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1  Bitcoin / Mining speculation / Re: Say. If somebody built another small miner... on: January 15, 2021, 08:15:09 AM
I'm interested to know more. 
2  Alternate cryptocurrencies / Mining (Altcoins) / Re: SHA256 Mining Beta Test on: May 15, 2018, 07:41:21 PM
Ok, I'll bite.  I'll also commit a 4TH S7 to your beta test and will provide detailed and actionable bug reports to your devs.  I've been mining since 2010 and am thoroughly knowledgeable on both the software and hardware side.
3  Alternate cryptocurrencies / Mining (Altcoins) / Re: DIY FPGA Mining rig for any algorithm with fast ROI on: May 15, 2018, 03:30:33 AM
Hm.  They own Nallatech too.  I was unaware of that.  I always thought they were just the power connector guys.

4  Alternate cryptocurrencies / Mining (Altcoins) / Re: have bitmain come up with a PoW algorithm change resistant ASIC? on: April 26, 2018, 02:34:40 AM
If you believe the rumor that Bitmain's Sophon chip can be used to mine ethereum, then I think you have your answer.  They've had their AI products out for a while now and why not make a miner based on silicon you already taped out?
5  Economy / Digital goods / Re: [Give Away] 100USD Bitmain Coupons on: April 01, 2018, 05:14:53 AM

Much appreciated.
6  Economy / Computer hardware / Re: Bitfury v1.2 H-Cards on: March 13, 2018, 02:08:26 AM
Close.  Your board looks like a newer version of the same idea.  The one's I'm looking for looked like this:

They were sold here on the forums a number of years ago but it wasn't easy to get extra boards at the time after the initial kit arrived.

7  Economy / Computer hardware / Bitfury v1.2 H-Cards on: March 12, 2018, 07:18:39 AM
Does anyone in the U.S. have any original Bitfury v1.2 H-Cards they would be willing to donate or sell to me for like $5 a piece?  Looking for enough to populate an original M-Board (16) for my own personal hardware hacking amusement.

8  Bitcoin / Hardware / Re: Who likes pod miners? on: February 05, 2018, 06:19:32 PM
Love it.  Great work.
9  Bitcoin / Hardware / Re: Who likes pod miners? on: January 18, 2018, 10:21:42 PM
Any chance we can get physical dimensions for those of us who want to 3D print cases for these?  Thanks.
10  Bitcoin / Bitcoin Discussion / Re: Aug 30 to Sept 1: NewEgg Bitcoin Discount offers up to 30% off on Purchases on: September 02, 2014, 03:14:18 AM
Related chatter on Reddit:

11  Bitcoin / Bitcoin Discussion / Re: Aug 30 to Sept 1: NewEgg Bitcoin Discount offers up to 30% off on Purchases on: September 02, 2014, 02:42:42 AM
They absolutely should as they have a written offer to the public.  Basic US business law.

I guess we will wait and see.  Maybe there is more to the story.

12  Bitcoin / Bitcoin Discussion / Re: Aug 30 to Sept 1: NewEgg Bitcoin Discount offers up to 30% off on Purchases on: September 02, 2014, 02:31:24 AM
Well that was disappointing:

> Error The promo code BITCOINDEAL has been closed and is no longer active.

Except its 7:28PM PST and the offer was good until 11:59PM PST:

> Offers expire 09/01/2014 at 11:59 P.M. PT.

Aaaaand I just saw them take it off the home page.  So someone is working over there even though you can't get anyone on their "Premier Help" line.


13  Economy / Goods / Re: Now Open: Bit Beans Coffee Company! Coffee Beans for Bitcoin! Escrow provided. on: September 01, 2014, 10:52:05 PM
Bitbeans House Blend Review

My package of 2lbs of Bitbeans House Blend arrived a couple of days after I ordered.  The transaction was smooth and payment information was communicated on this forum and was covered by escrow. 

The coffee arrived in two unmarked shiny gray bags.  The bags were filled to the to top with barely enough room to squeeze to let some air escape.  Included in the package were some grinding instructions for different brewing methods (drip vs. french press).

Upon opening the first bag, I was greeted with the familiar aroma of delicious roasted coffee beans.  If I had to compare the aroma with beans available at the store, I would say they reminiscent of "Dunkin Donuts" original blend more so than say "Starbucks" original.  I ground my beans as instructed on a medium coarse burr grind for my drip coffee maker.

As the batch was dripping, my wife (an ex-barista) said that it smelled like a real coffee shop in the kitchen.  A good sign to be sure.  We poured our cups and fixed them as we normally do.

The flavor was rich and delicious.  The smoothness and balance of flavors were two predominant features of this blend.  It had low acidity and was not bitter at all.  Imagine if Dunkin Donuts made a Gourmet Blend that was only available in small batches.  That is the best way I can describe it using familiar comparisons.

