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by gbarc888 3573 days ago
In scenario (4), they're bank-backed crypto-currencies. Banks are trying to build their own settlement coins: http://www.coindesk.com/utilities-settlement-all-about-banks...
1 comments

other approach is issued ColoredCoin by banks - Lykke.com does this. then you get pricing of assets. fiat money are already "settlement coins", the question is about liquidity, risk and openness.