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81  Bitcoin / Hardware / Re: DragonMint 16TH/S halongmining.com on: December 26, 2017, 10:11:39 PM
If this was a total scam, wouldn't they pretend like they were readily available and try and scam as many people as fast as they could before anyone catches on and disappear with the money? Instead, they are not taking orders and waiting until they have finished a batch.

Scamming 101: Temper Your Greed.
If you accept unlimited orders for your non-existent product then people will immediately know for sure that you are a fraud. If you can keep up the facade then it gives scammers time to get away clean.

If its real the community needs definitive proof. Now.
If its a scam then more delay and then some announcement in March that there is more new pending "any day now" and they keep delaying.
82  Bitcoin / Hardware / Re: DragonMint 16TH/S halongmining.com on: December 26, 2017, 09:58:46 PM
If this is a scam, a lot of credible people in the community are involved in the scam. 

They could easily claim to have been tricked by the scammers. They could come out at the end of it all and claim they were duped or lost money in the scam like everyone else, genuine or not.
83  Bitcoin / Pools / Re: [150+ PH] SlushPool (slushpool.com); World's First Mining Pool on: December 26, 2017, 12:40:11 AM
Still new and learning here but I’m curious...

What would be in a block that takes a pool with 1.631 Eh/s, 6 or even 9 hours to complete? Some blocks go really quick while others seem to take forever... so is it the amount of work to be done? That the pool hasn’t found a new block to work on? A combination?

Just wondering.

Its called "Luck". Keep an eye on that number on your dashboard page.
Slush had terrible luck today. 2 blocks in about 16 hours.

Finding blocks is not a regular occurrence. Its a highly random process.
84  Bitcoin / Mining speculation / Re: Did difficulty just go up again? on: December 21, 2017, 06:20:58 PM
I seem to have much less btc being mined right now than I did at this time yesterday? Ive only just started this recently so Im not use to the changes yet. My Hash rate is still the same as always.

Difficulty adjustment and BCH price spike at kinda the same time.
Result is fewer blocks on BTC chain but huge spike in fees per block. About 10 BTC in fees per block these days.
85  Bitcoin / Mining speculation / Re: Difficulty changes on: December 21, 2017, 06:16:50 PM
I'm new to BTC mining and the recent difficulty shift has me perplexed.  It looks like they "over-corrected" as blocks are being found at 13.7 min per block (that's 37% slower than expected right?).  Is this what normally happens at the beginning of a difficulty shift?  It also looks like the network hash rate dropped significantly over the past few days as well.  Is that coincidental or part of what happens when difficulty goes up?  Sorry if this is the wrong place for these questions.

What happened is that BCH price spiked and it sucked some network hashrate over to that chain as miners switched to more profitable BCH pools. Seems like it evening out.

Not sure where you are getting your numbers. I see difficulty about right or maybe a little low.

https://fork.lol/blocks/time

A lot of stuff happens right around the difficulty adjustment so you gotta know whats going on.

86  Alternate cryptocurrencies / Mining (Altcoins) / Re: Bitcoin and Bitcoin Cash Difficulty same? on: December 21, 2017, 06:06:35 PM
One Simple Question, is the Bitcoin and Bitcoin Cash Difficulty the same? if No can someone please explain what makes them different from each other?


Not the same.  Difficulty is a control mechanism so that blocks are mined about once every 10 minutes. The networks have different hash rates therefore the difficulties are different.

Cash adjusts difficulty every block now so its highly variable. BTC is still on 2 week (2016 block) difficulty adjustment schedule.

https://fork.lol/pow/difficulty

[Edit: Fixed block difficulty period]
87  Bitcoin / Pools / Re: [150+ PH] SlushPool (slushpool.com); World's First Mining Pool on: December 04, 2017, 05:00:39 PM
In rewards screen
BlockId 31733   
Time 2017-12-03 05:44

Status is Invalid instead of Confirmed. Anyone know what went wrong?
88  Bitcoin / Mining support / Re: Port Forward Antminer s9 with TPLINK MR3420 on: November 22, 2017, 07:25:32 PM
Hi
Of course IP I gave is just numbers in my mind not real.
But has anyone setup port forwarding?


Yes, I have done port forwarding with Asus router. It works, then I switched to VPN.
I used TCP, not All. Try banman24 suggestion.

You can use telnet command to see if the port is open and listening.
89  Alternate cryptocurrencies / Mining (Altcoins) / Re: Mining profitability, BTC vs BCH on: November 14, 2017, 09:17:59 PM
Quote

btw I though you only get transaction fees for mining if you are solo mining ?


