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Content | Score | Started by | Date posted | ||
GHash.IO and double-spending against BetCoin Dice Bitcoin Discussion
You don't need to solve a block for this to happen, so what is the benefit of ha…
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n/a | gmaxwell | November 13, 2013, 11:32:54 AM | ||
Make transactions with unusually high miners fees non-standard Development & Technical Discussion
https://github.com/bitcoin/bitcoin/pull/2949
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n/a | gmaxwell | November 13, 2013, 03:06:42 AM | ||
Make transactions with unusually high miners fees non-standard Development & Technical Discussion
Initially I thought the OP suggestion was bad, but now I think it is good with y…
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n/a | gmaxwell | November 13, 2013, 02:31:29 AM | ||
Discouraging "Selfish" mining Development & Technical Discussion
I wonder if transactionfee seconds is more interesting that transactionseconds?
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n/a | gmaxwell | November 13, 2013, 01:42:00 AM | ||
bitcoin-qt latest version Development & Technical Discussion
You would be able to spend an uncertain amount between zero and all of coins tha…
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n/a | gmaxwell | November 12, 2013, 09:30:07 PM | ||
Make transactions with unusually high miners fees non-standard Development & Technical Discussion
I'm not sure if this has been proposed before, but I think it would be a good id…
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n/a | gmaxwell | November 12, 2013, 08:37:08 PM | ||
How much blockchain required for raw transactions? Bitcoin Technical Support
With the way that bitcoind works currently you will have to have the entire bloc…
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n/a | gmaxwell | November 12, 2013, 03:06:17 PM | ||
Delayed transactions (using nTimeLock) Development & Technical Discussion
I think the no replacement version is at least not terribly worse. Replacement r…
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n/a | gmaxwell | November 12, 2013, 12:42:40 PM | ||
Does bitcoin use Dual_EC_DRBG in any way? Development & Technical Discussion
The number has gone up quite a bit since then since the hashrate is rapidly grow…
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n/a | gmaxwell | November 11, 2013, 04:42:32 PM | ||
GHash.IO and double-spending against BetCoin Dice Bitcoin Discussion
But (1) doesn't explain why ghash found 0 blocks to their address during the att…
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n/a | gmaxwell | November 11, 2013, 02:01:27 PM | ||
Someone sending out MilliBits Bitcoin Discussion
So, my guess is it's something with tainting other coins.Users of bitcoind / bit…
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n/a | gmaxwell | November 11, 2013, 09:46:54 AM | ||
GHash.IO and double-spending against BetCoin Dice Bitcoin Discussion
Unconfirmed double spends are also perfectly possible without any hashpower at a…
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n/a | gmaxwell | November 11, 2013, 01:50:38 AM | ||
Selfish Pool Watch Mining speculation
Forget selfish, try double-spending: https://bitcointalk.org/index.php?topic=327…
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n/a | gmaxwell | November 11, 2013, 09:36:59 AM | ||
Mining Protocol Vulnerability Mining
Thats describing a block withholding attack. The idea is that you mine normally…
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n/a | gmaxwell | November 11, 2013, 08:27:35 AM | ||
Discouraging "Selfish" mining Development & Technical Discussion
For block-height ties, prefer the block whose locally-observed arrival time is c…
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n/a | gmaxwell | November 10, 2013, 05:55:02 PM | ||
Defending against Selfish pools with BFGMiner and GBT Pools
Well, no. He's right, p2pool doesn't work on ASICMiner Blades, on the KnC machi…
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n/a | gmaxwell | November 10, 2013, 06:31:17 AM | ||
Do pools make Bitcoin insecure? Bitcoin Discussion
If you want to encourage P2Pool use you can make it in more people's interest by…
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n/a | gmaxwell | November 10, 2013, 02:20:58 AM | ||
Should there be a BIP for tracking stolen coins and "dirtiness" percentage Bitcoin Discussion
Fungability. Do you speak it??
