I think datacoin should not reward only the computation power of miner, but the fact of storing the blockchain too.
Hashpower is important to secure the network, but datacoin is about storage, so the one who store the blockchain should get a cut.
Right now, the guy who mine a block get the block reward + all the fee.
Instead of going to the miner, the fee should be spread between all the blockchains.
Mining recquire to store the blockchain too, but the fee shouldn't reward pure hashpower, but storaging.
I would go even further :
I think the reward per block (currently ~10DTC) should be spread too, not only the fees. Like a 50/50 split, 5dtc to the miner and 5 dtc to blockchains
To not bloat the blockchain with a lot of tiny transaction and to create a more fair distribution, i think all those block reward and fee should go to a single neutral adress. Then after like 1 days (1440 block), this adress would automaticly redistribute equally the reward to all blockchains with 100% uptime for that day (1440 block).
It would probably recquire a hardfork, but this would ensure people have interest in storing the entire blockchain. Because in the near future, blockchain could grow big very quickly and people would only mine on a pool, without storing the blockchain, because it's the same reward right now.
tl,dr : Storage of the blockchain need to be rewarded
I like the idea of rewarding storage of the blockchain.
As a miner, I'd be willing to store the blockchain on my mining machines. My machines all have hard drives since I'm a Windows miner, and most of my hard drive space is unused.
I could see a lot of other miners being in the same position as me, willing to store data. This would seem to exclude Linux miners though, as many, if not most of them run their machines on a USB flash drive. One potential solution to this would be to allow people to store a part of the blockchain, and compensate people by the GB.
Rewards should be more like a 95/5 (or maybe even 99/1) split though, as mining is much more important than data storage redundancy here I believe. There will always be copies of the block chain as long as there are wallets and pools running, but miners can, and will, go elsewhere. They must always be well compensated, or the security of the Datacoin network will be in danger.
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