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201  Economy / Service Discussion / Re: Stay away from ASICSPACE on: May 12, 2015, 03:01:03 AM
Hopefully you can nego a settlement it is pretty clear ASICSPACE is at fault in this regard given all the retrofitting going on there to REDUCE heat. ASICSPACE should simply compensate you immediately and end this without anymore delays. That is what good businesses do.
202  Bitcoin / Hardware / Re: [GUIDE] B's A More Ethical & Trustworthy Miner Sellers Trustworthiness Guide on: May 12, 2015, 02:14:53 AM
I'm not a fan of ticket support - it's an easy way to be ignored. That's why crooks like GHash/CEX/BAN use it. A good support system is open & transparent.

Spondoolies has one.

They seem to use it well enough.

You need something more than Dogie shitting on every thread. At least they try.

I'm willing to give them the benefit of doubt, they do however have a lot of damage to repair - & if this ticket system doesn't work out right, I fear the worst for them with regards to yet more customer backlash on this forum.....

Let's hope they do it right.

Not easy work. That is why most fabricators want the benefits of selling to fewer customers and not to the general public as it is a cost savings and a hassle savings. It is not easy to build a CRM system including finding the right team. Having 2 or 3 or 10 customers versus 1000's is a no brainer really.
203  Bitcoin / Hardware / Re: [GUIDE] B's A More Ethical & Trustworthy Miner Sellers Trustworthiness Guide on: May 12, 2015, 01:32:51 AM
I'm not a fan of ticket support - it's an easy way to be ignored. That's why crooks like GHash/CEX/BAN use it. A good support system is open & transparent.

Spondoolies has one.

They seem to use it well enough.

You need something more than Dogie shitting on every thread. At least they try.
204  Other / Meta / Refashioning mining sections on: May 12, 2015, 01:15:17 AM
While were are taking about the repurposing of threads in HARDWARE...

CK can you move all the Antminer / Avalon SUPPORT threads to the MINING SUPPORT section?

Since we are talking about whole threads being not really about HARDWARE anymore.
205  Economy / Games and rounds / Re: SFARDS: “Speaking IMHO”- The Best Miner is…contest, 1 BTC for winner! on: May 11, 2015, 11:47:10 PM
Dogecoin:D9PJqG2jzAwE2LMVSd7ZD3HZXPFXoEJ8Zy
206  Economy / Games and rounds / Re: SFARDS: “Speaking IMHO”- The Best Miner is…contest, 1 BTC for winner! on: May 11, 2015, 08:45:45 AM
This is what we really need from SFARDS and others. But this would kill their own bottom line unless they know they can't compete then it would be very disruptive to all the other big fabs out there.

The only way to break the SFARDS future monopoly in mining would be for SFARDS to produce a chip that would be put into cheap sub $20 miners and bitcoin core node units that would be after market DIY add ons that could be attached to consumer products like a potable and washing hot water heating units these add ons also provide wifi for mining the node and control of the consumer product.

Coffee Miner and Bitcoin Core Node:


Hotwater Miner and Bitcoin Core Node:

Killing two birds with one stone both the core node issue and the distributed mining issue this would be the best solution to future development and distribution of Bitcoin / Altcoins (PoW).
207  Economy / Games and rounds / Re: SFARDS: “Speaking IMHO”- The Best Miner is…contest, 1 BTC for winner! on: May 11, 2015, 07:46:07 AM
I am a realist, so the most controversial design entry would be the following.  

Don't make the next miner to sell to the home users keep them for yourself or larger B2B customers who have over 1$ USD million to invest.

Create a massive farm, using the cheapest electricity in China somewhere in Inner Mongolia typically using 'abandoned' or 'decommissioned' coal fired plants that are fired up just for your farm, and then mine only for larger investors or your company until you ROI massively so you can afford the better smaller more efficient chip and miner you are planning next. Then you can sell those older units in about 2 months to lower level consumers and B2B clients with smaller orders AS IS! Oh and make it an 8 week pre-order for those small home miners and B2B anyone with less than 100K to spend on miners.

