Aurum (Goldmoney blockchain) needs a two way peg with Bitcoin in 2017!
Use cases: exploits on liquidity & volatility; Hedging verthaftigkeit (value-holding-ness); Arbitrage. Capital control avoidance (gold or bitcoin).
Goldmoney to ‘fix’ the price of gold in bitcoin terms twice a day. Traders submit bids and asks for bitcoin and gold during these sessions. Goldmoney attempts to match the bids and asks. A bit like the ‘London gold fix’
There are various technical ways of doing all of this that have already been described. ‘Rootstock’ seems the best. It uses different unlocking methods for each side i.e., a sidechain on the secondary blockchain (aurum) and a drivechain on the primary network (bitcoin). I digress…