Just my 2 cents :
- miners have RoHS, FCC and CE Logos -> AFAIK no mining product ever went through all (any?) of these certification processes, as they are expensive and consume way too much time in this fast-moving industry
( we all know time-to-market is literally everything )
- miners have one important specification missing -> onboard RAM (Scrypt requires large amounts of RAM as a core design feature, which is the reason they're still limited to CPU/GPU)
I give it a >98% chance of being a fraud.
(after all, there's a ton of eager customers who would like a power-efficient Scrypt ASIC as soon as possible -> lots of potential profit -> lots of potential fraud targets and fraud profit potential)
PS.
What are the odds of a supposedly completely new device with significantly updated components/features having apparently exactly the same shape & dimensions of a Block Erupter ?
Am I the only one looking at what 100% seems like "repainted Block Erupters" in the images ?
Topic: [ANN] Introduction to DualMiner USB (could mine both BTC and LTC) - page 39. (Read 114633 times)
January 19, 2014, 06:50:05 AM
January 19, 2014, 03:47:26 AM
Bruno, may I suggest that you reformat your original statement and remove references to his nationality. That would still drive home the point.
Understandably, when one member of an ethnic group fails to deliver or fails to satisfy (Avalon?) we tend to implicate everyone. That unfortunately happens when even a small percentage of a 1 billion population group does it.
There are at least 1 billion each of the following: Chinese, Indians, Catholics and other non-catholic Christians, Muslims; and I know all too well the stereotypes for each, but I'll not get into that. Not everyone is like that. A lot maybe, but not all.
I'll reserve the rest of my comments when I receive a sample unit, and I'll only talk about the unit.
Understandably, when one member of an ethnic group fails to deliver or fails to satisfy (Avalon?) we tend to implicate everyone. That unfortunately happens when even a small percentage of a 1 billion population group does it.
There are at least 1 billion each of the following: Chinese, Indians, Catholics and other non-catholic Christians, Muslims; and I know all too well the stereotypes for each, but I'll not get into that. Not everyone is like that. A lot maybe, but not all.
I'll reserve the rest of my comments when I receive a sample unit, and I'll only talk about the unit.
January 19, 2014, 03:36:16 AM
http://www.sec.gov/Archives/edgar/vprr/06/9999999997-06-009601
http://www.crunchbase.com/company/broadway-com
Jun Zhu is Qing Zhu: http://www.linkedin.com/pub/qing-zhu/8/307/737
My meds kicking in. But I'm trying to figure out why you're trying so hard to discredit them. They said they were going to send review units to some of the seniors, if they do that, would that not prove its real?
January 19, 2014, 03:25:07 AM
Thanks but seriously no one cares, your device is about $50 too expensive and really no one is going to buy it
How could you say no one cares? There seems to be plenty of caring. Or is trolling a habit? 
January 18, 2014, 10:29:04 PM
Here's my take: Jun Zhu is one lying, contriving, tiny Chinese dick cocksucker.
~Bruno Kucinskas
Make your arguments based on actual merit instead of race baiting and you'll be a lot more convincing.
+1 Agreed. Pretty sickening.
You're serious! Tell me you're not serious! How does one consider that "Jun Zhu is one lying, contriving, tiny Chinese dick cocksucker." is a racist comment via a racist asshole, of which I don't have one racist bone in my body? The terse statement was only meant to drive my point home. That is all!
Now, for all those who still believe that our Jun Zhu is not one of the same behind those two domain names I've mentioned because there are like 25 other Jun Zhus, consider the following, and please read very slowly, for that's how long it'll take me to pen my thoughts to text.
Don't like the restriction, but have to go through it. Just start by posting my 1st post.
Now, for dualminer:
https://bitcointalksearch.org/user/dualminer-161220
New to this forum. We will have a ASIC USB DualMiner (for both Bitcoin and Litecoin mining) coming to you soon.
But, the above is a moot issue, considering the following of which Jun Zhu provided a few posts back:
Bruno Kucinskas, Your digging in capability is impressive. Your logic of deduction (to reach your conclusion) is weak. Your language is uncivilized. But you did help us finding a web hosting problem of the website we haven't released to public yet. The www.mybitcoinrig.com was an old website, which supposes to be replaced by www.dualminer.com.
