The local currency rose 1.2 per cent to US67.01¢ near 5.10am AEDT; the Bloomberg spot dollar index slid 1.2 per cent. The index is poised for its biggest weekly loss since March 2020. On bitstamp.net, bitcoin was 2.2 per cent lower to $US16,946 at 5.05am AEDT; it briefly traded below $US16,500 earlier. The cryptocurrency has tumbled 19 per cent in the last week, extending its year-to-date drop to more than 63 per cent. Crypto exchange FTX filed US bankruptcy proceedings on Friday and Sam Bankman-Fried stepped down as CEO, after a rapid liquidity crisis at the cryptocurrency group that has…