I think that we can utilise block chain of iCoin but we also can create a new "Proof of Investment" or "Proof of Hold" algorithm that will work along with Proof of Work in the near future. Proof of Work will remain for next few years, reward will be halving every 128,000 blocks (every 3 months) but along with it new algo will start to work. A new "Proof of Hold" will be similar to "Proof of Stake" mechanism but will have some differences.