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701  Other / Meta / Re: [SCAM] Ongoing attempt - Phishing link send around in PM, copy of the forum on: July 11, 2013, 04:29:37 PM
I've adjusted the limits to make spamming more difficult.

Activity   Min. seconds between post actions   Max PM recipients   PMs per hour
036035
1674530
3060560
6030560
1001210120
2001015120
300820120

I don't suppose you can reduce the limits based on ignores?  I'd reduce the number of PMs per hour by the number of ignores the user has earned.  Of course, it would be less harsh to reduce their effective activity by the number of ignores.
702  Other / Meta / Re: Can bitcointalk.org get 2 factor authentication? on: July 11, 2013, 06:07:01 AM
Except that Google Auth has nothing to do with Google's servers and you don't even need an internet connection to use it.

Have a link for that?  I tried a bunch of searches looking for the technical details, but all I could find was ways to enable it on my gmail account and get SMS, so I assumed the worst.
703  Bitcoin / Bitcoin Discussion / Re: ASICS killing BTC ? on: July 11, 2013, 05:17:20 AM
Quote
If you can modify a simple desktop computer you can make it a more energy efficient bitcoin miner. Start with removing your mouse. ASICS are just for showing off.

Sarcasm or stupid?  I just don't know.

Just another scammer inflating their post count to circumvent the PM sending limits.
704  Bitcoin / Bitcoin Discussion / Re: 512-qubit Quantum Computer acquired, is bitcoin doomed? on: July 11, 2013, 05:16:01 AM
By now, there are so many threads on quantum computers that to have missed them all is simply impossible.  Just typing the word "quantum" into the search box gives 28 pages of results.

We need a time out corner.
705  Economy / Service Discussion / Re: Trouble withdrawing bitcoins via mtgox's api call on: July 11, 2013, 05:08:38 AM
Perhaps you should ask mtgox for support.
706  Other / Meta / Re: Can bitcointalk.org get 2 factor authentication? on: July 11, 2013, 05:05:19 AM
User using it should get an icon or something else that shows other users he/she 's using 2 FA.

Fuck this, and fuck google.

First, you don't ever leak security state information to attackers unless you really must.  Second, for a forum devoted to private money, there sure are a lot of people in this thread very eager to tell google their every move.
707  Bitcoin / Bitcoin Discussion / Re: Why is Bitcoin so popular in Oregon? on: July 10, 2013, 07:03:47 PM
I was looking for maps where Oregon is in the top ranking, to correlate with Bitcoin use. Besides Bigfoot sightings and breast feeding, I came up with two:

Is this fake?  I live in TN, and we certainly have no Income tax.

Read the text.  TN has an income tax on interest and dividends, not wages.
708  Bitcoin / Bitcoin Discussion / Re: Someone is spamming the blockchain on: July 10, 2013, 03:05:19 PM
No, the random number is a secret. You can't use it to store information. Revealing the random number will also reveal the private key. http://en.wikipedia.org/wiki/Elliptic_Curve_DSA#Signature_generation_algorithm

Huh - exactly how do you embed a "secret" number when ECDSA just does signing (it does not do encryption)?

EC math is magic.  Smiley

You don't really embed the secret number, you provide the product of the random number * G.  You may recognize that as the same operation that produces your public keys from your private keys.
709  Bitcoin / Bitcoin Discussion / Re: Someone is spamming the blockchain on: July 10, 2013, 12:13:21 PM
The messages are encoded in the time stamps.

Which would make sense, if the sender had some control over the timestamps.
710  Bitcoin / Development & Technical Discussion / Re: Handling hash drop off on: July 10, 2013, 11:48:23 AM
I know that you've been around long enough to know how to search.  Are you really going to make us list all of the reasons why this is a bad idea yet again?
711  Bitcoin / Development & Technical Discussion / Re: bitcoind RPC calls: get fee amount of received transaction on: July 09, 2013, 05:49:49 PM
Code:
bitcoind getrawtransaction 946a49aca6fad0cc95792d70fd189ff4f3ca2e113da89c7780a2c2e9a73df41d 1

Replace that txid with the txid you want to see.

Basically, you look up the transaction you want to see.  Loop through the vouts and add up the values.  Then, loop through the vins and do another lookup on each of them, add up those values.*  Subtract the second value from the first value, and you have the fee.

* When something is a vin here, it was a vout in a previous transaction.  You look up that previous transaction by txid using the same call as above, then just ignore everything except the vout that you need.
712  Bitcoin / Bitcoin Discussion / Re: new feature - bitcoin v.9 on: July 09, 2013, 12:39:15 PM
Use a web wallet. Problem solved.
Not for web wallet. With exponentially growing blockchain size, it will become a problem for them very soon.
Of course not: a web wallet would host only a *single* copy of the blockchain for all its users, not one for each of them.


Of course yes. They will need to double their storage every several month. Do not think that it will be for free.

I have visions of sysadmins frantically purchasing new drive after new drive to add to their servers, all sitting empty.

