BLOCKCHAIN-BASED SOURCE-TRACING METHOD AND SYSTEM

Disclosed is a blockchain-based provenance tracing method and system. The blockchain-based provenance tracing system may comprise a service platform, the service platform referring to a decentralized peer-to-peer network built based on blockchain technology; the service platform is configurable to assign a digital assets token to a commodity and distribute the digital assets token to a brand node, and query block data associated with the digital assets token of the commodity as per a transaction application with respect to the commodity so as to trace provenance of the commodity and return a commodity provenance result to a transaction participant node; and configured to record the commodity's transaction data as block data. The embodiments of the disclosure enable the brand and the transaction participants to identify authenticity of a commodity efficiently, rapidly, and accurately.