The caffeine levels seemed to be a bit lower than other blends.  I wasn't wired after two mugs as I sometimes am.  This is a plus for me as I drink a lot of coffee and end up making custom fractional half-caffs often.

This a one smooth house blend.  The fact that this coffee is available for BTC is just another plus in its favor and not a gimmick.  It would stand on its own among gourmet beans from any shop.

14  Economy / Goods / Re: Now Open: Bit Beans Coffee Company! Coffee Beans for Bitcoin! Escrow provided. on: August 30, 2014, 07:57:11 PM
dentldir please send .05 btc to 1AvdKwLoxco253nDYAqyrSxLkGKxNr8CR3

I will send tracking information as soon as your order ships!

Payment received and confirmed! Will ship today! I will send a tracking number via private message as soon as I print your label.

Thanks for your business and please let us know what you think!

Item received yesterday as ordered.  I will try it this weekend and post a review.

15  Bitcoin / Development & Technical Discussion / Re: Rule 30 automaton as hash function on: July 29, 2014, 04:49:54 PM
I noticed that the rightmost bit in initial condition needs to be 1. If all the bits are zero on the right side of the initial condition then the hash values become nonrandom and with collisions for similar messages. The whole left side of the Rule 30 cellular automaton is nonrandom it seems.

This observation is a key part of the paper I linked on the first page.  You can use that non-randomness to reverse the "right adjacent" states effectively (i.e. taking 2^17 possibilities down to 32 or so).  After messing with it for some time, you can see the importance of the structure left in the CA diagrams as they iterate.  You ideally don't want any recognizable continuities.

One of the papers you linked (with the omega-flip network), overcomes this by alternating with a different rule and performing a permutation between subsequent runs.  That paper also links to the correct testing framework you'd want to use if you intend to go further.  (NIST's sts, apply the strict avalance criterion, etc.)

I'm a huge fan of CAs and Wolfram's work from the 80's but I was disappointed at the non-peer reviewed approach he took with NKS.  This is one area where his intuition is superseded by decades of rigorous work by cryptography experts.
16  Bitcoin / Development & Technical Discussion / Re: Rule 30 automaton as hash function on: July 17, 2014, 04:37:46 PM
A relevant cryptanalysis can be found in:

Analysis of Pseudo Random Sequences Generated by Cellular Automata
Willi Meier, Othmar Stdelbach

It doesn't cover every other center bit but does address the CA as a whole.
17  Economy / Computer hardware / Re: [WTT] EVGA 750 TI for SHA-256 gear on: July 17, 2014, 06:31:30 AM
How many GH/s were you thinking in trade?
18  Bitcoin / Development & Technical Discussion / Re: Av reports viruses in sst file on: April 12, 2014, 02:51:31 AM
For whatever its worth, I had Microsoft Security Essentials report a similar thing on my recently installed 0.9.1 on Windows x64.

Detected Item

Alert level

Category: Virus

Description: This program is dangerous and replicates by infecting other files.

Recommended action: Remove this software immediately.


Get more information about this item online.

19  Bitcoin / Legal / Re: Tax questions and speculation on: March 31, 2014, 06:38:35 AM
Assuming that Bitcoin is treated as a stock or a security, then wash sale rules would apply.  Though the guidance didn't specifically state that it is treated that way.

20  Bitcoin / Legal / Tax example for US miners using the new IRS ruling on: March 30, 2014, 05:16:24 AM
I'd like a few others to chime in on a hypothetical example which tries to apply the new IRS ruling for miners (or hashrate providers per se).

A miner buys a mining device for 5 BTC @ $100/BTC ($500 cost), the expected life of which is well under 1 year.

The mining device uses $100 in electricity over the year ($100 cost)

The device generates 2 BTC @ $200/BTC and 2 BTC $250/BTC over the year ($900 income)

The miner spends the 4 BTC in 4 transactions:

1 BTC @ $200/BTC
1 BTC @ $300/BTC
1 BTC @ $400/BTC
1 BTC @ $500/BTC

The total gross income is $900

The total cost of the income is $600 ($500 + $100 Electricity)

So the net income is $300.

For capital gains, the basis is:

2 BTC @ $200
2 BTC @ $250

and to consume those 4 BTC via FIFO:

1 BTC $200 from 1 BTC @ $200 => $0 Gain
1 BTC $300 from 1 BTC @ $200 => $100 Gain
1 BTC $400 from 1 BTC @ $250 => $150 Gain
1 BTC $500 from 1 BTC @ $250 => $250 Gain
4 BTC         from 4 BTC                 $500 Gain.

So the owed taxes are calculated from:

$300 taxed as income plus $500 taxed as capital gains (short term in this example).

Sound right?
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