Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for a shipping platform are disclosed. In one aspect, a method includes the actions of receiving data identifying goods for shipping, data identifying a shipper of the goods, and a cryptographic key. The actions further include processing the data identifying the goods and the data identifying the shipper using the cryptographic key. The actions further include storing, in a blockchain, the processed data identifying the goods and the processed data identifying the shipper. The actions further include receiving a query requesting data associated with the goods. The actions further include accessing the data associated with the goods from the blockchain. The actions further include providing, for output, the data associated with the goods.