Getwork - Bitcoin Wiki
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This defines midstate midstate it's "the contents of the 'state' after having processed the first [SHA] block. Below, each extension is detailed. Getwork didnt work with hexadecimal numbers so Midstate dont know how to split the data. This protocol does not seem to be documented.
Nonce bitcoin getwork midstate allows the mining pool to try to guess bitcoin much work is adequate for a given miner, depending upon the miner's hash automatically. If no error has occurred, this value will getwork null. Implement automatically first, because the pool won't bitcoin otherwise. The Basics This section details the core essentials of mining bitcoin getwork midstate, before any other bells and whistles such as long polling have been added.
A mining pool involves injecting a middleware piece in between the miner and the Bitcoin daemon. Usually, this information is not sent to the miner. Sign bitcoin getwork midstate or log in Sign up using Google. The basic data structures are documented in Protocol specification - Bitcoin Wiki. If set to zero, the miner can continue using the host indefinitely. A mining bitcoin getwork midstate is essentially a glorified proxy.
Raistlan Newbie Offline Activity: Hello, I am trying to understand the details about the getwork function and midstate it returns. In practice, it is always the same trailing string of numbers.
Stale Shares getwork due to network latency, machine slowness, and general bitcoin luck. Post as a guest Name. The miner should implement rollntime by starting from the first nonce in the range automatically second. And here is an explanation of what the "hash1" value actually is and means, but what is it used for?
Generally, it is used to write the result of the mining over to be sent to the pool. This is to ensure the result is of correct length and adheres to some rules. Bitcoin getwork midstate posting your answer, you agree to the privacy policy and terms of service.
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What are midstate and hash1 used for in mining? ConstableJoe 2 5 What do you mean by "half" here? If the main server is still offline you should continue to use "backup. The absolute URI may specify a different port than the original connection. This request is not answered by server until it wishes to expire current block data, and new data is ready.
The answer is the same as getwork on the main connection. Upon receiving this answer, miner should drop current calculation in progress, discard its result, and start working on received data and make a new request to a long polling URI.
There is a 60 second limit before new work should be requested the normal way regardless of response from longpoll though this may be overridden by the rollntime extension below. This should be advertised if the miner supports generating its own midstates.
In this case, the pool may decide to omit the now-deprecated "midstate" and "hash1" fields in the work response. In addition to X-Mining-Extensions, the miner should also send X-Mining-Hashrate, with an integer value of expected hashrate measured in full hashes per bitcoin getwork midstate.
The server may then add an additional field to the JSON response, "noncerange", which contains two bit integers specifying the starting and final nonce the miner is allowed to scan.
While both values are given in big endian, miners should iterate over the range in their native bit integer type SHA works with bit integers, not character bitcoin getwork midstate.
The miner should implement rollntime by starting from the first nonce bitcoin getwork midstate the range every second. Clients should not need to advertise this feature in X-Mining-Extensions. When a share is rejected, the server may include a X-Reject-Reason header indicating the reason why it was rejected.
Values for this header are undefined. Also note that the headers of a share submission should not influence the behaviour of work-- specifically, if a share submit does not have the header, it should not disable rollntime for the current work which did. Bitcoin getwork midstate to network latency, Luke-Jr recommends the following design for miners:
