Abstract: A method includes generating a blockchain-based letter of credit (“BLC”) relating to a contract for a trade transaction between a seller and a buyer. The BLC defines documentary and supply chain flow payment trigger events. The BLC is stored and accessible via a blockchain. A plurality of documentary flow events related to the BLC are tracked and recorded on the blockchain, and are linked to the BLC. A plurality of supply chain flow events related to a physical status of a good involved in the trade transaction are tracked and recorded on the blockchain. Each of the plurality of supply chain flow events are linked to the BLC. Payment for the contract for the trade transaction is transferred to the seller in response to detecting occurrence of both of the documentary and supply chain flow events corresponding to the respective documentary and supply chain flow payment trigger events.