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April 29, 2013, 08:33:38 PM |
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They are only calculating what percent hashing power gets what chance to do something nasty.
The real security though is, how impossibly is it for enough hashing power to exist that is attacking the chain rather than defending it for any given chance of causing harm?
For example, if pretty much any major miner could 51% your chain, it is not even really relevant whethr you are SHA256 or Scrypt, in either case you are screwed.
Whereas if it would take quite a few large miners all ganging up on you to 51% your chain, you are more secure.
So really the real security comes from what percent of the entire world's ability to hash that type of hashing if they chose to do so, not from whether it would be a little harder for them with less than 51% for one hash than with the other.
For random acts of mob mass lemming weird actions, the fact that any GPU anywhere could join an attack on you might make you less secure than if all the GPUs existing in the world all acting against you could not come near 51% of your hashing power.
-MarkM-
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