Blockchain is a digital ledger technology that is used to record and verify transactions. It is best known for its use in cryptocurrencies such as Bitcoin, but it has many other applications beyond finance. Here are some of the most common uses of blockchain technology:

  1. Cryptocurrencies: Blockchain is used to create digital currencies like Bitcoin, which enable secure, decentralized transactions without the need for intermediaries like banks.
  2. Supply Chain Management: Blockchain can be used to track the movement of goods and materials across supply chains, providing a transparent and secure record of each transaction.
  3. Voting Systems: Blockchain can be used to create secure and transparent voting systems, ensuring that votes are recorded accurately and cannot be tampered with.
  4. Smart Contracts: Blockchain can be used to create self-executing contracts that automatically enforce the terms of an agreement.
  5. Digital Identity: Blockchain can be used to create secure digital identities that can be verified without the need for a central authority.
  6. Healthcare: Blockchain can be used to securely store and share medical records, ensuring patient privacy while allowing for better collaboration among healthcare providers.
  7. Energy Trading: Blockchain can be used to create peer-to-peer energy trading systems, allowing consumers to buy and sell renewable energy directly from each other.

Blockchain technology can be used to track agricultural products as they travel through the supply chain by creating a transparent and tamper-proof record of each transaction. Here are the steps involved in using blockchain for supply chain tracking:

  1. Creation of a digital record: Each product is given a unique digital identity that is recorded on the blockchain. This record contains information about the product, such as its origin, production date, and quality.
  2. Recording of transactions: As the product moves through the supply chain, each transaction is recorded on the blockchain. This includes information about the location, time, and party involved in each transaction.
  3. Verification of transactions: Each transaction on the blockchain is verified by a network of nodes, ensuring that the information recorded is accurate and cannot be altered.
  4. Access to information: The blockchain provides a transparent and accessible record of the product’s journey through the supply chain, enabling stakeholders to track its progress and access detailed information about its origin and quality.
  5. Improved traceability: By using blockchain to track products through the supply chain, stakeholders can quickly identify and address issues such as food safety risks or fraud, improving traceability and accountability in the food system.

Overall, blockchain technology can help to improve transparency, efficiency, and traceability in the agricultural supply chain, enabling stakeholders to make more informed decisions about the products they are buying and selling.

Prior to blockchain, producers and processors have used lot numbers. Lot numbers are needed for quality control, sell by dates and the occasional recall. If you look carefully at a can of tunafish or a box of cereal, you will find lot numbers.