An other option would be to reduce the the reward every block,
so that it effectively halves every half year.
What do you think about that?
I'd vote for keeping it the same; no change.
The difficulty/reward curve is already negative, any devaluation will be short term at best and kill the coin at worst (i.e. removing any economic incentive to mine).
Regards,
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bsunau7
Maybe just have a gradual reduction per block to match the 2 year halving. This solves the abrupt halving issue, prevents market shock, and keeps true to original spec.
To increase demand, can try to get people interested in the science to purchase, supporting mining.
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