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[PULL] Sign and verify message with bitcoin address and public key Development & Technical Discussion
You're suggesting:ECDSA_SIGN(SHA256(RIPEMD160(SHA256(public_key))+"fixed string"…
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n/a | ByteCoin | May 03, 2011, 07:34:12 PM |
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Stopping an attacker who has >50% of the hashing power Development & Technical Discussion
Bitcoin has been running successfully for over two years. Honest miners have gen…
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n/a | ByteCoin | May 03, 2011, 06:03:12 PM |
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RFC: Bitcoin Mixnet Development & Technical Discussion
Thoughts (and patches ) are welcome.I'd like to mention that the following schem…
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n/a | ByteCoin | May 03, 2011, 03:21:45 PM |
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[PULL] Sign and verify message with bitcoin address and public key Development & Technical Discussion
My idea was this: if ECDSA turns out to have some kind of chosen-ciphertext [vul…
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n/a | ByteCoin | May 03, 2011, 03:12:24 PM |
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[PULL] Sign and verify message with bitcoin address and public key Development & Technical Discussion
QuoteHow about you prepend "This signed message is not intended to form a contra…
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n/a | ByteCoin | May 03, 2011, 01:17:12 PM |
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Refereed Transactions Development & Technical Discussion
If a script can access outside state then look at Theymos' example. You can make…
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n/a | ByteCoin | May 02, 2011, 08:22:46 PM |
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Refereed Transactions Development & Technical Discussion
Clients currently need to verify all transactions before they are relayed. Becau…
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n/a | ByteCoin | May 01, 2011, 06:16:53 PM |
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[If tx limit is removed] Disturbingly low future difficulty equilibrium Bitcoin Discussion
. You might be interested in my thoughts about this here.Spotting the non-intuit…
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n/a | ByteCoin | April 30, 2011, 06:57:40 PM |
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Refereed Transactions Development & Technical Discussion
Do you mean push the current block count onto the stack? That would be handy. Wh…
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n/a | ByteCoin | April 30, 2011, 08:27:28 PM |
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Refereed Transactions Development & Technical Discussion
I don't think there's any way to have a secure deadline within transactions.Thi…
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n/a | ByteCoin | April 30, 2011, 07:43:11 PM |
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Bitcoin clone with new block chain - what would happen? Bitcoin Discussion
Even if such an advantage is discovered, the first to market advantage is huge.E…
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n/a | ByteCoin | April 30, 2011, 05:18:45 PM |
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[If tx limit is removed] Disturbingly low future difficulty equilibrium Bitcoin Discussion
The problem is that whatever the mining substrate used, a single at-home miner c…
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n/a | ByteCoin | April 29, 2011, 07:56:54 PM |
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What will keep transaction fees up? Bitcoin Discussion
There will never be a problem with a cartel that has less than 50% of the genera…
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n/a | ByteCoin | April 29, 2011, 08:29:27 AM |
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Dark pools - how do they work? Bitcoin Discussion
Hey,I want to add dark pools to Britcoin. How do the dark pools on MtGox work? T…
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n/a | ByteCoin | April 29, 2011, 07:55:41 AM |
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[If tx limit is removed] Disturbingly low future difficulty equilibrium Bitcoin Discussion
That a "cartel" of miners who collectively do more than 50% of the mining can si…
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n/a | ByteCoin | April 29, 2011, 07:38:59 AM |
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[better]coin eats bitcoin Development & Technical Discussion
Your post got me thinking about how such a handover should be managed, hence my…
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n/a | ByteCoin | April 29, 2011, 06:04:07 AM |
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Vanity bitcoin addresses: a new way to keep your CPU busy Development & Technical Discussion
How long will it take to find an address matching : "^1Khalahan[A-Z0-9]" ? You n…
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n/a | ByteCoin | April 29, 2011, 05:47:32 AM |
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Managing substantial changes to Bitcoin - a QA network. Development & Technical Discussion
Will Bitcoin succeed forever without substantial changes?If the answer is is "Ye…
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n/a | ByteCoin | April 28, 2011, 08:54:56 PM |
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What are the best alternatives to SHA256 ? Development & Technical Discussion
Having big concentrations of specialized hardware makes it much harder to attack…
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n/a | ByteCoin | April 28, 2011, 09:34:29 AM |
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[PULL] Sign and verify message with bitcoin address and public key Development & Technical Discussion
By "idiosyncratic but standardized padding", do you mean just adding some chars…