No! No! No! Some pools share transaction fees with miners! I know Slush and Kano do. The chinese Pools, not so much.

Transaction fees for BTC are about 30% of the reward right now. See https://fork.lol/reward/feepct

See https://bitcointicker.co/latestblocks/
Example: Reward is 12.5 BTC + 3 to 8 BTC fees. Fees make a HUGE difference.

BCH transaction fees are small.

Look at this list. kept by pool vs shared with miners.
https://en.bitcoin.it/wiki/Comparison_of_mining_pools

90  Alternate cryptocurrencies / Mining (Altcoins) / Re: Mining profitability, BTC vs BCH on: November 14, 2017, 09:00:48 PM

Thanks for that link. I've been watching it. I really like that it includes fees in the calculation.

BCH fork has DAA now so the difficulty and therefore profitability adjusts with every BCH block found.

ViaBTC and Antpool have auto-profit switching urls that redirect your hashrate between BTC and BCH but I can't make sense out of when they change coins so i've stopped using them for now.

Right now mining at nicehash for sanity. Pays BTC.

Everyone still adjusting to flipping. My person feeling is BCH drifts lower until chinese attack BTC again.
91  Bitcoin / Pools / Re: [50+PH] KanoPool kano.is 0.9% PPLNS US,DE,SG,JP,NL,NYA 🐈 on: November 11, 2017, 11:27:10 PM
How long does it take from the time I start mining at Kano to the time when I get full credit for my hashrate when a block is found? I have mined at Kano before but not long enough to give it a fair chance. I know there is some formula where N is 5 but can someone translate that to hours? If I start mining at noon then at what time would I be fully credited when a block is found? At other pools I know it takes an hour or two. Similar at Kano or longer or shorter?

(As a sidebar, I really think Kano might be a good pool to mine at since block transaction fees are high right now with all these high fee transactions in the mempool. And sharing transaction fees with miners seems the only sustainable model in the distant future when halving of block rewards means that sharing fees is the only way we miners are going to get paid. Care to comment on that view?)
92  Alternate cryptocurrencies / Mining (Altcoins) / Mining profitability, BTC vs BCH on: November 11, 2017, 11:01:24 PM
Not sure if this question belongs here but WTF, its gotta go somewhere.

Everyone knows about recent surge in BCH. WhatToMine site shows BCH profitability almost double BTC and network hashrate is almost at parity.

It seems obvious to mine BCH right this minute... but hold on. What about transaction fees? They are through the roof on BTC blocks!

So just thinking...

1. Could it be better for me, right now, to mine BTC at pool that shares fees with miners instead of BCH even though WhatToMine tells me otherwise?
2. Has anyone mined both BTC and BCH over the last 24 hours to have a real comparison?
3. How does WhatToMine site deal with transaction fees? Seems their coin profitability ranking might not be so good for our current scenario if it does not consider fee sharing?
93  Bitcoin / Mining support / Re: Where to get started with writing ASIC Code on: November 11, 2017, 05:11:50 PM
Does anyone have any knowledge, Or knows where to start with writing the machine language for ASIC's to be able mine. Essentially what i am looking to do is a DIY mini ant miner.

Any links, Or how-to's are appreciated.

At a high level, ASIC would be a hardware implementation of SHA-256 hashing algo. Someone please correct me if I am wrong.

Something like this? https://github.com/secworks/sha256 or this? http://async.org.uk/tech-reports/NCL-EECE-MSD-TR-2011-170.pdf

I just googled for it. I have no idea about the suitability of the links I just gave.

I have used this to try to understand the hashing algo.
https://www.movable-type.co.uk/scripts/sha256.html

94  Bitcoin / Mining speculation / 58coin.com on: November 08, 2017, 04:21:35 PM
Anyone know about this outfit? They just mined 4 out of the last 9 blocks. Wow.

Obviously Chinese but who are they and who is backing them?
95  Bitcoin / Mining support / Re: S9 error on: November 04, 2017, 05:33:46 PM
I have S9 with all 3 boards hashing.

My temperatures are a lot lower than yours (60 degrees vs 82). Are you running yours in a hot room? Can you turn it off for a while and let the machine cool down?