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n/a | gmaxwell | November 10, 2013, 02:14:39 AM | ||
Message to devs from merchant Development & Technical Discussion
Crunch. Some time after i will sure need to rent super node at AWS for that with…
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n/a | gmaxwell | November 10, 2013, 01:16:30 AM | ||
Message to devs from merchant Development & Technical Discussion
Can you explain better what limitations you're facing. In other words, "Please e…
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n/a | gmaxwell | November 09, 2013, 11:34:10 PM | ||
GHash.IO and double-spending against BetCoin Dice Bitcoin Discussion
Taking irreversible actions on unconfirmed transactions is not safe. This is not…
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n/a | gmaxwell | November 09, 2013, 04:18:17 PM | ||
[BRAINWALLET] NoBrainr - a hackproof cold wallet generator in 1024 bytes Development & Technical Discussion
Of course the dictionary is essential, but the point is that 1024 bytes / 25 lin…
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n/a | gmaxwell | November 09, 2013, 12:25:36 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
I'd like to think that people will agree to proof of stake before surrendering b…
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n/a | gmaxwell | November 09, 2013, 12:35:41 PM | ||
If you used Brainwallet.org - MUST READ! - Security Breach! Service Discussion
It's run by "Joric". As was the similar wallettools.appspot stuff which predated…
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n/a | gmaxwell | November 08, 2013, 10:13:43 PM | ||
Do pools make Bitcoin insecure? Bitcoin Discussion
As they are usually implemented today pools create a substantial amount of centr…
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n/a | gmaxwell | November 08, 2013, 09:07:29 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
Call me old fashioned but I thought a research paper normally involves research…
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n/a | gmaxwell | November 07, 2013, 05:26:16 AM | ||
For fun: the lowest block hash yet Development & Technical Discussion
Really the network has only done about 73.6 bits of work so far, our lowest is l…
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n/a | gmaxwell | November 06, 2013, 11:13:24 PM | ||
Defending against Selfish pools with BFGMiner and GBT Pools
most modern hardware does not work well with it - that's why people don't use it…
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n/a | gmaxwell | November 05, 2013, 09:47:02 PM | ||
Defending against Selfish pools with BFGMiner and GBT Pools
Nice, but you have to have a bitcoind running somewhere, which most of the miner…
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n/a | gmaxwell | November 05, 2013, 06:37:20 PM | ||
Defending against Selfish pools with BFGMiner and GBT Pools
So you've seen the much hyped "Selfish miner" attack paper, and like a good Bitc…
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n/a | gmaxwell | November 05, 2013, 06:03:07 PM | ||
On client cultists Off-topic
You've drifted offtopic. All posts in a thread should be strictly related to the…
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n/a | gmaxwell | November 05, 2013, 06:10:18 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
You are surely aware that the organisation that controls (writes and maintains)…
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n/a | gmaxwell | November 05, 2013, 05:44:06 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
Which is fine so long as Bitcoin's central bank's clientHuh?
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n/a | gmaxwell | November 05, 2013, 05:38:14 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
Whatever though. Continue to get yourselves worked up about an erroneous result.…
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n/a | gmaxwell | November 05, 2013, 03:51:25 PM | ||
ECDSA encryption replacement Development & Technical Discussion
Well I hope you understand that 'part of the seed' leaves a lot of space for a p…
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n/a | gmaxwell | November 05, 2013, 03:07:56 PM | ||
ECDSA encryption replacement Development & Technical Discussion
piotr_n you were part of the thread where we reproduced our curve parameters,…
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n/a | gmaxwell | November 05, 2013, 02:30:43 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
Would I be right in thinking that this attack is made easier by Bitcoin's rather…
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n/a | gmaxwell | November 05, 2013, 01:54:56 PM | ||
For fun: the lowest block hash yet Development & Technical Discussion
2013-10-27 14:55:42 SetBestChain: new best=000000000000000000028c32e695273132674…
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n/a | gmaxwell | November 05, 2013, 01:39:41 PM | ||
Most difficult block vs cracking an Bitcoin addresses private key. Development & Technical Discussion
So block 125125 was a chance occurrence yes, but if mined today that 18 billion…
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n/a | gmaxwell | November 05, 2013, 01:38:39 PM | ||
[BRAINWALLET] NoBrainr - a hackproof cold wallet generator in 1024 bytes Development & Technical Discussion
A 90-bit passphrase, *IF* randomly generated (as this script is doing), has NEVE…
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n/a | gmaxwell | November 05, 2013, 01:29:44 PM | ||
Most difficult block vs cracking an Bitcoin addresses private key. Development & Technical Discussion
I think the highest difficulty block was block 125125, 18 billion or something.N…
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n/a | gmaxwell | November 05, 2013, 01:16:35 PM | ||
ECDSA encryption replacement Development & Technical Discussion
At least get the terminology right in your FUD: ECDSA is not encryption.
