https://www.cnbc.com/2018/02/21/venezuelan-oil-backed-cryptocurrency-petro-raised-735-million-maduro.html >Venezuela's oil-backed "petro" cryptocurrency raised $735 million in the first day of its pre-sale Wednesday, President Nicolas Maduro has claimed. >The Venezuelan president said on Twitter that the petro token raised more than 4.777 billion Chinese yuan, or $735 million, and that the state-backed virtual currency "reaffirms our economic sovereignty."