Here is end of my kernel log

Code:
do read temp on Chain[5]
Chain[5] Chip[62] TempTypeID=55 middle offset=30
Chain[5] Chip[62] local Temp=60
Chain[5] Chip[62] middle Temp=72
Special fix Chain[5] Chip[62] middle Temp = 75
Done read temp on Chain[5]
do read temp on Chain[6]
Chain[6] Chip[62] TempTypeID=55 middle offset=27
Chain[6] Chip[62] local Temp=54
Chain[6] Chip[62] middle Temp=65
Special fix Chain[6] Chip[62] middle Temp = 69
Done read temp on Chain[6]
do read temp on Chain[7]
Chain[7] Chip[62] TempTypeID=55 middle offset=29
Chain[7] Chip[62] local Temp=59
Chain[7] Chip[62] middle Temp=72
Special fix Chain[7] Chip[62] middle Temp = 74
Done read temp on Chain[7]
set FAN speed according to: temp_highest=60 temp_top1[PWM_T]=60 temp_top1[TEMP_POS_LOCAL]=60 temp_change=0 fix_fan_steps=0
FAN PWM: 70
96  Economy / Computer hardware / Re: Bladecenter H 2880W Breakout Boards. Selling from stock, limited time discount on: November 03, 2017, 03:29:52 PM
I would like a few of these. Please respond if anyone has in stock or knows where to order.
97  Economy / Service Discussion / Re: Any Cloud Mining management software on: October 31, 2017, 03:54:12 PM
I have a few friends interested in buying some hashrate from me and I'm looking for software to manage this

/sarcasm on

I know a great one called the Best Buddy Honor System. They send you bit coin and you point your mining pool to mine to their wallet.

/sarcasm off
98  Bitcoin / Mining software (miners) / Re: Yet Another Mining Monitor on: October 29, 2017, 10:42:56 PM
how does this work and can this work with a phone

It works by uploading Antminer statistics (hash and temperature values) to the cloud and then displays the values in a phone or browser. The cloud platform runs rules on the values so you can get alerted when the values are not within normal operating parameters.
99  Bitcoin / Mining software (miners) / Yet Another Mining Monitor on: October 28, 2017, 06:14:02 PM
There are many great commercial apps and open source efforts on these forums for monitoring your mining rigs. I am going to present yet another dashboard showing hash rate and temperature for your Antminer (or any miner that supports cgminer api) with mobile support and alerts (email and text).

It's a fun simple project for the DIY crowd that I put together on a slow Friday afternoon using a python script and an existing IOT platform called Cayenne.

First, a live demo. https://cayenne.mydevices.com/shared/59f4906081d3a96b067a9bb5/project/ce744209-17a3-494c-965a-1280d18488b2
Data is updated once a minute.

Source and readme are here: https://github.com/dfoderick/Mining

Important sections of the readme are pasted below.


Use uploadhash.py to upload hash rate and miner temps to mydevices.com Cayenne dashboard.
This will make the miner stats available on mobile device or web interface where you can get alerts when your miner is in trouble.

Requirements
============
 - Any computer that can run Python
 - A miner like the Antminer S9 that supports the cgminer api.

Steps
============
1. Make sure python is set up on your computer. If you have problems then make sure you install dependencies. Do a google search.
 - sudo apt-get install build-essential python-dev python-openssl
 - sudo python setup.py install

2. install mqtt lib. This is a client to communicate with mydevices.com Cayenne back end.
 - sudo pip install paho-mqtt

3. Create your dashboard by signing up at https://mydevices.com/ and following the prompts. If you have any issues with the mydevices.com or Cayenne setup then get help on their community forum. Add a device through their site to generate a user id, password id, and client id that you will use in step 5. This will allow you to authenticate to their back end.

4. Download https://github.com/ckolivas/cgminer/blob/master/api-example.py
Save it in any folder on your rpi and rename it minerapi.py
IMPORTANT! Make one small edit to the file. Comment out the following line by putting a # at the beginning of the line.
#response = json.loads(response)
The reason is that we want the raw json string coming from the miner as output, not the python object.

5. Put the file uploadhash.py in the same directory as minerapi.py and then customize with your settings.
Edit the script uploadhash.py with the following info:
 - ip address of your miner
 - mydevices.com Cayenne user, password, and client id from step 2. IMPORTANT! You get this info from the Cayenne dashboard. These values are different than your login and password on that site.
 - modify the polling interval if you so choose.
 
6. Now run the script, "python uploadhash.py". You can add the script as a cron task by using "crontab -e" and set it up to run @reboot. Google for instructions.
If the script is running correctly then you will see the diagnostics output on the console with your miner stats, hashrate and temp.  
user@raspberrypi:~/mydevices $ python uploadhash.py
13639.64 3 60 55 59
13622.19 3 60 55 60
13634.74 3 61 56 61
...

7. Check your Cayenne dashboard and configure your widgets. Don't forget to set up Cayenne Alerts from your dashboard to get notified when hashrate falls or temps rise.

[EDIT:] Clarified that Raspberry Pi is not required. Will run on any computer.
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