block size, printing money out of thin air, stealing money, etc. I am not just talking about a 51% attack. We are talking about using the majority of the mining base to fork the chain while altering the protocol on the fly to adopt to government regulations - they can change the max number of coins, just as they can alter the blocksize, etc. You need a mining base to maintain the particular network for each chain - that is why they would take over the mining infrastructure. But they also need to alter the protocol. Taking over Bitcoin will be easy once the infrastructure is established AND the masses join... because the masses can be duped into anything. they will take it over, eventually, if allowed to. Whether or not we maintain the original in a black market is a different story. Last time... LEARN HOW BITCOIN WORKS. |
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Not good that a big-time thief like this guy is getting involved with mining. Mining is the way to control Bitcoin. Once you control the mining operation, you can do anything with Bitcoin you want. It not longer is beholden to limited supply or anything. They know this. Once the masses jump into Bitcoin and these mega douches control everything Bitcoin is over, it will be just another exploited currency. The problem is that we are still in their system of monetary control - i.e., they can buy up anything they want and that includes Bitcoin. The only time to strike is is when their system has collapsed.
Please learn how bitcoin works first I know how it works. If you control the mining, you control the voting of the bitcoin network. Once, the masses jump in, all of us "decentralization whores" and libertarians aren't going to have a voice. The Big money will control the mining and the forking of the network and they will lead the masses, who don't understand the need for decentralization, along with them. Once again... LEARN HOW BITCOIN WORKS. The only thing miners "vote" on is which tx is valid in a conflict and which txs are included in the next block. That is it. If a group of miners change the protocol it is a fork and existing users and continue to use the existing (original) Bitcoin. To be precise, a 51% attacker could implement any soft-fork to the system, i.e. making an originally valid transaction invalid. That's all he can do. So he could blacklist bitcoin addresses, decrease money supply, decrease block size, charge ridiculous tx fee, reverse confirmed transactions, etc. A 51% attacker cannot pull a hard-fork (making an originally invalid transaction valid), e.g. inflating money supply, raising block size, printing money out of thin air, stealing money, etc. |
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Not good that a big-time thief like this guy is getting involved with mining. Mining is the way to control Bitcoin. Once you control the mining operation, you can do anything with Bitcoin you want. It not longer is beholden to limited supply or anything. They know this. Once the masses jump into Bitcoin and these mega douches control everything Bitcoin is over, it will be just another exploited currency. The problem is that we are still in their system of monetary control - i.e., they can buy up anything they want and that includes Bitcoin. The only time to strike is is when their system has collapsed.
Having 51% of the network doesn't mean you can just do whatever you want with BTC. any kind of outright manipulation would be obvious, crash the price, and destroy their investment. You can use a 51% attack to destroy bitcoin, but you can't use a 51% attack to just steal people's money I am talking about manipulating the mindless masses into using a forked chain that they control once Bitcoin has taken off. They won't know any better, they won't understand the need for the current protocol. They will just understand the convenience and as long as the forked chain has that and they can spend it they won't care about whether the amount is fixed or any of that. I'm not talking about a 51% attack to steal coins - that wouldn't be worth their time. These are already happening. Look at those scamcoins. Is bitcoin hurt? I don't think so |
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Not good that a big-time thief like this guy is getting involved with mining. Mining is the way to control Bitcoin. Once you control the mining operation, you can do anything with Bitcoin you want. It not longer is beholden to limited supply or anything. They know this. Once the masses jump into Bitcoin and these mega douches control everything Bitcoin is over, it will be just another exploited currency. The problem is that we are still in their system of monetary control - i.e., they can buy up anything they want and that includes Bitcoin. The only time to strike is is when their system has collapsed.
Please learn how bitcoin works first |
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For option 2 do you mean the nonce would be something like HASH(1), HASH(2), HASH(3)........?
So why not simply use 1, 2, 3...... as the pubkey?
Because a third party mining vanity addresses for you would need to prove to you that he didn't choose the pubkey using ECC (and knows the private key). If you have a hash pre-image, that's a proof. Also a simple sequence like 1,2,3 may end up in a weak case of a pubkey (I'm unsure if ECDSA has weak keys). If you mine for yourself, then you can count simply as you said, but it would be better to choose the sequence starting from a random 32-byte value. Just realize this could be done in a completely trust-free way. The customer will provide 2 public keys, and request the miner to produce a 2-of-3 multisig address. The drawback is a bigger scriptSig is needed |
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應該在這之前就會強行平倉吧 借出BTC，抵押物是股票，如果对方爆仓无法偿还BTC，股票又贬值了怎么办？ 796即将开始的融券能介绍一下么？到底怎么操作？
对融资融劵的构想就是:释放流动性并且让BTC与股票还能收到利息，使用BTC为抵押物以融入股票可进行股票做空操作，使用股票为抵押物融入BTC可以进行其它交易。投资者借出本来存放就不会产生效益的BTC与股票将开始会有利息收入，这样会吸引较多市场上的资金与股票，一旦形成规模对交易所发展就极有为利。 |
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I was thinking of trying this out.
Does anyone know if there is a pool like Eligius for Litecoin that accepts non-standard transactions?
Maybe do it on testnet |
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