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n/a | gmaxwell | November 05, 2013, 01:13:21 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
3) Once difficulty falls, the lower difficulty is open to all.I believe thats mi…
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n/a | gmaxwell | November 05, 2013, 01:02:08 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
1) Make the nonce long enough that the extraNonce field is no longer needed in t…
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n/a | gmaxwell | November 05, 2013, 12:56:59 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
I think this assumption of theirs is the flaw.Sorry for confusing you there. Obv…
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n/a | gmaxwell | November 05, 2013, 01:38:19 AM | ||
Why did my wallet.dat's file size decrease after I encrypted it? Development & Technical Discussion
My wallet.dat's filesize was 70 KB.I encrypted it with bitcoin-qt.Then it was 53…
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n/a | gmaxwell | November 04, 2013, 10:15:59 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
I'm short on time, and this was announced to the public without advanced notice…
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n/a | gmaxwell | November 04, 2013, 02:11:37 AM | ||
How much slower is a big block propagating than a small block? Development & Technical Discussion
It takes longer to transmit more data, it takes longer to run more checksig oper…
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n/a | gmaxwell | November 04, 2013, 06:18:02 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
A miner in a traditional pool doesn't have the information needed to publish a b…
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n/a | gmaxwell | November 04, 2013, 02:02:35 PM | ||
Majority is not Enough: Bitcoin Mining is Vulnerable Development & Technical Discussion
Currently the first block that arrives is picked by miners so the "secretives" h…
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n/a | gmaxwell | November 04, 2013, 12:25:56 PM | ||
Enable OP-Codes & Scripting? Development & Technical Discussion
Can anyone provide the history as to why the disabled opcodes were disabled in t…
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n/a | gmaxwell | November 03, 2013, 02:27:56 PM | ||
Enable OP-Codes & Scripting? Development & Technical Discussion
But they seem pretty useless, anyway.alas, actually they're useful. With them yo…
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n/a | gmaxwell | November 03, 2013, 02:14:48 PM | ||
Help, bitcoin-QT sent small amount to a strange address. Bitcoin Technical Support
https://en.bitcoin.it/wiki/Change
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n/a | gmaxwell | November 03, 2013, 02:10:49 PM | ||
howto nlocktime Bitcoin Technical Support
Nlocktime is supported fine, replacement is not. But the OP's request doesn't ne…
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n/a | gmaxwell | November 02, 2013, 07:18:40 PM | ||
O(2^80) theoretical attack on P2SH Development & Technical Discussion
How is this easier than mining private keys that lead to public key hash (aka. a…
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n/a | gmaxwell | November 02, 2013, 12:12:36 PM | ||
It took 10 seconds for the brainwallet "password1" to be taken Bitcoin Discussion
What electrum does is not "12 random words" in the way that you'd produce them.…
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n/a | gmaxwell | November 02, 2013, 10:08:33 AM | ||
It keeps changing the "Estimated Confirmation Time" Bitcoin Technical Support
Might I suggest adding a public getrawtransaction equiv for blockchain.info? Yea…
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n/a | gmaxwell | November 01, 2013, 03:02:41 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
The problem with smart cards is that they don't have a calendar.No problem there…
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n/a | gmaxwell | October 31, 2013, 12:10:36 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
The problem with smart cards is that they don't have a calendar.No problem there…
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n/a | gmaxwell | October 31, 2013, 11:52:35 AM | ||
transaction is over the size limit? Bitcoin Technical Support
https://en.bitcoin.it/wiki/Transaction_fees
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n/a | gmaxwell | October 31, 2013, 12:05:34 AM | ||
Proof of Storage to make distributed resource consumption costly. Development & Technical Discussion
No, go review it again. Thats not whats being described here. The PRNG has to ha…
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n/a | gmaxwell | October 31, 2013, 12:03:40 AM | ||
Couple Bitcoin Questions Development & Technical Discussion
1)do miners process and verify transaction? what happens when all bitcoins are c…