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n/a | ByteCoin | April 26, 2011, 07:18:32 PM |
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Strange transactions? Bitcoin Discussion
The to address 13sUHUW8G23BLQEKFwVMf5cKUkiSuFK8XC seems to be occurring at a rat…
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n/a | ByteCoin | April 26, 2011, 06:48:15 PM |
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UX for bitcoin address field Development & Technical Discussion
I've seen many sites assume that Bitcoin addresses must be 33 or 34 characters l…
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n/a | ByteCoin | April 26, 2011, 06:25:33 PM |
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inheriting bitcoins Bitcoin Discussion
- nLockTime prevents miners from including the transaction in a block before the…
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n/a | ByteCoin | April 26, 2011, 06:17:29 PM |
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What would you change about the Bitcoin protocol? Development & Technical Discussion
I think realnowhereman's suggestions for improvement are excellent and comprehen…
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n/a | ByteCoin | April 26, 2011, 05:46:11 PM |
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OP_TIMESTAMP in script Development & Technical Discussion
I agree that there are too many problems, though I disagree that there isn't muc…
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n/a | ByteCoin | April 26, 2011, 12:03:41 PM |
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ECDSA Signatures allow recovery of the public key Development & Technical Discussion
ArtForz notes some possibly low-hanging fruit: we verify the same TX multiple ti…
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n/a | ByteCoin | April 26, 2011, 11:08:46 AM |
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Bitcoin and the NSA Bitcoin Discussion
They wouldn't have to break RIPEMD160. If they broke SHA256 suitably they could…
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n/a | ByteCoin | April 25, 2011, 06:31:55 PM |
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10 minutes target, double-spending and wasted work from forks Development & Technical Discussion
But what do you think about it? Does it make sense? Would it be feasible?I'm wil…
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n/a | ByteCoin | April 25, 2011, 07:47:34 PM |
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[PULL] Sign and verify message with bitcoin address and public key Development & Technical Discussion
if signmessage was changed to sign a hash of the passed-in message instead of th…
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n/a | ByteCoin | April 25, 2011, 07:01:50 PM |
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[PULL] Sign and verify message with bitcoin address and public key Development & Technical Discussion
Quote from: gavinandresenCan you start a forum thread about this? There was some…
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n/a | ByteCoin | April 25, 2011, 06:12:35 PM |
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ECDSA Signatures allow recovery of the public key Development & Technical Discussion
What's the extra CPU cost for recovering the public key? Current bottleneck for…
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n/a | ByteCoin | April 24, 2011, 07:14:56 PM |
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10 minutes target, double-spending and wasted work from forks Development & Technical Discussion
Somewhere in the forum I've read that 10 minutes is the time that will take for…
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n/a | ByteCoin | April 24, 2011, 06:42:17 PM |
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ECDSA Signatures allow recovery of the public key Development & Technical Discussion
... it is possible to recover the public key used in an ECDSA signature. ......…
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n/a | ByteCoin | April 24, 2011, 06:05:05 PM |
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OP_TIMESTAMP in script Development & Technical Discussion
Yes but he brings up a valid point (which you don't really answer in your respon…
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n/a | ByteCoin | April 24, 2011, 05:07:50 PM |
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Should bitcoin have a two-tiered transaction/verification system? Development & Technical Discussion
Fees make it faster.Fees don't make anything useful significantly faster. Fees m…
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n/a | ByteCoin | April 24, 2011, 04:32:39 PM |
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OP_TIMESTAMP in script Development & Technical Discussion
That's been rejected by Satoshi:I explain in the thread why I think Satoshi's ob…
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n/a | ByteCoin | April 24, 2011, 04:28:49 PM |
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Would this be useful? Development & Technical Discussion
My understanding is that Bitcoin uses ECDSA, which is only able to sign, not enc…
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n/a | ByteCoin | April 22, 2011, 05:42:54 PM |
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Would this be useful? Development & Technical Discussion
I'm assuming if the hash of the public key is good enough for addressing the tra…
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n/a | ByteCoin | April 22, 2011, 05:16:13 PM |
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[POLL 2/3] Bitcoin: URI refactor? Exponents (poll reset Apr 21 to clarify option Development & Technical Discussion
Optionally support specifying exponent: bitcoin:youraddress?amount=10.25 or bitc…
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n/a | ByteCoin | April 21, 2011, 05:46:10 PM |
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Merkle tree inside Block Headers for light client mode Development & Technical Discussion