Hint: with the current block size limit, a 1 TB drive will die of old age long before it fills up in 2032 (at the soonest).
713  Bitcoin / Bitcoin Discussion / Re: Would you buy a on: July 08, 2013, 07:47:23 PM
Phone can get hacked, device can not.

The device you are talking about sure sounds hackable to me.

Also, biometrics are not useful here.  Or, at best, they are of very limited value.
714  Bitcoin / Bitcoin Discussion / Re: new feature - bitcoin v.9 on: July 08, 2013, 07:34:29 PM
I don't know much about namecoin, but could it be used for the certifications?

Probably.  You can embed a certificate fingerprint in namecoin's database.

The problem is the client.  There is a whole big chain of trust that needs to be managed between the client validating the certificates, and the authority for them.

Also, note that namecoin is going to be absolutely terrible at mapping namespaces to real world entities.  If there is a big real world entity that you know about, odds are very good that someone else owns most variations on that entity's name and trademarks.

And then there is typo squatting/phishing.  We end up in a situation where users must be very carefully compare the namecoin token to be sure they are fetching the right fingerprint.  This is a rather modest improvement over carefully comparing the fingerprint itself.

PKI sucks, and key management in particular.  Anyone else remember the late 90s, when encryption was reclassified from "munition, not for export" to not-munition?  Real security depends not only on good math, but also on good practices.  Perhaps someone in the NSA realized that we had no hope of developing good practices, so they decided to let us distract ourselves with good math.
715  Bitcoin / Mining software (miners) / Re: complete CD/USB/PXE bootable p2pool miner - p2pcoin on: July 08, 2013, 03:25:06 PM
Add magnet link pls?

I use old school command line torrent programs for this stuff.  They don't understand magnets.

But I'm not sure why you'd need a magnet anyway.  Are you having problems downloading the .torrent file?
716  Bitcoin / Mining software (miners) / Re: complete CD/USB/PXE bootable p2pool miner - p2pcoin on: July 08, 2013, 12:55:56 PM
0.6.4 has been released.  The initial post has been updated with a link to the torrent, and 2 seeders are already active.

It includes bitcoind 0.8.3 for lower latency, p2pool 13.0 for the new hardfork, and bfgminer 3.1.1 for better PGA/ASIC support.

I've been running mine with ASICMiner USB sticks since Friday, and it works great.
717  Bitcoin / Bitcoin Discussion / Re: new feature - bitcoin v.9 on: July 08, 2013, 12:04:44 PM
guys, you are off topic.

on topic: I'm surprised by the features. It is progress and the dev team certainly has a reason to go this way but to me it feels rushed after a rushed 0.8.2 that also got many people by surprise. I don't see why a CA should be used in Bitcoin. Is this a protocol extension? The return-address certainly is an extension but I don't see why this linking of transactions should be in the block-chain. A service could have an api to receive signed messages with return addresses for certain transactions (if you receive a transaction with id X, please send return to Y. Please confirm this signing with the key of address 1dice...). Will these payment requests be public? Will transactions reference these requests? Where can I read more details? Why not sign with keys? Where can I read what plans the devs have to integrate next?

Are these changes pull requests now? Are they well tested on the testnet?

All in all I would just want more and kind of earlier info. Everybody knows about pruning but this gets delayed over and over it seams while some surprise-features pop up with next releases.

*sigh*

You need some way to authenticate the payment blocks.  Despite their many, many flaws, the SSL CA system is still by far the best way we have to do that.  You can still use self-signed certificates if you want to.  Personally, I'm hoping that the growing public awareness of CA abuse will spur people to finally develop a better system.

No, this is not a protocol extension.  The payment system exists outside of the bitcoin network.

The information in the payment protocol (such as the return address) is not included in the block.

The payment protocol is the API for signed messages containing metadata about transactions.

The requests will only be public if one side or the other publishes them.

Pruning has not been delayed "over and over" in favor of trivialities.  There are prerequisites that needed to be followed.  The Ultra-prune branch in git, for example, didn't actually do pruning, it was a collection of work that needed to be done before pruning could be implemented.
718  Bitcoin / Development & Technical Discussion / Re: bitcoind RPC calls: get fee amount of received transaction on: July 08, 2013, 03:03:15 AM
I'm sure you could puzzle it out by using the raw transaction decoder.

But why would you do that?  Unless you are also the miner of the block that included that transaction, you don't care about the fee: It isn't yours.
719  Bitcoin / Development & Technical Discussion / Re: Blockchain corruption during power loss? on: July 08, 2013, 03:01:07 AM
Contrary to what KJJ claims— it is actually not supposed to do this

Heh.  I never said that it was supposed to happen.  I was just pointing out the workaround used all around the world by people with unreliable power.

Maybe we should make a sticky at the top for bug reporting best practices.
720  Bitcoin / Bitcoin Discussion / Re: How Bitcoin Centralizes Profit in the Hands of Miners on: July 05, 2013, 09:55:26 PM
Decentralized means "no one can stop you", not "everyone is doing it".
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