Methods and systems for controlled data sharing are provided. A method includes: communicating, as a first node of a supply chain distributed ledger, with a second node and a third node of the ledger, the nodes corresponding to a first entity, a second entity, and a third entity in a supply chain; storing, with a data management module, a hash of a public version of a contract between the first entity and the second entity; replicating the hash of the public version of the contract to the ledger; sharing a private version of the contract between the first and second nodes; storing a hash of a public version of a purchase order between the first entity and the third entity; replicating the hash of the public version of the purchase order to the ledger; and sharing a private version of the purchase order between the first and third nodes.