The rapid transaction acceptance thing has been done to death, I feel. Most peop…
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n/a | ByteCoin | April 21, 2011, 02:01:36 PM |
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Merkle tree inside Block Headers for light client mode Development & Technical Discussion
...An independent, open source mobile wallet:...does not require any trust in th…
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n/a | ByteCoin | April 21, 2011, 01:30:42 PM |
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Would this be useful? Development & Technical Discussion
Clients interested in messaging can attach to the message stream looking for mes…
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n/a | ByteCoin | April 21, 2011, 05:56:10 AM |
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Desktop App needs "Add Bitcoins" Command Development & Technical Discussion
there's a similar proposal:http://bitcointalk.org/index.php?topic=5171Grue: I'm…
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n/a | ByteCoin | April 20, 2011, 09:13:59 PM |
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Merkle tree inside Block Headers for light client mode Development & Technical Discussion
1) Have the coins from the input transaction have already been accepted by the n…
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n/a | ByteCoin | April 20, 2011, 08:00:10 PM |
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CoinTumblr - any experience? [working again] Marketplace
Congratz, your service works. Now I stopped on my feet to find thee, who stole f…
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n/a | ByteCoin | April 20, 2011, 05:43:22 PM |
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Please help test: Bitcoin version 0.3.21 release candidate Bitcoin Discussion
This transaction requires a transaction fee of at least 0.0N because of its ...…
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n/a | ByteCoin | April 20, 2011, 04:50:01 PM |
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Bitcoin Transaction Volume Bitcoin Discussion
A better global metric of transaction volume would be the number of bitcoindays…
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n/a | ByteCoin | April 20, 2011, 03:28:41 PM |
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What happens if I mis type a bitcoin user's address when sending money? Bitcoin Discussion
It wouldn't be 'lost' we'd all know there were coins assigned to that address, i…
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n/a | ByteCoin | April 20, 2011, 01:40:42 PM |
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CoinTumblr - any experience? [working again] Marketplace
I'd just like to point out that there are ways of transferring coins completely…
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n/a | ByteCoin | April 20, 2011, 01:23:40 PM |
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ECDSA signature verification requires an unnecessary modular inversion Development & Technical Discussion
Using the notation in the ECDSA wikipedia article http://en.wikipedia.org/wiki/E…
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n/a | ByteCoin | April 20, 2011, 08:14:56 AM |
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Bitcoin’s Collusion Problem - by Timothy B Lee Bitcoin Discussion
There are two distinct issues being discussed here:The original article discusse…
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n/a | ByteCoin | April 19, 2011, 10:08:32 PM |
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Interesting pattern on bitcoinmonitor.com Development & Technical Discussion
Such people would be candidates for "shunning".http://bitcointalk.org/index.php?…
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n/a | ByteCoin | April 19, 2011, 09:37:52 PM |
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Merkle tree inside Block Headers for light client mode Development & Technical Discussion
I'm not sure that there would be any point to providing Merkle trees through a s…
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n/a | ByteCoin | April 19, 2011, 09:31:49 PM |
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Untraceable transactions which can contain a secure message are inevitable. Development & Technical Discussion
There is a problem with bitcoin because transactions are, to a certain extent, t…
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n/a | ByteCoin | April 16, 2011, 09:34:24 PM |
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[PATCH] bitcoin scratch-off cards Development & Technical Discussion
I have looked into this, and you do need the public key to break it. Correct. Th…
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n/a | ByteCoin | March 19, 2011, 09:06:41 AM |
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[PATCH] bitcoin scratch-off cards Development & Technical Discussion
It's not safe to have only 64 bits of the private key be unknown. This can be br…
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n/a | ByteCoin | March 17, 2011, 04:03:47 PM |
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[PATCH] bitcoin scratch-off cards Development & Technical Discussion
How long does it take to break an ECDSA key with only 64 bits of unknown key?As…
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n/a | ByteCoin | March 17, 2011, 10:54:59 AM |
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Order ID in a new transaction type? Development & Technical Discussion
Yeah... I can imagine clever ways of obfuscating it such that you can't tell who…
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n/a | ByteCoin | March 17, 2011, 09:42:44 AM |
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How do I know who paid me? Development & Technical Discussion
Thanks for the link to the wikipedia page in the other thread... so receiver CAN…
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n/a | ByteCoin | March 17, 2011, 05:54:29 AM |
