Hi!

Why ethereum hash rate has gotten slower over time? I’m not talking about increasing difficulty but cards’ decreasing hashrate.

Hi!

I’m looking for cheap used gpu’s for ethereum mining and notised sales add about two used Gainward GTX 680 4GB cards. Has anyone experience with these in Ethereum mining?

They have 1536 Cuda cores, which is rather good I think. nVidias reference design is 2GB, but these are 4GB cards.

http://www.gainward.com/main/vgapro.php?id=868

https://www.geforce.com/hardware/desktop-gpus/geforce-gtx-680/specifications

Why Segwit adoption is so slow? Is it because of lack of wallet support? Are there incentives for wallet developers to implement Segwit?

If I've understood correctly, transaction's age does not affect any more its priority? So if two transactions have the same fee, which one is processed first?

 How will Lightning work in practise? I’ve read, that in practise Lightning network won’t work as a peer to peer network, but more like a hub network.

https://medium.com/@jonaldfyookball/mathematical-proof-that-the-lightning-network-cannot-be-a-decentralized-bitcoin-scaling-solution-1b8147650800

So we will have like payment card firms or “banks” which will offer lightning network payment card and apps in smart phones and we will pay with them in shops?

I don't see this as a bad thing, because this will explode bitcoins use.

I believe some will see this kind of centralisation as a bad thing, but I myself see Lightning-network as a great application, because it will bring bitcoin to the masses.
One thing to notice is, that Lightning-network is not _Bitcoin-blockchain_. It is implemented outside blockchain (only entry and exit points are attached to blockchain) and blockchain mining and transactions will continue as before. And if you don’t want to use Lighning, you can do all the transactions in blockchain as before

I believe that in few years from now you will have Lighning based BTC payment card and you can pay with it in brick and mortar shops.

I don't understand, why would someone cloudmine. I looked at nicehash prices

https://www.nicehash.com/buy

with 77 usd you can buy 0.05 PH for 24hrs.

According to profitability calculator, with that power you would get 60 dollars in 24 hrs. So you would pay 77 dollars to get 60 dollars. What am I missing?

https://blockchain.info/unconfirmed-transactions

With absolute maximum on 7 transactions per second and in practice less than 4, and new transmissions coming in 13/second, how can this backlog ever be processed?

What is the easiest way to start mining (I don't want cloud mining)?

I have basic computer skills. Not any fancy stuff. I don't have programming skills (except BASIC 30 years ago   ). I have once installed Linux (I don't have linux machine atm), but don't have any experience with Linux.

I would like to try basic ETH mining just as a hobby. I don't have any get rich fast -expectations with it. Jus a hobby.

I think I could buy a used PC and used GPU for this. Is it best to install Ubuntu and mine with that? Or Windows?

I tried this https://github.com/ethereum/go-ethereum/releases

with my Windows 10 PC, but somehow it always stopped after few minutes to "unable to dowload blockchain, no dowlonad source available" after first dowloading blocks for few minutes without problems.

Is there? I don't want some alpha version, which crashes and loses my coins, but I don't want to store my Ether on some exchanges online vallet either.

So is there some realiable desktop wallet?

https://github.com/bitcoinclassic/bitcoinclassic/releases/tag/v0.11.2.cl1

Is it allowed to discuss about Bitcoin classic here?

If I buy the most efficient hardware at the moment, which is Antminer S7 and start mining with it today, I calculated, that I get 622 euros total before block reward halving. After block reward halving, mining with that is not profitable.

I used electricity price 0.07 eurocents/Kwh (actually I pay a little more, but I took into account using waste heat to warming) difficulty increase 6.18 % every two weeks (6.18 is the average increase taken from here https://bitcoinwisdom.com/bitcoin/difficulty  )

Calculation is also based on my current earnings from S5 and based on the fact that S7 is 4.1 times faster and of course consumes more electricity

Did i miss something, or is it impossible to get positive ROI, if electricity is 0.07 euro cents/kWh, difficulty increases 6.18 every two weeks and you buy new Antminer S7 now?

Here is my calculation

http://1drv.ms/1S7eWJE

Yesterday I realized, that I'm actually not running Bitcoin Core as I thought. I previously thought that I'm helping bitcoin network by validationg blocks etc, but yesterday I realised, that I don't have any connections in. So if i've understood correctly there was no benefit for network at all from my node.

I noticed it from this

https://bitnodes.21.co/

So, please check that you are connected  

If you are not, you have to open port 8333.

In the Columbiabasinmining-thread I asked the following question, and my post was deleted

What is this?

https://docs.google.com/document/d/1qhIHhdorzq3-Yz8n0KHyhBN5Y-4i6-2GOv9UzlYmDGA/mobilebasic

How are you selling cloud mining,  if you don't have any miners yet?

That Googledocs was open when I posted my question, but it is now private. As I guessed something like this would happen, I took a couple of screenshots.

I post them after a while.

Hi

I Have Antminer S5 at home. When I'm in home network I can contact it without problems. But when I try same IP 192.168.1.36 outside home network, I get "address unreachable" error.

How can I fix this?

Hi!

I have some space at my home for some miners. I could host some miners for 10 euro cents /kWh. I would not collect any additional fees. Of course you would pay for sending your equipment (miner + PSU) to me and back to you.

Price would be based on miner's nominal consumption, corrected with PSU's efficiency.

Price for e.g. Antminer S7 with PSU with 92% efficiency would be 1293W/0.92 = 1405W x 24h x 10c/Kwh = 3.37 €/day.

If you are interested we could work out some escrow deal as I understand sending your equipment to a stranger is a problem. Of course I can't offer full value escrow deposit without some time limit to many people, as it would lock a lot of my money.

I live in Finland.

With online trading there is always a scam risk for both seller and buyer. Even with using escrow you can get scammed by escrow provider. What about using Paypal?

With Paypal seller can send online invoice

https://www.paypal.com/us/webapps/mpp/email-invoice

If I understand PayPal's fees correctly, accepting payment  in international sales, when seller is in U.S. costs 3.9% + Fixed Fee** (e.g. €0.35 EUR in euro payments). International sales in eurozone cost 3.4% + €0.35 EUR.

Of course this is a bit pricey, but Paypal has protection for both seller and buyer

https://www.paypal.com/webapps/mpp/paypal-safety-and-security

and  for buyer Refunded Returns service

Disclaimer: I have not sold anything via PayPal and I don't work for PayPal

If I would buy or sell something, I would suggest splitting the PayPal fee.

I think it is better to pay 3.9% or less to PayPal than get scammed.

16 nm is the current state of the art technology.  Next step is 10 nm, but at least Intel won't ship it before second half of 2017, so I guess we are going to live at least till that with 16nm. Moore's law is apparently slowing.

So what does this mean for bitcoin mining? Cost of electricity is even more important,  since you can't offset it with faster hardware?

Why people use exchanges' online valets? There have been several thefts on those. Why use them? I prefer local valet on my computer. I personally use MultibitHD.

https://blockchain.info/stats shows that during last 24hrs Total Miners Revenue is $1,888,197 and there where 198618 transactions.

So Mining cost $9.51 per transaction! Of course I undestant, that majority of mining revenus is coming from blockchain reward, not from transaction fees. But to my opinion this tells that mining revenue is high/transaction.