- U.S. manufacturing data due on Tuesday could show continued contraction, weakening the dollar index and boosting Bitcoin.

- Friday's U.S. employment data could add to dollar weakness, according to ING.

- Bitcoin has fallen 10% in the week to Sept. 1, despite earlier gains.

- U.S. economic data this week will shape the dollar and cryptocurrencies going forward.

- Weak data could raise the prospect of a Fed rate cut, supporting risk assets.

- Technical indicators point to a possible continuation of the bearish trend for Bitcoin.