Directional content sharing method and system based on block chain

The invention provides a directional content sharing method and system based on a block chain, and the method comprises the steps: publishing sharing content: carrying out the hash operation of the sharing content, so as to generate a hash value of the sharing content; the shared content is stored in the IPFS network, and the storage address of the shared content in the IPFS network is associated with the hash value of the shared content; storing the hash value of the shared content as transaction data in a block chain, and sending a storage address of the transaction data in the block chain to a receiver user in a receiver user list; the step of obtaining the shared content comprises the substeps of obtaining a hash value of the shared content stored in the block chain based on a storage address of the transaction data in the block chain; obtaining a storage address of the shared content in the IPFS network based on the hash value; and downloading the shared content from the IPFS network. According to the di