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Blockchain brings transparency and traceability to supply chains. Each product gets a unique digital on the blockchain. Immutable records track provenance from raw materials to consumer. Smart contracts automate payments when conditions are met. Counterfeit prevention through verifiable product authenticity. Temperature monitoring for cold chain compliance recorded on blockchain. Certification verification for organic, fair trade, and other standards. Recalls become instantaneous with complete product genealogy. Multi-party visibility without central authority or data silos. Permissioned blockchains like Hyperledger Fabric suit enterprise needs. Consortium blockchains enable industry-wide collaboration. Integration challenges include legacy system compatibility and standardization. IoT sensors automate data recording onto blockchain. QR codes and NFC tags link physical products to digital records. Consumer transparency through product history scanning. Regulatory compliance through immutable audit trails. Finance integration enables supply chain financing. Reduced paperwork through digitized documentation. Implementation requires industry collaboration and standards. Return on investment comes from efficiency, reduced fraud, and brand trust.