Then rinse and repeat that process until you have amassed a great fortune and pretty much sucked all the smaller miners money out of the market all the while increasing the hashrate faster and faster while keeping all the more efficient miners under your control during the process mining for yourself SFRADS.

 Grin

Size: Doesn't matter.
Power: Doesn't matter.
Price $$$: Whatever the market will bear. Someone will still buy up all your older units at cost.


====

Already liked you on Facebook. Wink


Doge: Release to SFARDS upon request.
Litecoin: Release to SFARDS upon request.
Bitcoin: Release to SFARDS upon request.
208  Economy / Service Discussion / Re: Great Sponsorship Opportunity For CryptoCurrency Exchange With PICISI on: May 11, 2015, 06:00:12 AM
Thanks I have passed along the information to our members in the Freicoin Alliance and we will discuss it.
209  Alternate cryptocurrencies / Altcoin Discussion / Re: List of POW altcoins with no premine, instamine and ninjamine on: May 11, 2015, 05:54:31 AM
Freicoin.
210  Bitcoin / Mining speculation / Re: Decentralization of mining is returning ... thoughts on 21 inc secret plans? on: May 11, 2015, 03:55:10 AM
Coffee warmer.
Hot water warmers built into water coolers.
USB miner with Bitcoin Core node.

Something that is cheap / zero cost as an addition to existing products. Also looking at integrating the Bitcoin Core into these devices might be a great opportunity to secure the network.

It has to be lower power, cheap and accessible / needed by millions.

But do you honestly think any of the big manufactures will do this? Justify even if it was a dollar per x item. I think until more acceptance its a pipedream.  

I would love it though really would.  Just don't expect it soon.

Who says a BIG fabricator is going to do this?

Again you have to think about the how you can build cheap accessible mining that is fully integrated into consumer products potentially or serves a real human need. It could be retrofits to existing consumer products. Hacktivist type stuff right?

Heating.

Cooking.

This has to be open source. It has to be local not international in scope.
211  Bitcoin / Mining speculation / Re: Decentralization of mining is returning ... thoughts on 21 inc secret plans? on: May 11, 2015, 03:49:29 AM
Coffee warmer.
Hot water warmers built into water coolers.
USB miner with Bitcoin Core node.

Something that is cheap / zero cost as an addition to existing products. Also looking at integrating the Bitcoin Core into these devices might be a great opportunity to secure the network.

It has to be lower power, cheap and accessible / needed by millions. The small or home miner needs to be MICRO and then P2Pool collectivized to push very very hard on the Farms to make them unprofitable. Cut their throats make it impossible to grow bigger.

1 or 2 chip miners with Bitcoin Core Node sub $20 units then you have something that could be viable. The only way to beat the farms is make mining so cheap that it is everywhere.
212  Economy / Service Discussion / Re: Great Sponsorship Opportunity For CryptoCurrency Exchange With PICISI on: May 10, 2015, 07:20:22 AM
I will ask our Freicoin Alliance to have a look and see if we want to also promote our work and favorite coin this way.

213  Bitcoin / Hardware / Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs on: May 10, 2015, 06:43:37 AM
Is it just me, or is this thread shrinking? Could've sworn I saw it at 646 and 645 pages. Now it's at 644.

it is

SPTech deleting posts?  That's odd...

MIght be mods. They've been deleting shit for no apparent reason in several places.

Maybe they're dumping posts from known spam accounts or something like that.

couple of mine were deleted. Humorous, nothing ugly or terribly off topic. Seemed random. In a self moderated thread, too. I'm dead certain the owner of the thread didn't do it, he was in on the jokes. And we're friends.

Besides, when has BCT EVER deleted spam or scams?

