According to BitcoinExchangeGuide, a federal court in California recently ruled that under certain circumstances, the IRS's request to the cryptocurrency exchange Bitstamp was legitimate. The judge found that most of the arguments put forward by William Zietzke, who filed a lawsuit against the IRS, were unfounded. It is reported that during the IRS investigation of William Zietzke, the IRS found that he did not inform him of the Bitstamp account he had at the time. This prompted government agencies to request Bitstamp to provide public key data about Zietzke's property and all its transactions. This information was considered important to assist in investigating whether he was hiding assets.