Regarding...
I have...
Investing to ARROW
In every round there are two arrows. Each arrow has its own bitcoin address. You can send any amount of bitcoins to an arrow of your choice. You can do this as often as you like. There is no registration you are identified via your bitcoin address only.
Until your payment is confirmed in the bitcoin network (included into a block), it is not added to the arrow's balance and appears with the note "unconfirmed" in the list of recent payments. It can take several minutes, sometimes up to one hour, to mark the transaction as confirmed.
Payments that are received before the end of the round but confirmed after the end of the round are not counted and we will arrange them to the next round. We will arrange payments that are received after the end of the round to the next round.
btcupdown.com