https://motherboard.vice.com/en_us/article/qvewyv/venezuelas-petro-launch-was-amateur-hour-nem-ethereum

On Tuesday, Venezuela completed the first phase in launching the first ever state-issued and oil-backed cryptocurrency, called the Petro—and it got weird.

A Petro token was released in a pre-sale stage using a different technology than was stated in the white paper. This change was effectively announced without fanfare in a Petro buyer’s manual that the Venezuelan government released on Tuesday. The Petro white paper—an important document that lays out the technical foundations of a cryptocurrency—initially stated that the Petro token would exist on the Ethereum blockchain and be coded as a smart contract, but it was actually released as an asset on NEM. This opened the door for scammers to try and cash in on the confusion.