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3321  Other / Meta / Re: Q FOR THEYMOS: Why tell mods to give special treatment to donators, VIPs? on: December 01, 2013, 07:52:48 AM
Personally, I give more leeway to names I recognize as experienced (except for those I recognize as experienced trouble-makers). The simple fact of the matter is that the prior probability of misconduct tends to be lower for experienced users, and so, comparatively, the chances that I'm the mistaken party is greater.

If people are frequently engaging in conduct where it matters where the benefit of doubt lands ... you have greater problems to worry about than a somewhat biased moderation policy.
3322  Bitcoin / Mining / Re: Should more of us switch to solo-mining instead of pool-mining? on: December 01, 2013, 04:56:00 AM
you should be able to merge mine all SHA256 based coins simultaneously at minimal additional cost.
No, you can only merge-mine coins which are designed to be merged mineable. Not all of them are.

You can also do this if you run P2Pool, FWIW— P2Pool pools your Bitcoin mining (but in a secure decentralized way) but also gives you the freedom to merge mine anything that can be merged mined. (You're a solo miner on the merged mined things).


3323  Bitcoin / Development & Technical Discussion / Re: Debian 7 + bitcoind from source + libdb5.1 = nope on: December 01, 2013, 12:51:56 AM
You cannot switch BDB versions on a wallet that wasn't cleanly shut down on the prior version, I'd guess thats whats happening here.
3324  Bitcoin / Development & Technical Discussion / Re: CoinSwap: Transaction graph disjoint trustless trading on: November 30, 2013, 07:41:41 PM
Oh, yeah...not even bob...sorry.
Time to re-read with new eyes. I guess my preferred use case blinded me.
Well even ignoring the non-even bob part, the classical across chain contracts are trivially traceable by everyone.
3325  Bitcoin / Development & Technical Discussion / Re: bitcoind 0.8.4 memory leak causing crash quite often on: November 30, 2013, 07:38:35 PM
This shows total VM used was 3.6 G which is huge. Why it could be using this much of memory? How I can reduce this? why this problem is showing up now?
3.6GBytes VM isn't huge for a process which uses mmap, note the res is just 777MBytes.

Can you run uname -a on that system as well as file /path/to/your/bitcoind  and show me the results?
3326  Bitcoin / Development & Technical Discussion / Re: CoinSwap: Transaction graph disjoint trustless trading on: November 30, 2013, 07:35:53 PM
but I'm not able to see what you gain with coinswap

Motivation:
Alice would like to pay Bob, but doesn't want the whole world (or even Bob) tracing her transactions.
3327  Bitcoin / Development & Technical Discussion / Re: Blocks are [not] full. What's the plan? on: November 30, 2013, 12:49:30 PM
concern of a "downward spiral of transaction fees"?
If blocksize isn't scarce at all why not include every transaction that pays at least 1e-8 BTC which you've already received and validated?  If it's purely orphaning that influences your decision why won't all your spending go to bandwidth (neutrino links to other miners and such Tongue ) and none to POW? etc.
3328  Bitcoin / Hardware / Re: Announcement: Bitmain launches AntMiner solution, 0.68 J/GH on chip on: November 30, 2013, 11:57:29 AM
I would at least appreciate some optimizations to the AntMiner port of cgminer, see below statistics of 2 Bitmain AntMiners running in a pool for 36 hours+:
Yea, its a real problem and personally the only negative thing I can say about the product. Unfortunately it's not just a cosmetic limitation... (Even noise, I mostly consider that a cosmetic limitation, at least for a >$1000 miner— we're not talking about a coffee warmer here Smiley) but fortunately it should be easy to fix.
3329  Bitcoin / Hardware / Re: Announcement: Bitmain launches AntMiner solution, 0.68 J/GH on chip on: November 30, 2013, 10:19:44 AM
NOISE: C-
Weird that you say that, I wrote glowing comments about the noise level about my single blade s1 in my yet-unpublished-review.
3330  Bitcoin / Project Development / Re: Project OtherCoin - off-chain payment system using tamperproof chips on: November 30, 2013, 08:29:35 AM
I hope there will be an easy way to use these cards with desktop and laptop computers and not just smartphones.  I'm eagerly awaiting this, it should be an interesting system.
3331  Bitcoin / Development & Technical Discussion / Re: Blocks are [not] full. What's the plan? on: November 30, 2013, 07:10:10 AM
Centralized systems requiring trust are
You are presenting a false choice. The choice is not "centralized systems" OR "everything in Bitcoin". There are many options to build non-centralized ways of settling payment on a decentralized Bitcoin— ilpirata79 linked to one such approach. A lack of care into the operating costs of Bitcoin nodes may result in Bitcoin itself becoming effectively centralized, which is an outcome which would make building a non-centeralized payment method on top of Bitcoin pointless or impossible.

3332  Bitcoin / Hardware / Re: I propose we merge custom hardware into mining hardware on: November 30, 2013, 03:45:56 AM
I think its fine as it is. If there was no need for non custom hardware talk, why are there still 100s of posts in there? We don't want non-custom in custom so why force them into here.
Go look in the regular hardware forum... most of what gets put there gets moved by mods into custom hardware, and most of what remains is arguably misplaced anyways.
3333  Bitcoin / Hardware / I propose we merge custom hardware into mining hardware on: November 30, 2013, 12:35:58 AM
I propose we merge custom hardware into mining hardware: All viable bitcoin mining hardware today is "custom" to some extent. I also propose we create a "mining hardware development" subforum to host the small amount of actual development discussion.

