Hi All, I try here to summarize Pro and Con of Proof of Stake (POS) feel free to participate! UPDATE: here you can find a more detailed draft how pow in combination with pos could look like:   How could Prof of Stake (POS) in combination with proof of work (POW) look like? For example the hash of the last block is used to draw one* unspent coin. The owner of the coin could now create an POS transaction that referenced the block. If the next block includes this