Questions tagged [difficulty]

This tag should be used for questions regarding difficulty which encodes the likelihood of one hash to succeed at mining a block. Indirectly, it is a measure of the total hashing power of all miners for a given cryptocurrency.

17 questions with no upvoted or accepted answers
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Creating Mining Competition on regtest

As we know , Bitcoin core-Regtest is used to set up our own blockchain starting from Genesis Block. I have created Two nodes on my localhost running on different ports (I am using Windows 8.1). They ...
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1answer
2k views

Matching pushpool difficulty with stratum's

I have a new question for you. I have setup the stratum mining proxy, and all is working fine. (Actually found our first block recently!) However, I have pushpool running as well, and some of my ...
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0answers
36 views

Is there an up-to-date professional analysis of different “mining shield” technologies?

E.g. Digishield, Gravity Well etc. As a non-miner, I only hear bits and pieces about these algorithms. Is there a comprehensive resource with details on the history of these algorithsm and relative ...
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What is the formula for inferring hash rate from difficulty and block frequency?

Two parts to this question 1/ There have recently been concerns over drops in hash rate observed on sites such as blockchain.com. However, my understanding is that hash rate is inferred from the ...
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0answers
45 views

How difficult is it to confirm a Bitcoin Block?

If I have done the math right to come up with this hash, to confirm a true block and this is a confirmed hash. You can look it up here Bitcoin Block #570240 ...
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0answers
232 views

Estimated number of hashes

This is not a duplicate of previous, similar questions I've read on StackExchange, since none of those questions, nor the answers, go into the difficulty theory, as espoused on the Bitcoin Wiki. ...
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0answers
21 views

What needs to be done inorder to change difficulty?

I'm trying for a while to reduce difficulty of main network to do some experiments on transactions and maybe simulate some possible attacks.I came up to change nBits field in chainparams.cpp but it ...
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1answer
40 views

When update mining difficulty, Is the timespan of the past 2016 blocks approximated value?

I know how to calculate difficulty, and I know it is increased or decreased by checking the timespan of the past 2016 blocks. and I found actual code for calculating timespan: https://github.com/...
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0answers
140 views

How to calculate DGB-Groestl difficulties?

I'm new here. I want to know how mining difficulties are calculated, specifically for DGB-Groestl, which uses Myriad-Groestl algorithm. I might understand how to calculate the Bitcoin difficulties ...
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0answers
104 views

Is there a chart available for the historical relationship between Bitcoin price vs difficulty?

All I've seen is this, from 2011-would like something more updated, if available. Is there empirical data about a relationship between bitcoin price and difficulty?
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0answers
113 views

Are there multiple representations of the same target value? Are they interchangable?

The block target in Bitcoin is encoded in block headers as a 24 bit integer raised to an 8 bit exponent: int(nBits[1:4]) * 2 ** (8 * (int(nBits[0]) - 3)) Are there multiple nBits representations of ...
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1answer
152 views

Why mining pool has different connections ports for different difficulty

In the documentation of mining pool I found following Connect Details: (Difficulty 5 - GPU) stratum+tcp://stratum.btcprivate.org:3032 (Difficulty 10 - GPU Farm) stratum+tcp://stratum....
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18 views

Probability of hash yielding a valid block

I read today in a paper that for BTC every hash has a probability of yielding a valid block and that this is approximated by most of the time. Can someone explain to me how to come up with this ...
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3answers
46 views

How do we know that a certain hash below the target is even possible when mining?

If the target hash were artificially low, i.e. 3, how do miners know if there will ever be a nonce that produces such a hash?
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1answer
1k views

Probability of Finding a Block

I've been using cryptocurrency revenue calculators and have appeared to figure out that for all of the major algorithms, the probability of a hash being valid is 1/(D*2^u) where u is either 0, 13 (...
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1answer
181 views

Managing Diff variable on eloipool software

I'm trying to set up a pool of Bitcoin Mining. I use a software program eloipool. https://gitorious.org/bitcoin/eloipool I can not find the configuration file options to force a change of Diff. So ...
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1answer
218 views

why wont my hosted (shared) E-Wallet account show my bitcoin balance?

iv transferred 2 bitcoins in to deposit address with a hosted (shared) E-Wallet service. blockchain clearly shows its there but when im in the E-Wallet service its not showing. any know what the ...