To everyone interested in our DualMiner USB product, the www.dualminer.com is still under constructing and testing for the coming product launching in US.
To everyone interested in our DualMiner USB product, the www.dualminer.com is still under constructing and testing for the coming product launching in US.
But, not moot in the sense that Jun Zhu came here and stated factually in his very first post as dualminer that he was new to this forum, hence the "lying tiny..." comment.
The same Jun Zhu, not some other, residing at 1485 Pine Grove Way, San Jose, CA, also owns the following entities:
http://www.linkedin.com/company/broadeng-inc-
Quote
About Broadeng Inc.
Broadeng Inc was established in 2010, with its focus on design, integration, manufacturing, and marketing of video conferencing terminal, HD video cameras, communication devices and embedded systems. Broadeng has its development teams located in Beijing,Changzhou and Silicon Valley (USA)
Broadeng Inc was established in 2010, with its focus on design, integration, manufacturing, and marketing of video conferencing terminal, HD video cameras, communication devices and embedded systems. Broadeng has its development teams located in Beijing,Changzhou and Silicon Valley (USA)
http://www.wysk.com/index/california/san-jose/er8xhwf/jnq-corporation/officers
Quote
Name: JUN ZHU Title: President Address: 1485 PINE GROVE WAY
SAN JOSE, CA 95129
SAN JOSE, CA 95129
http://www.sec.gov/Archives/edgar/vprr/06/9999999997-06-009601
http://www.crunchbase.com/company/broadway-com
Jun Zhu is Qing Zhu: http://www.linkedin.com/pub/qing-zhu/8/307/737
January 18, 2014, 10:26:11 PM
Just wanted to let everyone know, I have been invited to review the DualMiner. Will get back to the forum when the item is received.
Thanks
Thanks
Same here. I have been invited for a review and will post an update once I receive the actual unit
Cheers
January 18, 2014, 11:26:51 AM
ohhh, its " .5 GH/s BTC"
Checked their site on my phone & thought it said "5 GH/s BTC" coz they put .5 instead of 0.5
Personally I can't see how these would ROI, just more novelty toys for eBay
Checked their site on my phone & thought it said "5 GH/s BTC" coz they put .5 instead of 0.5
Personally I can't see how these would ROI, just more novelty toys for eBay
January 18, 2014, 10:46:38 AM
Here's my take: Jun Zhu is one lying, contriving, tiny Chinese dick cocksucker.
~Bruno Kucinskas
Make your arguments based on actual merit instead of race baiting and you'll be a lot more convincing.
And by the way, how do you know all these Jun Zhu's are the same guy, there's probably hundreds of thousands of guys with that name.
Agreed. Any hard evidence?
Linked In has 25 Jun Zhu's, 7 in United Kingdom, at least 4 academics of that name, and 1 in Wikipedia.
January 18, 2014, 10:38:07 AM
Here's my take: Jun Zhu is one lying, contriving, tiny Chinese dick cocksucker.
~Bruno Kucinskas
Make your arguments based on actual merit instead of race baiting and you'll be a lot more convincing.
+1 Agreed. Pretty sickening.
January 18, 2014, 09:31:30 AM
Here's my take: Jun Zhu is one lying, contriving, tiny Chinese dick cocksucker.
~Bruno Kucinskas
Make your arguments based on actual merit instead of race baiting and you'll be a lot more convincing.
And by the way, how do you know all these Jun Zhu's are the same guy, there's probably hundreds of thousands of guys with that name.
January 18, 2014, 08:47:53 AM
OK, didn't know that.
But that wouldn't still mean that if you use it for BTC mining you would have a part that lies dormant. Making it inefficient for BTC Mining?
The chip supposedly supports dualcoin mode, though I'd imagine someone still needs to develop a miner that is compatible with that. But that wouldn't still mean that if you use it for BTC mining you would have a part that lies dormant. Making it inefficient for BTC Mining?
January 18, 2014, 01:05:04 AM
Me too. I might get one. Can't wait to review it.
January 17, 2014, 10:31:14 PM
Just wanted to let everyone know, I have been invited to review the DualMiner. Will get back to the forum when the item is received.
Thanks
Thanks
I might also be receiving one. I will also give my view on the device.
January 17, 2014, 09:22:24 PM
I love this idea but 30 kh/s doesn't sound impressive.
January 17, 2014, 09:17:58 PM
Just wanted to let everyone know, I have been invited to review the DualMiner. Will get back to the forum when the item is received.
Thanks
Thanks
Look forward to your feedback
January 17, 2014, 09:02:39 PM
Just wanted to let everyone know, I have been invited to review the DualMiner. Will get back to the forum when the item is received.
Thanks
Thanks
January 17, 2014, 07:29:45 AM
(...)
But that wouldn't still mean that if you use it for BTC mining you would have a part that lies dormant. Making it inefficient for BTC Mining?
But that wouldn't still mean that if you use it for BTC mining you would have a part that lies dormant. Making it inefficient for BTC Mining?
If you focus on mining BTC *only*, then yes a part of your hardware (the scrypt logic) you paid development costs and production for, will never be used.
Like you buy a car for your dessert trip which can dive.
If you talk about the SHA256 unit itself, it's the other way around.
For BTC you can make use of the whole SHA256 unit, while for LTC/Scrypt you can only use a certain % of it due to memory requirements and additional logic.
Best approach seems to be making use of whatever is possible for Scrypt and use the remaining SHA256 unit for BTC.
Current software only supports Bitcoin and Litecoin mining.
As far as I know there's no difference, you get your work the same way and then you do your calculations the same way.So this statement confuses me a little, as the only thing you would need to change in order to mine, let's say NMC, is to change the pool providing the work, no?
If I'm missing something let me know, please.
January 17, 2014, 06:38:58 AM
very intristed...
January 17, 2014, 06:35:48 AM
OK, didn't know that.
But that wouldn't still mean that if you use it for BTC mining you would have a part that lies dormant. Making it inefficient for BTC Mining?
But that wouldn't still mean that if you use it for BTC mining you would have a part that lies dormant. Making it inefficient for BTC Mining?
January 17, 2014, 05:53:14 AM
As far as I understand, it is possible.
Have a look into litecoin's source code and you'll discover sha256 operations.
https://github.com/litecoin-project/litecoin/blob/master-0.8/src/scrypt.cpp
Scrypt is an 'extended' sha256 proof-of-work you could say.
So one could use the sha256-asic for both btc's and ltc's sha256 calculations, for scrypt you would just need some additional logic and memory.
Have a look into litecoin's source code and you'll discover sha256 operations.
https://github.com/litecoin-project/litecoin/blob/master-0.8/src/scrypt.cpp
Scrypt is an 'extended' sha256 proof-of-work you could say.
Quote from: https://alpha-t.net/wp-content/uploads/2013/11/Alpha-Technology-Scrypt-Analysis-on-FPGA-proof-of-concept.pdf
Scrypt has two parts. The first part, consisting of 1024 iterations of blockmix, produces 128kB (one megabit) of data, starting from a seed value.
Each blockmix produces 128 bytes, and the result is written to memory and also used as the in put to the next iteration of the blockmix
function. The result therefore is 1024x128 bytes, 128kB. The second set of 1024 iterations is used to reprocess some of the data. The second set of iterations occur in an unpredictable order:
the next block to be processed is determined from the result of processing the current block. The reprocessed block then overwrites its previous location.
Sandwiched around all this are two iterations of SHA-256, one used to generate the initial seed, the other used to generate a final hash value from the final state of the 128kB of working data.
Each blockmix produces 128 bytes, and the result is written to memory and also used as the in put to the next iteration of the blockmix
function. The result therefore is 1024x128 bytes, 128kB. The second set of 1024 iterations is used to reprocess some of the data. The second set of iterations occur in an unpredictable order:
the next block to be processed is determined from the result of processing the current block. The reprocessed block then overwrites its previous location.
Sandwiched around all this are two iterations of SHA-256, one used to generate the initial seed, the other used to generate a final hash value from the final state of the 128kB of working data.
So one could use the sha256-asic for both btc's and ltc's sha256 calculations, for scrypt you would just need some additional logic and memory.
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