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n/a | gmaxwell | October 30, 2013, 07:19:21 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
Taking the idea further— something which couldn't be done in the current otherco…
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n/a | gmaxwell | October 30, 2013, 05:57:06 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
And then you can pop it up later, after it has already left the factory...Seems…
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n/a | gmaxwell | October 30, 2013, 02:42:26 PM | ||
CoinSwap: Transaction graph disjoint trustless trading Development & Technical Discussion
Possible vector of attack: If Carol does not give Alice a newly generated public…
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n/a | gmaxwell | October 30, 2013, 02:32:02 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
Yeah. If you assume a trust in the authority that made the card, then you can as…
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n/a | gmaxwell | October 30, 2013, 02:29:38 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
I am thinking whether it would be possible to use such a card for offline transa…
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n/a | gmaxwell | October 30, 2013, 02:23:35 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
No trusted third party server – information is secured by each smartcard, there…
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n/a | gmaxwell | October 30, 2013, 02:03:11 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
What is the protocol to establish an authenticated and encrypted channel between…
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n/a | gmaxwell | October 30, 2013, 01:41:15 PM | ||
CoinJoin: Bitcoin privacy for the real world Development & Technical Discussion
I really like this idea. Simple and practical. It foils the most obvious attempt…
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n/a | gmaxwell | October 30, 2013, 12:30:47 PM | ||
CoinSwap: Transaction graph disjoint trustless trading Development & Technical Discussion
Motivation:Alice would like to pay Bob, but doesn't want the whole world (or eve…
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n/a | gmaxwell | October 30, 2013, 02:43:42 AM | ||
CoinSwap: Transaction graph disjoint trustless trading. Development & Technical Discussion
I guess the interesting thing about CoinSwap is that the participants do keep so…
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n/a | gmaxwell | October 30, 2013, 10:35:15 AM | ||
CoinJoin: Bitcoin privacy for the real world Development & Technical Discussion
I guess I wasn't getting that deep, sorry. Just pointing out that in coinjoin t…
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n/a | gmaxwell | October 30, 2013, 04:00:19 AM | ||
Idea for a mixer that can't run with your coins Development & Technical Discussion
I was thinking that the same can be accomplished by the protocol socrates1024 de…
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n/a | gmaxwell | October 29, 2013, 07:19:30 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
There is an alert mechanism already built into the system - basically, the walle…
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n/a | gmaxwell | October 29, 2013, 08:55:25 PM | ||
What I want in a coin control release. Development & Technical Discussion
But it also reduces the number of unspent txouts, which is good for the whole ne…
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n/a | gmaxwell | October 29, 2013, 08:52:26 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
Petertodd would probably recommend bonding the cards in some (or multiple ways).…
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n/a | gmaxwell | October 29, 2013, 07:07:28 PM | ||
Off-chain anonymous transactions by secure transfer of private keys Development & Technical Discussion
Quotetamper-proofPlease say tamper-resistant.Otherwise you are overselling the p…
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n/a | gmaxwell | October 29, 2013, 06:28:12 PM | ||
The use of Guy Fawkes Signature in case of ECDSA zero-day exploits Development & Technical Discussion
so dormancy is no protection for those early coins in the face of an attack on…
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n/a | gmaxwell | October 29, 2013, 06:05:35 PM | ||
The use of Guy Fawkes Signature in case of ECDSA zero-day exploits Development & Technical Discussion
Any G is as good as any other. Outside of curiosity and historic interest, no o…
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n/a | gmaxwell | October 29, 2013, 03:59:49 PM | ||
What I want in a coin control release. Development & Technical Discussion
I would also like these five additional features but they would have to be added…
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n/a | gmaxwell | October 29, 2013, 03:30:20 PM | ||
The use of Guy Fawkes Signature in case of ECDSA zero-day exploits Development & Technical Discussion