Overmoderation again. Especially in a SELF MODDED thread. Someone doesn't want STech thread bumped but they tend to ignore that in Bitmaintech or Avalon threads that predominate this section of the forum.
214  Alternate cryptocurrencies / Mining (Altcoins) / Re: Merged Mined Coins Association MeMiCA on: May 10, 2015, 02:32:51 AM
Likely  Freicoin will be merged in the future as that was/is the plan.
215  Bitcoin / Hardware / Re: [GUIDE] B's A More Ethical & Trustworthy Miner Sellers Trustworthiness Guide on: May 09, 2015, 07:09:35 PM
They ran out on the bill... they have done this before at least 2x maybe more. Watch Oregon Mines it will go poof just the same way.

jeez even with my puny income I could get 4,169 bucks together to wrap it up rather then be evicted...they must really be in debt or some such.

not familiar with them..just saying ..if legit the amount seems puny

Maybe it's not worth to pay the fee...
216  Bitcoin / Hardware / Re: [GUIDE] B's A More Ethical & Trustworthy Miner Sellers Trustworthiness Guide on: May 09, 2015, 06:10:15 PM
thanks for posting this information

You are welcome came from anonymous tipster. Thought it was important info for the community so posted it immediately as I read it in my Inbox.
217  Bitcoin / Mining / Re: Bitcoin mining - Princeton University online course on: May 09, 2015, 02:14:10 PM
You should send your notes to them if you haven't already.

I know they're trying to make it slightly more accessible, but I really wish that - especially when it's coming out of Princeton University - they would actually specify that reality is a bit more complex and they're giving slight simplifications.

I'm not a grump, so I'll also give some thumbs ups - and I'll happily also stand corrected myself Smiley

The task of Bitcoin miners
04:02 - watch lecture at t=4m02s
"And then you have to start searching over this nonce field to try to have the hash of the block header start with the required number of zeros."
The 'leading number of zeros' has often been used as a simplification.  Unfortunately this causes some confusion as some people wonder if that's the number of zeros you typically see on screen (in hexadecimal), or the number of bit-wise zeros, and leads to the incorrect impression that the number of zeros is all that matters; i.e. as a further simplification, are 0x0001 and 0x000F equal, given that they have the same number of leading zeros, if we're actually looking for a value below 0x000A?
As difficulty increases, the appropriateness of this simplification decreases.
http://bitcoin.stackexchange.com/a/8034

4:47 - watch lecture at t=4m47s
The lecturer states that there is a parameter in the coinbase transaction called extranonce.  Technically, this is not a parameter.  The coinbase transaction has a field that can contain arbitrary data, and some part of that has been usurped for the purposes otherwise described, and which was only later formalized.  Sort of.
http://bitcoin.stackexchange.com/questions/36455/determining-a-blocks-extranonce-value/36461#36461

4:47 - watch lecture at t=4m47s
This would also have been a good point to mention that any data change can be used to modify the input header, including e.g. the timestamp which has also been used for extending the range of hashable input without modifying included transactions.
https://mining.bitcoin.cz/user-manual/stratum-protocol#ntime

7:38 - watch lecture at t=7m38s
The lecturer states that the difficulty is adjusted every 2 weeks.  This is technically incorrect.  It is adjusted every 2016 blocks.  Those 2016 blocks should take 2 weeks, and the difficulty is adjusted in order to meet that goal.
It also states that it looks at the time taken for the last 2016 blocks.  This is also technically incorrect, but is less fundamentally incorrect - it's actually 2015 blocks, an off-by-one issue.  At least, I don't think that was ever modified Smiley
https://bitcointalk.org/index.php?topic=46498.msg555391#msg555391

8:48 - watch lecture at t=8m48s
The lecturer notes that "generally, more and more hash power comes online" and how this affects the difficulty.  As one of their slides had an August 2014 date on it, the lecture was authored before the first difficulty drop in a long time (December 2nd, 2014), but it would still have been good to mention the case of less hash power coming online, causing a drop in difficulty.
https://bitcointalk.org/index.php?topic=808145.msg9722662#msg9722662

8:48 - watch lecture at t=8m48s
SHA256(SHA256()) "For reasons that aren't completely specified"
Though I don't know the validity of the claim, it's mentioned at several sources that this is related to birthday attacks against SHA1; https://en.bitcoin.it/wiki/Hashcash#Double_Hash

Mining hardware
14:50 - watch lecture at t=14m50s
The lecturer notes that for a given CPU, it would take 134,461 years to find a block, and states further "if you're mining on a general purpose PC today [...] it's gonna take you that 140,000 years".  It should be noted that this is an average.  It could take many times longer, it could take a split second.
The same issue applies to 20:40 regarding GPU mining, 24:00 for FPGA mining.
The lecture does go into this at 51:08, but a quick note about it with a "we'll get back to that later" would have been good, as by then it's more than half an hour ago since these initial statements.

