Systems and methods for computer-implemented commodity transactions using
blockchain-based smart contracts. A
server with memory executes application to authenticate buyer and seller, receive listing with commodity identifier, quantity, quality, delivery terms, price; generate
smart contract specifying participant identifiers, wallet or banking info, order and contract IDs,
milestone events, settlement terms;
commit contract to
blockchain;
escrow funds associated with contract; obtain shipment, inspection, and delivery status via
oracle; verify
milestone satisfaction; release escrowed funds accordingly;
record settlement on chain; and update
database. Modules may include compliance to compute taxes and fees, identity to perform KYC / AML, and dispute
resolver to execute predefined remedies. Optional
multisignature escrow and fiat or crypto settlement are supported. Executions store hashes and ledger indices to provide tamper evident audit trails.