In between two requests there could be a block pool causing not only your new block to be orphaned, protocol several blocks back in the bitcoin Stratum uses the least bandwidth of all the getwork. What Android apps can I use to monitor my workers? Anything can happen between two requests to bitcoind. Meaning do any of the mining pools.
Sister projects Essays Source. You're using an incompatible miner. Welcome to the Bitcoin Wiki,. Joe White 2 8. In Getwork, how does one calculate the value of Hash1? The most obvious cause is a high ping time to the server, which however shouldn't affect the stale rate by more than 0.
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Navigation menu Personal tools Create account Log in. Here's a getwork from the P2Pool instance I'm running: These are subsidies that people who support the idea of P2Pool send to miners. Diablo-D3 2 8. September 10,
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User interfaces SHOULD monitor for new, unsigned transactions with the 'proposal' flag set, and prompt the user to sign or delete them. Because numerous most transactions change confirmation at the same event, the only way to do this efficiently, is to monitor for new block events.
When a block arrives, increment the confirmation count of all transactions with at least 1 confirmation already. Wallet protocol From Bitcoin Wiki.
Retrieved from " https: Navigation menu Personal tools Create account Log in. Views Read View source View history. Sister projects Essays Source. This page was last modified on 20 August , at Then I realised the target is 'little-endian', meaning it's byte-by-byte backwards. I know P2Pool sets the difficulty to be higher, so that shares on the P2Pool sharechain will be found around every 10 seconds.
Currently to achieve that it's giving out work with difficulty I just checked, and it turns out I'm wrong. Here's a getwork from the P2Pool instance I'm running:. Notice the target is the same as on slush's pool. It represents a difficulty of 1. So the miner thinks it's looking for shares of difficulty 1, but P2Pool rejects any share the miner submits which has a difficulty of less than The precise target used for earning shares could be set to a larger number, but that would increase the number of getwork requests sent to the server as shares would be easier to find.
Note that if you decrease the size of target, you would reduce the probability of finding ANY valid shares for a given block header unless you allow changing the timestamp as well as the nonce.
As it stands, the expected number of shares found per getwork request is approximately 1 when the target has 32 leading zero bits. By posting your answer, you agree to the privacy policy and terms of service. Questions Tags Users Badges Unanswered. Bitcoin Stack Exchange is a question and answer site for Bitcoin crypto-currency enthusiasts. In order to prevent an attacker from working on a chain in secret and then releasing it, overriding the existing chain, chains are judged by how much work they have since a point in the past.
To ascertain that the work has been done since that point, nodes look at the Bitcoin blocks that the shares reference, establishing a provable timestamp. If a share points to a block, it was definitely made after that block was made. Payouts are weighted based on the amount of work each share took to solve, which is proportional to the p2pool difficulty at that time. The block reward currently A subsidy of 0.
A miner with the aim to harm others could withhold the block, thereby preventing anybody from getting paid. He can NOT redirect the payout to himself. In the event that a share qualifies as a block, this generation transaction is exposed to the Bitcoin network and takes effect, transferring each node its payout.
On P2Pool stales refer to shares which can't make it into the sharechain. Because the sharechain is 20 times faster than the Bitcoin chain many stales are common and expected. However, because the payout is PPLNS only your stale rate relative to other nodes is relevant; the absolute rate is not. There are two reported kinds of stales in P2Pool: Dead shares were too old by the time they arrived at your local P2Pool. Very high dead rates can indicate miner misconfiguration.
Orphan shares are shares which were not extended by the rest of the P2Pool network, because some other miner's share was accepted first. Very high orphan rates may indicate network connectivity problems.
The P2Pool console output shows your relative stale rate compared to other P2Pool miners in the 'Own efficiency' column:. When you first start P2Pool claimed efficiency will be low and the error bounds on this estimate will be large, but as it runs the numbers will converge to their correct values. If your efficiency is unusually low, make sure your network connection isn't overloaded, that your miners support long polling and are not set to work for excessive amounts of time, and that your bitcoind has multiple connections.
They shouldn't - It's normal for some fraction of everyone's shares to end up orphaned or dead. Because payouts are calculated by counting how many shares you have relative to others, everyone with normal configurations is equally "hurt" by this.
However, if you have a large proportion of stales, your payout will be hurt. You can see how well you're doing by looking at P2Pool's "Efficiency" ex: If you have a lot of dead shares or the "Local dead on arrival" number is higher than a few percent, that means that something is wrong with your miner.
Check to make sure that it is one of the working versions in the Miners section on this page. Lower the intensity or raise the FPS of your miner. If you have a lot of orphan shares, something is wrong with P2Pool's P2P connection.
Decrease the load on your internet connection or enable QoS Quality of Service on your router. Pay-Per-Last-N-Shares is a payout method that is completely resistant to pool hoppers.
Why am I not getting very many shares?! The P2Pool difficulty is hundreds of times higher than on other pools.