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If you do stick with PoW, sensible steps include:
- 1 - not championing CPU-only mining because Botnets
- 2 - not picking an algo that already has huge amounts of ASIC power dedicated to it, because that's the opposite extreme of 1 and equally likely to cause issues
- 3 - not manipulating the price of your coin because you'll make it a more tempting target
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Yeah, bitcoin was flying under the radar for a very long time, thus when this kind of attack happens, its hash-rate has become strong enough to "resist" the attack.
In addition to above comment, I suggest restricting exchange listing. Other words, don't use resource for the listing fee.
You need to fly under the radar as long as possible while building hash-rate to make the 51% attack very expensive.
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I was thinking maybe I have master nodes
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Just don't....