Post
Topic
Board Pools
Re: [2000 GH] Eligius: Decntrlzd, ASIC-rdy, 0Fee CPPSRB, 0reg, BTC, 877 # support
by
Tia
on 03/05/2013, 03:56:09 UTC
https://en.bitcoin.it/wiki/Difficulty

Pools "often do" pdiff, but it seems bdiff is what bitcoin actually does internally. Wouldn't that make bdiff the defacto standard? Since pdiff ends up slightly higher, there's no harm done. Anything hitting the pdiff target also meets the bdiff target. But isn't bdiff the true standard?
There's two different standards, but bdiff only makes sense in the context of Bitcoin because of its floating-point block target.
Pdiff makes more sense for pools, miners, and blockchain-independent difficulty measurements, especially since it can be easily compressed down to a single byte (by counting the number of zero bits).
I am not fully comprehending the difference you suggest between a Pdiff of some number close to 1 (but technically under it) vs. 1 vs. bdiff  What difference does having Pdiff less than one vs. not? There must be some reason you'd want to do it that way, so out with it in layman's terms please.  Grin