17:38 - watch lecture at t=17m38s
'Goodput' - I don't think I've heard that term used for Bitcoin mining - more for block relaying - but at least pointing out that you can trade off slightly higher errors against a higher performance was nice, even if they didn't go in-depth on that.
http://diyhpl.us/~bryan/papers2/bitcoin/wizards/2013-12-06.txt - IRC log with the use of 'goodput' by Bitcoin devs as referring to relaying blocks.
https://bitcointalk.org/index.php?topic=508851.msg5616659#msg5616659

22:15 - watch lecture at t=22m15s
This section would also have been good to mention some custom FPGA board work, as that's really where custom (not just using off-the-shelf computers/GPUs/FPGA dev boards in racks) Bitcoin mining rigs started.  Examples:
Icarus: https://bitcointalk.org/index.php?topic=51371.0 (most mining software and several devices still implement its comms protocol)
ModMiner: https://bitcointalk.org/index.php?topic=79637.0
X6500: https://bitcointalk.org/index.php?topic=40058
BFL Single: https://bitcointalk.org/index.php?topic=48863.0 (there's probably a better thread for this)

24:26 - watch lecture at t=24m26s
Not technically errors, but as of the date that these videos were posted, the examples given - CoinTerra's TerraMiner and BFL's Monarch - are very much outdated.  CoinTerra went out of business in January of 2015.
https://web.archive.org/web/20150202050534/http://cointerra.com/

25:09 - watch lecture at t=25m09s
Pointing out the time it takes for you to get a miner being an important factor.  Perhaps that makes the previous mentions more appropriate.  Perhaps it's also meta, given that the video itself is by the time of publishing based on quite old data.

26:40 - watch lecture at t=26m40s
"perhaps the fastest chip development ever!"
This is really something that you won't hear much about outside of technical conferences, but the design development behind Bitcoin ASICs is absolutely staggering.  There's a paper from two years back that also made that observation.  Outside of mobile development, this rapid development is generally unheard of.
I will make the side note that Bitcoin mining, unlike mobile processors/sensors/etc., is a relatively simple task so seeing that design development isn't surprising in terms of technology, but certainly is in terms of going from a non-existent market to one that is booming (or has boomed).
http://cseweb.ucsd.edu/~mbtaylor/papers/bitcoin_taylor_cases_2013.pdf - Bitcoin and The Age of Bespoke Silicon

28:08 - watch lecture at t=28m08s
Unlike the CPU/GPU/FPGA examples, here the lecturer correctly notes that - for the given ASIC miner - it would take 14 months on average to find a block.

29:35 - watch lecture at t=29m35s
Pointing out that most consumer miners probably lost money, that Bitcoin's rise in exchange rate may have saved them, but that they probably would have been better off if they had bought Bitcoin directly instead.
https://bitcointalk.org/index.php?topic=504530.msg5557195#msg5557195

32:32 - watch lecture at t=32m32s
The lead-in to the debate on small miners vs industrial miners and discussion on ASICs and how they fit into the Bitcoin ecosystem, and pointer to a future video on alternative mining work.  I suspect the questions raised here would be addressed in that video, but in terms of the original idea behind Bitcoin, Satoshi himself has said that this type of centralization is to be expected.
https://bitcointalk.org/index.php?topic=532.msg6306#msg6306

Energy consumption & ecology
42:44 - watch lecture at t=42m44s
These slides should have been reading Gh/s, rather than GHz.  The distinction is debatable, but because mining hardware has itself a clock frequency (Hz), this should not be conflated with how that translates into a hash rate (h/s)