OK, thanks for explaining.But a super-majority is a relative term.What we are ta…
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n/a | gmaxwell | October 29, 2013, 01:40:27 PM | ||
The use of Guy Fawkes Signature in case of ECDSA zero-day exploits Development & Technical Discussion
But it will still cause a hard fork, if you try to spend it with a wrong signatu…
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n/a | gmaxwell | October 29, 2013, 01:00:09 PM | ||
The use of Guy Fawkes Signature in case of ECDSA zero-day exploits Development & Technical Discussion
Can you?Maybe I miss something, but there is no opcode to do RSA or DSA verify -…
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n/a | gmaxwell | October 29, 2013, 12:01:02 PM | ||
Best Mnemonic Generator Techniques Development & Technical Discussion
Without knowing the specific details of the mathematics of entropy, I kinda get…
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n/a | gmaxwell | October 29, 2013, 11:58:08 AM | ||
Idea for a mixer that can't run with your coins Development & Technical Discussion
Why can't you add a feature to bitcoin-qt to generate say 100 addresses and rand…
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n/a | gmaxwell | October 29, 2013, 02:30:33 AM | ||
Idea for a mixer that can't run with your coins Development & Technical Discussion
In further discussion retep realized that the Bob side could also be 2-of-2 in t…
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n/a | gmaxwell | October 29, 2013, 02:01:45 AM | ||
Idea for a mixer that can't run with your coins Development & Technical Discussion
I suggest calling this an "airgapped payment". The minimum things we need to t…
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n/a | gmaxwell | October 28, 2013, 09:12:15 PM | ||
Idea for a mixer that can't run with your coins Development & Technical Discussion
This cannot be implemented in the script today due to disabled op_codes.Can you…
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n/a | gmaxwell | October 28, 2013, 08:22:27 PM | ||
How to verify the ownership of Bitcoins? Development & Technical Discussion
Say, a person says he owns 100BTC in certain addresses / wallets. Is there a way…
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n/a | gmaxwell | October 28, 2013, 06:39:11 PM | ||
the bs "Satoshi:0.8.99" Development & Technical Discussion
Uh. NTP is pretty much completely insecure in practice. And if you have free con…
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n/a | gmaxwell | October 28, 2013, 03:13:05 PM | ||
Should we change the default to P2SH? Development & Technical Discussion
It also expands the size of the entire chain that must be stored forever. It's r…
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n/a | gmaxwell | October 28, 2013, 03:09:17 PM | ||
coin wallets getting confused about what time it is. Bitcoin Technical Support
This is just a classic "timezone wrong" issue, I would bet.It doesn't matter if…
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n/a | gmaxwell | October 28, 2013, 04:20:06 AM | ||
Suggestion: change the encoding for compressed private keys Development & Technical Discussion
The base58 encodings have a type parameter which specifies the data-type:chainpa…
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n/a | gmaxwell | October 28, 2013, 04:09:59 AM | ||
How to verify the ownership of Bitcoins? Development & Technical Discussion
IIRC it was gmaxwell? (or maybe I am just getting him confused with another hard…
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n/a | gmaxwell | October 28, 2013, 01:29:21 AM | ||
How to verify the ownership of Bitcoins? Development & Technical Discussion
As long as the signature includes the public key (or the public key is already i…
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n/a | gmaxwell | October 28, 2013, 12:57:21 AM | ||
Dust/Transaction too large, how to solve ? Development & Technical Discussion
Peter's script sends the dust to miners - I suspect most people simply want to c…
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n/a | gmaxwell | October 27, 2013, 10:58:33 PM | ||
the bs "Satoshi:0.8.99" Development & Technical Discussion
Whats a spying node?Are you suggesting that bitcoin nodes exist solely to watch…
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n/a | gmaxwell | October 27, 2013, 10:39:00 PM | ||
the bs "Satoshi:0.8.99" Development & Technical Discussion
FWIW, these are also the same nodes which have been triggering the incorrect tim…
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n/a | gmaxwell | October 27, 2013, 05:51:10 PM | ||
hardening brain-wallets with a useful blind proof of work Development & Technical Discussion
Is there a BIP or standard for brain-wallets? Would be interested to read...No.…
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n/a | gmaxwell | October 15, 2013, 06:11:40 PM |