Dynamic fee

Permit shareholders to vote to set transaction fees. Default transaction fees equal to the current transaction fees should be applied if there is no transaction fee vote for a particular currency in the majority of share days for the voting period of 2000 blocks. The share day weighted median vote will be the fee. The vote will consist of an 8 bit currency/share code and an uint32 expressing the fee in satoshis.

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Transaction fees should also be set using the fee from 60 blocks in the past. Though not a protocol change, the client should use the highest fee to be charged in the next 10 blocks.

http://discuss.nubits.com/t/passed-finalized-motion-for-protocol-changes/372

Another motion changed the way votes will be counted: https://discuss.nubits.com/t/passed-motion-proposal-to-give-all-votes-the-same-weight/974

Issue #133 was marked as a duplicate of this issue.

Solution proposed in pull request #210.

Pull request merged