Paper artwork tracing and anti-counterfeiting method and system based on block chain

The invention discloses a paper artwork tracing and anti-counterfeiting method and system based on a block chain. The method comprises the steps of generating a block chain external account of an artist by means of a personal public and private key pair of the artist, creating an artist intelligent contract including a block chain external account address, a public key in the personal public and private key pair, and the artist personal information; storing the artwork information and the block chain external account address of the artist in the readable area of an NFC chip, storing the private key in the personal public and private key pair in the unredabl area of the NFC chip, and locking the NFC chip to a readable mode; and creating an artwork intelligent contract including the artworkinformation, the block chain external account address, the artwork information, and the ID information of the NFC chip on the block chain; wherein the artwork information includes an artwork name, anartist, a price and an own