Coinsetter has built a bitcoin trading platform to execute orders in "milliseconds", with future plans to allow margin accounts.
New York-based exchange Coinsetter is close to completing an interim funding round twice the size of its April investment.
Should bitcoin transactions be marked to prove they didn't come from criminals? Should identities behind bitcoin addresses be verified?
Coinsetter has launched a service supporting international users, with US clients restricted to derivative trading.
The new virtual currency exchange has raised $3.25m, bringing its total funding to-date to $5.5m.
Banks have a lot to lose, and little to gain with bitcoin. So how scared are they of bitcion?
Bitcoin's finest have launched a self-regulatory group. Will it be enough to mitigate regulatory pains?