45:28 - watch lecture at t=45m28s
"All payment systems require energy"
Although I'll add the side note here that some cryptocurrencies still manage to combine the task of securing the block chain with getting a secondary use out of the work performed (although realistically speaking it seems to be their primary use as these cryptocurrencies aren't widely used at this time).  This may be something they'll touch on in a future video.  Examples:
math: primecoin: https://bitcointalk.org/index.php?topic=251850.0
math: riecoin: https://bitcointalk.org/index.php?topic=446703.0
medicine: curecoin: https://bitcointalk.org/index.php?topic=603757.0
medicine: foldingcoin: https://bitcointalk.org/index.php?topic=781352.0
data storage: BURST: https://bitcointalk.org/index.php?topic=731923.0
data storage: storagecoin: https://bitcointalk.org/index.php?topic=486359.0

46:40 - watch lecture at t=46m40s
"Data furnaces".
This goes into the dual-use of the actual hardware for both mining, and heat generation.  This has popped up on these forums several times as well, usually tongue-in-cheek to refer to older hardware, but sometimes proffered as a more serious suggestion.
https://bitcointalk.org/index.php?topic=36429.0
https://bitcointalk.org/index.php?topic=988572.msg10768056#msg10768056

48:15 - watch lecture at t=48m15s
The lecturer makes the suggestion that network hashing power may go up/down seasonally if in fact miners were used as "Data furnaces".  Given the points made earlier about small miner vs industrial miners, and where they tend to put their mines, any such limited use would have negligible impact on the network hashing power.  It also ignores a global mining landscape.  This felt out of tone, tbh.

Mining pools
51:08 - watch lecture at t=51m08s
Slight redemption with regard to the time it takes to find a block, as the lecture dips its toe into variance; "Mining is a random process - you don't know when you're going to find your next block".  This is more a prelude into pooled mining, however, and doesn't go into details.
https://bitcointalk.org/index.php?topic=651450.msg7313828#msg7313828

53:56 - watch lecture at t=56m27s
This may also have been a good point to 1. explain the difficulty as it applies to the hardware level (quick check for golden nonce, if fixed difficulty), the pool level (check if valid share based on share difficulty), and the network level (check if valid hash based on block difficulty), and 2. why pools may vary the difficulty
https://en.bitcoin.it/wiki/Difficulty
https://en.bitcoin.it/wiki/Higher_difficulty_pooled_mining

56:27 - watch lecture at t=56m27s
In the lecture it is suggested that pool miners will send in all their shares after one of them finds a valid block.  This is generally incorrect.  Although in theory it could work as described - for the very reason the lecture does mention a bit earlier: shares can't be faked - in practice shares are sent all the time for various reasons (transparency, monitoring, etc.)
https://bitcointalk.org/index.php?topic=1976.msg30662#msg30662

57:27 - watch lecture at t=57m27s
PPS, PROP and '"Luke-jr" approach'... no PPLNS and explanation of why that came into existence.  Missed opportunity given the further description of the three that are listed.
https://bitcointalk.org/index.php?topic=985632

1:00:03 - watch lecture at t=1h00m03s
stratum, getwork, getblockshare?  I suspect they meant getblocktemplate
stratum: https://en.bitcoin.it/wiki/Stratum_mining_protocol
getwork: https://en.bitcoin.it/wiki/Getwork
getblocktemplate: https://en.bitcoin.it/wiki/Getblocktemplate
getblockshare: https://www.google.com/webhp?#q=%22getblockshare%22 (crickets)

Mining incentives and strategies
1:23:20 - watch lecture at t=1h23m20s
Transaction fees.  Only listed in green here because I was wondering why they hadn't been properly mentioned yet outside of the attack strategies section, as 'tips'.  This should really have been mentioned early on when discussing the reward for mining.
https://en.bitcoin.it/wiki/Transaction_fees

1:24:30 - watch lecture at t=1h24m30s
'Magic number': priority > 0.576 = no transaction fee.
The lecture suggests that this seems random and very arbitrary.  However, the 0.576 is written into the client as COIN * 144 / 250.  Plunking that into the very equation on the same slide (sum(input_value * input_age)/size_in_bytes) makes it seem a lot less random - albeit still somewhat arbitrary.
https://github.com/bitcoin/bitcoin/blob/f914f1a746d7f91951c1da262a4a749dd3ebfa71/src/txmempool.h#L18

general - and very much petty - feedback
As a commenter in the YouTube video mentions, there's a video editing issue about 40m25s in (slight arithmetic fluke which he later corrects).
Something that bothered me (ever so slightly) more is the lipsmacking.  This could easily be edited out of the audio.  This is probably a microphone dynamic gain issue and wouldn't be nearly as noticeable in person.

