根据下面资料，回答下列各题。 Many bankers may be worried about whether some fancy product dreamed up might yet lead to a visit from the police. Daniel Dantas, a financier, who has profited by operating at the middle place where business and government meet in Brazil, has been opening the door to find the police outside for much of the past decade. On December 2nd he was convicted of a less sophisticated crime: trying to bribe police officers. Mr. Dantas, who has acquired great notoriety in Brazil, was fined $ 5 million and sentenced to ten years in prison. He has appealed against his conviction. The charge stems from a police investigation into money-laundering (洗钱)known as Operation Satiagraha. It grew out of a previous investigation into Mr. Dantas use of Kroll, a security consultancy, to watch over his business partners. During this investigation the police seized a computer from Opportunity, Mr. Dantass investment bank, which contained data from the mid-1990s to 2004 and apparently showed suspicious movements of money. The judge found that Mr. Dantas tried to pay bribes, via two go-betweens, to keep his name out of the Satiagraha investigation. A man fitted with a bugging device was offered $1 million in cash, with another $ 4 million to follow, the police say. They claim that Mr. Dantass trick involved money travelling to the Cayman Islands, then via the British Virgin Islands to an account in Ireland, on to Delaware, and then re-entering Brazil as foreign investment. For Mr. Dantas his crime is a steep fall from grace. A man who sleeps little and socializes less, he is a vegetarian and self-made billionaire, a gifted financier who has serially fallen out with his business partners. He once controlled a large telecoms firm, acting for investors who included Citigroup. He says he is the victim of a conspiracy mounted by the government. It is Mr. Dantas supposed influence in government circles that has added to his notoriety. During the1990s, when many state-owned businesses were privatized, Mr. Dantas positioned himself as the man with the needed expertise and contacts. He enjoyed easy access to the government of President Femando Henrique Cardoso, including meetings with the president himself. That influence carried through into the government of President Luiz Inacio Lula da Silva. Mr. Dantas is alleged to have been one of the funders of a cash-for-votes scheme in Brazils Congress mounted by leaders of Lulas Workers Party in 2003-2004. Many of those who have had dealings with Mr. Dantas insist that these have been legitimate and conducted in good faith. They include Luiz Eduardo Greenhalgh, a lawyer and PT politician, whom he hired as a consultant. What kind of crime was Daniel Dantas convicted of according to the passage?