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How do I know who paid me? Development & Technical Discussion
You can't send messages with transactions.You CAN encode a message in a currentl…
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n/a | ByteCoin | March 16, 2011, 07:23:44 PM |
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Order ID in a new transaction type? Development & Technical Discussion
So I got email today from a merchant asking the most-frequently-asked question:…
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n/a | ByteCoin | March 16, 2011, 06:57:25 PM |
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Suggestion: Introduce penalty for attempted double spend Development & Technical Discussion
As a sophistication of jav's scheme, and with reference to http://bitcointalk.or…
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n/a | ByteCoin | February 17, 2011, 02:07:56 AM |
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Best practice for fast transaction acceptance - how high is the risk? Bitcoin Discussion
Edit:I should acknowledge http://bitcointalk.org/index.php?topic=3168 where jav…
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n/a | ByteCoin | February 16, 2011, 09:00:32 PM |
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Best practice for fast transaction acceptance - how high is the risk? Bitcoin Discussion
When you start talking about "discouraging" blocks based on whether you think th…
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n/a | ByteCoin | February 15, 2011, 01:09:34 AM |
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Best practice for fast transaction acceptance - how high is the risk? Bitcoin Discussion
Scenario: You can't wait around for one or several confirmation blocks. Instead,…
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n/a | ByteCoin | February 13, 2011, 04:53:47 PM |
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what happening with lost bitcoins? Development & Technical Discussion
In the interests of accuracy I would like to point out that "lost" bitcoins can…
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n/a | ByteCoin | February 13, 2011, 04:37:09 PM |
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Optimal pool abuse strategy. Proofs and countermeasures Pools
Good catch to spot this pool exploit! I completely missed this in spite of think…
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n/a | ByteCoin | February 06, 2011, 08:30:40 PM |
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Public Key Infrastructure Bitcoin Discussion
What do you mean? Should I remind you that ECDSA doesn't support encryption?As…
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n/a | ByteCoin | February 04, 2011, 12:38:49 AM |
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secp256k1 Development & Technical Discussion |
n/a | ByteCoin | January 11, 2011, 10:03:21 PM |
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Can viruses steal people's bitcoin purses? What can be done for protection? Development & Technical Discussion
There is no effective solution to this problem until the wallet handling code ca…
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n/a | ByteCoin | January 09, 2011, 08:17:27 PM |
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secp256k1 Development & Technical Discussion |
n/a | ByteCoin | January 09, 2011, 08:08:37 PM |
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Emotional Arguments Bitcoin Discussion
In the NK-war, Chinese successfully on a wide scale were able to get American PO…
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n/a | ByteCoin | December 27, 2010, 03:52:26 PM |
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A couple of questions/comments Bitcoin Discussion
This is exactly safe? Has anyone checked?I can recast my solution in terms of EC…
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n/a | ByteCoin | December 23, 2010, 12:37:49 PM |
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How to transfer share holdings within the block chain (second attempt) Development & Technical Discussion
There are a variety of different ways of encoding information in a normal transa…
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n/a | ByteCoin | December 21, 2010, 10:34:55 AM |
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Feature request : signing a text with a wallet key Development & Technical Discussion
ECDSA doesn't support encryption.There are many elliptic curve encryption scheme…
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n/a | ByteCoin | December 20, 2010, 10:36:05 PM |
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Exploiting Special Properties of Bitcoin For Uses Other Than Currency Development & Technical Discussion
What alternative uses could exist that wouldn't detract from the primary functio…
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n/a | ByteCoin | December 15, 2010, 02:07:47 PM |
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Exploiting Special Properties of Bitcoin For Uses Other Than Currency Development & Technical Discussion
Right now gold can be mined and used as a currency. You can also use gold to ma…
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n/a | ByteCoin | December 15, 2010, 01:31:48 PM |
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Mining cartel attack Bitcoin Discussion
Gavin, I believe my simulation is accurate. I will post a longer explanation whe…
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n/a | ByteCoin | December 14, 2010, 01:46:33 PM |
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Mining cartel attack Bitcoin Discussion
There is something wrong with your simulation. Proof:Imagine a bitcoin world wi…
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n/a | ByteCoin | December 14, 2010, 11:03:23 AM |
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On bitcoin, and BitDNS Bitcoin Discussion
No template-based transaction rewriting please. It would hugely widen the attack…
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n/a | ByteCoin | December 14, 2010, 10:34:42 AM |