218  Bitcoin / Group buys / Re: OregonMines Group Buy $399 Colocated SP20s CC's Accepted on: May 09, 2015, 02:12:01 PM
Ya don't be listening to the haters. They were right.

Fucking shills. Suck it.

How are Asicspace looking as well there? Sheesh you can really pickem.

I really do not know what to say at this point.  When I first purchased a U3 miner in November I came here for help and information.  Since this is the only place that the manufactures use.  People here have helped me getting my U3's running, almost burnt my home down.  I had trouble with the S4 and the C1, I asked questions and people helped me.  

Now it seems that since I only have 62 posts it is okay to call me names, and insult me.  What I tried here was to take what everyone said was a scam and test them.

I have never recommend them to anyone. I did spend my money and get what I paid for that is all'

I have miners hosted with ASICSPACE, when people here were claiming it was a scam, I have had good luck with them

I have miners hosted with Lee in China I have had good luck with him.  I even purchased one from Philipma1957.

I have miners hosted with Oregonmines and I have gotten what I paid for.

I also keep miners at home, I spread my risks and since I am new to mining I am/was trying to contribute the greater good of Bitcoin.  The people on here seem more intent on tearing each other down and calling names than they do advancing the Bitcoin message.

If I would have known what I know now I would have purchased a user name, for sale on this board, with a large number of posts, I would not have given my real name or disclosed any personal information about myself.

I am positive no one with a high post count has EVER scammed anyone or acted as a shrill for a company.  You do not see paid  signature on my posts.


All of that being said, I am not recommending to anyone to buy any miners or hosting from anyone.  I would appreciate if you all refrained from calling me names.

Barbara

Don't listen to these haters Barbara.  I appreciate you contributing to the BTC community, and hope you will continue to do so in the future!  

-David
219  Bitcoin / Hardware / Re: [GUIDE] B's A More Ethical & Trustworthy Miner Sellers Trustworthiness Guide on: May 09, 2015, 01:59:52 PM
I was certainly fooled as well by Carson and Thurber I learned the hard way in May 2014 what sort of scams they had pulled and were pulling and one particularly involving chips from fabricators in China that was never reported here in these forums. Although you saw the same scam again by them with Black Arrow accusing them of stealing hundreds of thousands of dollars worth of miners. Amazing really.

There are plenty of people in these forums who were also screwed over by them thinking that they were legit and decent people. To his credit Gleb knew much much much earlier than most that Matthew Carson was a fraud and scam artist. One has to be very careful to comb through the behaviour of any number of accounts in these forums and unfortunately there are a significant number of  shady accounts compared that perpetuate scams and scam artists. The hardware threads have seen more than their fair share of those.
220  Bitcoin / Hardware / Re: [GUIDE] B's A More Ethical & Trustworthy Miner Sellers Trustworthiness Guide on: May 09, 2015, 01:08:59 PM
Minersource run by Matthew Carson and His father have been EVICTED.

Here is the eviction notice for MinerSource?

Why are they called Miner Hosting LLC?

Does Oregon Mines have any liability with regards to the money owed?

Saving Space

I am not to surprised sadly with this.  They took images I made for a guide for the SilverFish 28 (scrypt miner).   Was really fun asking them in person at a bitcoin conference how it happened.  They acted totally surprised... then admitted they might have gotten it off forum.   They did not take image down till they stopped selling the miner.

I don't like a lot of drama so I just let it be.  Guess karma happens sometimes.

I think when theft is involved criminals need to be given as much drama as possible. That way others won't be taken advantage of by them.
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