Thoughts?
3334  Bitcoin / Development & Technical Discussion / Re: How can I use Bitcoin as validation engine? on: November 30, 2013, 12:02:01 AM
There is a service that uses bitcoin blockchain to prove that certain data exists at a certain moment of time [link removed] . This is done by generating a  bitcoin transaction (unspendable) to two specially crafted addresses.
This is a very inefficient and destructive way to perform this tasks. I would not recommend using or promoting this service.
3335  Bitcoin / Bitcoin Technical Support / Re: Signed raw transaction goes through on blockchain, but not locally on: November 29, 2013, 11:56:29 PM
Not enough information to help. You may have added or lost some characters from it, but thats my best guess.
3336  Bitcoin / Development & Technical Discussion / Re: Blocks are [not] full. What's the plan? on: November 29, 2013, 10:36:11 PM
I think you will never be able to pay coffee with bitcoins, when (and if) people really start using it (which is what we want). Unless you are willing to pay very high fees.
I think you should be careful to distinguish Bitcoin the currency and Bitcoin the payment network when you speak because on this matter what you can "never" do is quite different depending on which you're speaking of— I know you know this but the language makes it unclear.
3337  Bitcoin / Development & Technical Discussion / Re: So How does Bitcoin Development Happen Anyway on: November 29, 2013, 10:09:52 PM
1. How does the bitcoin foundation get agreement from all the miners to implement their changes to bitcoin?
The Bitcoin Foundation plays no formal role in the development of Bitcoin. The foundation is a 501(c)(6) professional organization created fairly recently (last year) in order to help sponsor and promote Bitcoin.  If the foundation did have control over Bitcoin it would be very bad indeed, as they could be ordered to abuse that control. Fortunately, they do not. If you wanted you could start your own Bitcoin foundation.

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2. When this agreement happens, does the network have to shut down?
3. How quickly does it take to implement these "developer changes"
4. If an entity controls 51% of the network, do they get to be the "developer" ?
Bitcoin is, foremost, an autonomous zero trust system. Every Bitcoin node such as the reference client software (Bitcoin-QT), run by anyone who wants to,  independently validates that the messages they receive from the network conform to all the rules written in the software they trust no one. As such, "majority" is generally irrelevant in terms of the system's rules. They cannot be violated by just a simple majority of anything... though if some kind of super-majority of Bitcoin _users_ wanted to adopt different rules, they could: they would arguably be using another system though.

Unfortunately, there is no way to decide the ordering of events in a decentralized and purely autonomous manner, so Bitcoin uses a computational majority to order transactions via mining... Ordering is powerful but the inability to control more than ordering is believed to be part of the incentive balance that keeps mining mostly honest.

As of yet, we've (the Bitcoin community) never really changed the system in a way that wasn't backwards compatible with the earlier versions at least at the rules level— save one exception which was that versions prior to 0.8 would non-deterministically refuse to validate some blocks processing large numbers of transactions and fixing this bug was a not-completely-backwards-compatible change to the system rules.

It's possible to add new restrictions to the rules without breaking backwards compatibility (e.g. transactions not consistent with the new rules are just ordered infinitely far into the future) and this has been done a couple times to correct bugs and provide some new functionality. To make these changes safely it requires a decisive super-majority of mining to be enforcing the new restrictions. Fortunately the protocol itself can coordinate this by miners signaling with a bit in their blocks that they will start enforcing the rules when— say— 750 of the last 1000 blocks have the signal bit.

Anyone who wants to can develop Bitcoin software, and many people— advisably other otherwise— have.
3338  Bitcoin / Hardware / Re: Announcement: Bitmain launches AntMiner solution, 0.68 J/GH on chip on: November 29, 2013, 08:59:46 PM
Any chance of posting the source code for the firmware images on the devices?

The current firmware is based off an old copy of cgminer which has poor performance for large blocks or large coinbase transactions. As a result I'm seeing 100% cpu usage and a stale rate several times higher than my avalons.  This could easily be fixed by porting the driver to bfgminer or a current cgminer (or backporting some of the work generation improvements from newer cgminer), and I'm willing to give it a shot at doing it myself— but I need the source.
3339  Bitcoin / Development & Technical Discussion / Re: Blocks are [not] full. What's the plan? on: November 29, 2013, 08:35:35 PM
We wouldn't be having this problem if blocks that don't have at least a quarter of the transactions currently in the mempool would, like tx without fees, not propagate across the network.
Then someone starts maximum rate dust flooding transactions and people are forced to include them. Good job. Worse— they send floods of orthogonal transactions to different nodes on the network and now can freely trigger forking by effectively partitioning block propagation.
3340  Bitcoin / Development & Technical Discussion / Re: Why not Implement Improvements from some Altcoins into Bitcoin? on: November 29, 2013, 08:23:51 PM
I totally agree with the above.  This wait time for confirmations is killing me.
There is nothing in the protocol that can be changed to effect that substantially. Uncertainty and variability in time to irreversibility is inherent in an anonymous consensus system. Twiddling around parameters may change the distribution of values somewhat, but there will always be long confirmation times intermittently.

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How can we expect people to use bitcoins at the cash register if it's like this?
The same way they use credit cards— which are not irreversible for months, Bitcoin is irreversible very fast compared to credit cards.... or through any of several different ways to achieve instant irreversibility with some tradeoffs externally to the network.
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