Bitcoin Forum

Bitcoin => Development & Technical Discussion => Topic started by: yakuza699 on February 08, 2015, 10:21:56 AM



Title: Is it possible to..?
Post by: yakuza699 on February 08, 2015, 10:21:56 AM
Hi is it possible to know the hash of the block before it is even minted? What I mean is lets say that I set up my miners on ghash pool using cgminer(or other software) would I be able to know the hash of the block at least the right side of the hash? Also (I am pretty sure it's impossible but maybe there is some kind of a secret) is it possible to predict when a block will be minted?


Title: Re: Is it possible to..?
Post by: redsn0w on February 08, 2015, 10:22:51 AM
Hi is it possible to know the hash of the block before it is even minted? What I mean is lets say that I set up my miners on ghash pool using cgminer(or other software) would I be able to know the hash of the block at least the right side of the hash? Also (I am pretty sure it's impossible but maybe there is some kind of a secret) is it possible to predict when a block will be minted?

No, I don't think it is possible.


Title: Re: Is it possible to..?
Post by: hhanh00 on February 08, 2015, 10:45:30 AM
Well - you know to a certain extend because it has to be lower than the target difficulty. Therefore it has at least a certain number of 00 in front. Beyond that, no ... no one can tell.


Title: Re: Is it possible to..?
Post by: DannyHamilton on February 08, 2015, 01:45:03 PM
Hi is it possible to know the hash of the block before it is even minted? What I mean is lets say that I set up my miners on ghash pool using cgminer(or other software) would I be able to know the hash of the block at least the right side of the hash? Also (I am pretty sure it's impossible but maybe there is some kind of a secret) is it possible to predict when a block will be minted?

It is not possible to know the exact hash that will be found prior to it being found.  All you can know is that it will be less than the target value.

It is impossible to reliably predict exactly when a block will be solved.  Averaged across a large number of blocks, it will be approximately 10 minutes per block, but any one block could take less than a second, or more then an hour, or anywhere in between.


Title: Re: Is it possible to..?
Post by: yakuza699 on February 08, 2015, 02:33:12 PM
Well that was almost exactly what I expected. Thank you all(especially DannyHamilton)