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Mining cartel attack Bitcoin Discussion
I did a simulation of two cartel strategies along the lines of my previous post.…
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n/a | ByteCoin | December 14, 2010, 10:05:52 AM |
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Mining cartel attack Bitcoin Discussion
The mining cartel problem is real. The basic implementation outlined by RHorning…
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n/a | ByteCoin | December 14, 2010, 08:23:56 AM |
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BitDNS and Generalizing Bitcoin Bitcoin Discussion
I thought of a possible problem with all these proposals: front-running by miner…
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n/a | ByteCoin | December 14, 2010, 07:53:19 AM |
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Bitcoin Block Explorer Bitcoin Discussion
Data sizes are now shown for transactions and blocks.Awesome, theymos! Thanks fo…
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n/a | ByteCoin | December 01, 2010, 06:44:12 AM |
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Block size limit automatic adjustment Development & Technical Discussion
To clarify, the block size limit is the size beyond which a received block will…
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n/a | ByteCoin | November 25, 2010, 09:13:48 PM |
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Who uses the GUI anyway ? Development & Technical Discussion
I agree.It would be nice to move to an architecture where bitcoind does all the…
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n/a | ByteCoin | November 25, 2010, 07:31:32 PM |
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Bitcoins sub-nets Development & Technical Discussion
I believe that it is possible to have a decentralized peer-to-peer crypto-curren…
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n/a | ByteCoin | November 25, 2010, 01:50:42 PM |
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Orphan blocks - how to reduce Development & Technical Discussion
Does every client have the same list of orphan blocks? Is everyone's blk0001.dat…
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n/a | ByteCoin | November 25, 2010, 02:10:03 AM |
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"Lost" Blocks? Development & Technical Discussion
Artforz data indicates that he sees 0.2% of his blocks "go missing". Our guess i…
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n/a | ByteCoin | November 19, 2010, 05:26:53 PM |
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Transaction / spam flood attack currently under way Development & Technical Discussion
The .06 in 17yhRAYKJvVmBh14HMxYRHp2Z4erWgk1ne which was MrBurns old spam eventua…
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n/a | ByteCoin | November 19, 2010, 02:54:04 PM |
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Recent floods by MrBurns (17yhRAYKJvVmBh14HMxYRHp2Z4erWgk1ne) Development & Technical Discussion
Without going all the way to a balance sheet setup, is it possible to use simple…
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n/a | ByteCoin | November 19, 2010, 01:04:22 AM |
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Recent floods by MrBurns (17yhRAYKJvVmBh14HMxYRHp2Z4erWgk1ne) Development & Technical Discussion
The above address has intermittently been flooding the real network with transfe…
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n/a | ByteCoin | November 19, 2010, 12:39:05 AM |
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Bitcoin safe box Bitcoin Discussion
Everyone can see the balance of any bitcoin address, this is by design.In the cu…
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n/a | ByteCoin | November 19, 2010, 12:16:58 AM |
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BitDNS and Generalizing Bitcoin Bitcoin Discussion
I've been thinking about your scheme appamato and as we discussed, rejecting inv…
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n/a | ByteCoin | November 18, 2010, 12:14:20 AM |
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Government vs Bitcoin ? Bitcoin Discussion
To be able to say, "No other transaction has spent these coins," you need to kno…
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n/a | ByteCoin | November 17, 2010, 10:52:16 PM |
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Decentralized Bitcoin scratch-off cards Development & Technical Discussion
I've just looked at Artforz scheme which is simpler than yours but my scheme is…
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n/a | ByteCoin | November 17, 2010, 10:24:51 PM |
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Need OP_BLOCKNUMBER to allow "time" limited transactions Development & Technical Discussion
Problems with OP_BLOCKNUMBER might happen accidentally, whereas exploiting segme…
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n/a | ByteCoin | November 17, 2010, 10:01:45 PM |
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Decentralized Bitcoin scratch-off cards Development & Technical Discussion
QuoteThe scratch-off bit protects the private key, most of which needs to be ent…
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n/a | ByteCoin | November 17, 2010, 09:32:28 PM |
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Need OP_BLOCKNUMBER to allow "time" limited transactions Development & Technical Discussion
We can't safely do OP_BLOCKNUMBER. In the event of a block chain reorg after a…
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n/a | ByteCoin | November 17, 2010, 09:16:15 PM |
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Are you able to tell when the chain temporarily forks? Bitcoin Discussion
Are there really so many hashes found that go to waste?The quote in the comment…
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n/a | ByteCoin | November 17, 2010, 07:57:28 PM |
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