I've read the whitepaper, but the only thing that really concerns me is regarding the Decentralized Exchange. Though I see no current flaws in it, there may be ways to sort of abuse it.
In the end I see one of three ways abuse would be attempted:
1) [John claims he did not receive $200 but actually did. John declines.]
John = +$200, -2.1 NMS
Jenny = -0.1 NMS
2) [Jenny claims to have sent $200, but actually did not. John declines.]
John = -2.1 NMS
Jenny = -0.1 NMS
3) [Jenny claims to have sent $200, but actually sent $100. John either accepts or declines.]
This is a mutual destruction scenario in which some interesting game theory may end up coming into play.
3a) John declines (mutual destruction)
John = +$100, -2.1 NMS
Jenny = -$100, -0.1 NMS
3b) John accepts (John realizes that either way he will lose 2 NMS but this will save him the collateral 0.1 NMS)
John = +$100, -2 NMS
Jenny = -$100, +2 NMS
John and Jenny don't have any prior knowledge of each other. When posting the trade order on the exchange only the traders Numus addresses are shown (banking details are transferred once the payment has been initiated) thus anonomity is ensured. The network automatically links to two open trade orders from Jenny and John, so they have no possible knowledge of each other besides their Numus address and thus no prior incentive to scam each other. In the end I see one of three ways abuse would be attempted:
1) [John claims he did not receive $200 but actually did. John declines.]
John = +$200, -2.1 NMS
Jenny = -0.1 NMS
2) [Jenny claims to have sent $200, but actually did not. John declines.]
John = -2.1 NMS
Jenny = -0.1 NMS
3) [Jenny claims to have sent $200, but actually sent $100. John either accepts or declines.]
This is a mutual destruction scenario in which some interesting game theory may end up coming into play.
3a) John declines (mutual destruction)
John = +$100, -2.1 NMS
Jenny = -$100, -0.1 NMS
3b) John accepts (John realizes that either way he will lose 2 NMS but this will save him the collateral 0.1 NMS)
John = +$100, -2 NMS
Jenny = -$100, +2 NMS
