Are Antminers E3 still OK with mining ETH? As I understood they are limited to around block height 1,400,000 which has already passed. Can some user of Antminer E3 confirm that the E3s are still mining ETH?

Is there any good option to rent mining rigs or hashing power to mine Monero if I don't have a mining rig?

Anybody used Cashila to pay bill in the UK? Is it supported?

If I may ask: what exactly is the point of withholding blocks? The one and only valid reason is simply to be evil. Because by withholding blocks you don't gain anything, you can't just use the block that you've withhold-ed. So I agree while this is theoretically possible I believe there are aren't any miners who would care to just spoof around, spend time on configuring and executing withholding and gaining nothing from it. As a matter of fact it's actually a bad thing for miners to do this since on the long term they would hurt rental services and would't be able to get the extra money that they are receiving by selling/leasing hashing power/rigs for higher price compared to direct mining. So, in my opinion this is a non-issue at all.

Anybody knows if there is some option to rent hashing power for mining CryptoNight algorithm based coins (such as Monero, etc.)?

Why are you still bothering with BetaRigs anyway ... move on to better systems (such as NiceHash.com, MRR...).

Yeah ... nicehash.com seems to be doing very well for more than a year now ...

I was following orders on NiceHash and one of 1 PH orders was canceled just after block was found ... so, yeah, this hash was obviously from NiceHash ... congrats to the winner!

Maybe you should consider even some other altcoins, if you are an active miner you can make better profit by spreading your coins portfolio to several altcoins. Nevertheless you should always have some percentage of Bitcoins besides altcoins in your coins portfolio.

Sure you can ... actually you should ... mining to NiceHash deposit address (given when you register) is not supported (only used for buying hashing power) ... just set you existing Bitcoin address as you username on miners.

Try NiceHash.com ... see the profit stats here: https://www.nicehash.com/index.jsp?p=stats (tab SHA256)

This is indeed an interesting project ... hopefully someone will make some scripts to enable profit switching between scrypt/sha256 in dependence of current profitability for services like NiceHash.com ... this would really be awesome (@Sfards: make sure to include extranonce.subscribe patch).

Go try www.NiceHash.com ... it's probably the easiest and most advanced rental system ...

Can anybody post what are the settings for "Chip Frequency" and "Chip Voltage" when running in ECO mode?

Furthermore, can "Chip Frequency" be modified at any interval? Is "Chip Frequency" directly related to "Chip Voltage", is there any table for all possible combinations of  "Chip Frequency" and "Chip Voltage" (combined)?

The point is that this miner will sit right next to a PC which is constantly powered on anyway (for other purposes). So how do I connect Avalon4.1 directly to a Linux PC? Do I only run cgminer wih some parameters and it will detect avalon4.1 miner automatically?

Hi,

Is it possible to connect Avalon 4.1 directly to PC (Linux) via USB (PC running cgminer with avalon 4.1 drivers only)? If yes, are there some instructions? Or does it absolutely needs dedicated controller?

I bet on +1.05 %

Sorry, now I understand that the setting in bitcoinqt under "Pay transaction fee" is per kB.

The issues with those transactions are that they are just a bit below 1 kB (one is 994 and one is 972 kB - they are finally confirmed now, after almost 3 days). So this is why bitcoinqt didn't add any fee. This is somehow annoying because if I understand correctly there is absolutely no way to add a transaction fee to a transaction that is smaller then 1 kB? There are several cases that I would want to do this, so why doesn't bitcoinqt let me do this?

Miners (pools) are now all setting their pools to only accept transactions with fees, this means that there will be lots of unconfirmed transactions for a long period of time - especially with lower prices of Bitcoin when the majority of pools and miners won't accept transactions without fees. Bitcoin is useless if I send a transaction and it takes 1 week to confirm it.

At lease what I would expect is to get another checbox with "Pay transaction fee for transactions, smaller then 1 kB".

Will this change in 0.10? I understand that the method of fee calculation will be change in bitcoinqt in version 0.10...

Bump. Can anyone confirm that this is a bug in bitcoinqt?

Hi,

I'm using bitcoinqt 0.9.3 windows and I have "0.00010000" under "Pay transaction fee". Yet still I see some transactions are sent without fees (and thus are taking extremely long to get confirmed). How is this possible? Is this a bug?

And another questions: do bitcoin transactions ever expire? If they have 0 confirmations in a particular time period?