Weekend crypto digest: CFTC collateral guidance, Brazil pauses tax talks, USR stablecoin hack, CoinDCX arrests, NYSE lifts crypto ETF option limits, Bitcoin difficulty down 7.76%

CFTC published a new FAQ detailing how crypto firms can use digital assets as collateral for derivatives. Brazil's new finance minister has put a planned consultation on a crypto tax on hold as the government shifts attention to the country's October presidential election. Resolv's USR stablecoin briefly lost its peg after an attacker allegedly minted about 80 million unbacked tokens and extracted roughly $25 million, according to multiple blockchain security firms. In India, CoinDCX's cofounders were arrested over alleged fraud, local media reported. The executives denied wrongdoing and said the case stemmed from an impersonation scheme. NYSE exchanges have completed an industrywide removal of position limits on crypto ETF options. Bitcoin mining difficulty fell 7.76% in Saturday's latest biweekly adjustment.