Track Food Supply Chains Using Blockchain: 6 Steps, Costs

To track food supply chains using blockchain, every business that handles a lot of food records each handoff (harvest, packing, shipping, receiving) as a signed event on a shared ledger, keyed to the same lot code and GS1 product and location numbers. Nobody can quietly edit an event once it is written, so a buyer or inspector can follow one lot from field to shelf in seconds. The US Food Traceability Rule (FSMA 204) does not require blockchain, and the FDA will not enforce it before 20 July 2028.

This guide gives the six steps, the costs with dates and sources (build quotes, platform list prices and per-record network fees), the platforms that still run today, and a calculator to test building your own ledger against paying for a shared one.

Blockchain food traceability in short

A blockchain is a shared record book. Each participant keeps a copy, new entries are linked to old ones with cryptography, and a change to an old entry shows up at once. For food, the entries are supply chain events: this lot was harvested here, cooled there, packed with this code, shipped to that warehouse.

It helps to be clear about what the ledger does and does not do.

The big gain is speed and shared trust. Walmart’s first test cut the time to trace a package of mangoes from 7 days to 2.2 seconds. The big limit is input quality. A wrong harvest date on a blockchain is still wrong; it is only harder to change later.

How to track food supply chains using blockchain: 6 steps

The steps below work on any platform. Each one names the cost that comes with it, so you can price a project before you talk to a vendor.

Infographic

Blockchain food tracing in 6 steps

1. 1Map the chainList partners, handoffs and foods on the FDA list.
2. 2Number everythingGS1 GTIN, GLN, SSCC and a lot code.
3. 3Capture eventsRecord each handoff in EPCIS format.
4. 4Pick a ledgerPublic, permissioned or private; hash or full data.
5. 5Onboard partnersAccounts, training, sensors and data links.
6. 6Test the traceMock recall and a 24-hour spreadsheet export.

1. Map your chain and the foods that are covered

List every business that touches the product: farms, coolers, packers, processors, carriers, distribution centers and stores. Then mark each place where the food changes hands or changes form. The FDA calls these Critical Tracking Events. There are seven: harvesting, cooling, initial packing, first land-based receiving (for seafood), shipping, receiving and transformation.

Check whether your foods are on the FDA Food Traceability List. It includes fresh leafy greens, tomatoes, peppers, cucumbers, melons, herbs, sprouts, tropical tree fruits, shell eggs, nut butters, soft cheeses, finfish, crustaceans, bivalve shellfish, fresh-cut fruit and vegetables, and ready-to-eat deli salads. A grower of a listed food also needs a farm map with the name and geocoordinates of each field in its traceability plan.

Cost driver: staff time for the map and the plan. No software is needed yet.

2. Give every product, place and lot a standard number

A ledger is only useful if every partner names things the same way. Much of the food industry uses GS1 numbers, the system behind retail barcodes:

• GTIN (Global Trade Item Number) for each product and pack size.
• GLN (Global Location Number) for each farm, packhouse, warehouse and store.
• SSCC (Serial Shipping Container Code) for each pallet.
• Traceability lot code: GS1 US guidance for FSMA 204 says to use the GTIN together with the batch or lot number (application identifiers 01 and 10).

The lot code is set once, at initial packing, first land-based receiving or transformation. Later steps, such as shipping, must not create a new one. They pass the same code down the chain.

Cost driver: GS1 membership fees, label printers and case labels (GS1-128 barcodes or 2D codes).

3. Capture each event in a shared data format

Each handoff becomes an event record: what (GTIN and lot), where (GLN), when (date and time), why (shipping, receiving, packing) and how much. GS1’s EPCIS standard is the common format for these events. Version 2.0, released in June 2022, added sensor readings and certificates, which suits cold-chain and organic claims. The GS1 US guideline maps each FSMA 204 data element to an EPCIS field.

Data can be captured by scanning a case label on a phone, from an existing ERP or warehouse system, or from an IoT temperature logger in a truck.

Cost driver: integration with your current software. ScienceSoft lists the number and complexity of integrations among the main factors in its build quotes.

4. Choose the ledger and decide what goes on it

You have three choices:

• Public chain (for example Ethereum or Polygon): open to anyone, a fee for each record, no servers to run.
• Permissioned or consortium chain (for example Hyperledger Fabric, used by Walmart’s pilot): only invited members can write, no per-record fee, members share the server cost.
• Private chain run by one company: full control, but partners must trust that company, which weakens the main reason to use a blockchain.

Many systems keep the full event data in a normal database and write only a digital fingerprint (a hash) of each record to the chain. That keeps prices and trade secrets off a public ledger while still showing if a record was changed.

Cost driver: network fees on a public chain, or nodes, hosting and support on a private one.

5. Bring partners and sensors on board

Each partner needs an account, a short training session and a way to send events. Sensors need connectivity and calibration. This step is usually the slowest. In the Walmart mango pilot, suppliers had to use new labels and upload their data through a web interface.

Cost driver: onboarding time per partner, devices and data plans.

6. Test the trace before you need it

Run a mock recall. Pick one lot and ask: can we list every place it went, and every lot it went into, within an hour? Under FSMA 204, a covered firm must give the FDA an electronic sortable spreadsheet of its traceability records within 24 hours of a request during an outbreak, recall or other threat. If your ledger cannot export that spreadsheet by lot code, it does not help with the rule, whatever else it does.

If shoppers are part of the plan, add a QR code that opens a short product story. Keep that page simple; the consumer research further down shows why.

Cost driver: a few staff hours per drill, plus label design for the consumer QR code.

What goes on the ledger, and what stays off

A blockchain stores proof, not truth. If a packer types the wrong field name, the ledger will keep that mistake forever. Three habits make the data better.

Chart

Network fee per blockchain transaction

US cents per transaction, Australian seafood traceability demo, March 2025 prices

• Automate where you can. A temperature logger that writes directly to the system removes a step where a person can make an error or bend the truth.
• Check records against an independent source. Lab results, scale tickets and satellite images of the field are hard to fake after the fact.
• Keep commercial data off a public chain. Write the hash on chain and keep prices and customer names in a private database with access control.

Network fees were small on the two public chains priced in one recent study. A 2026 study in Scientific Reports built a blockchain traceability service for Australian seafood and priced it at March 2025 rates. Storing one traceability record cost about 19 US cents on Ethereum and about 0.1 cents on Polygon. A heavier smart-contract call at the start or end of each stage cost about $1.69 on Ethereum and under 1 cent on Polygon. The authors say fees would only matter at volumes in the millions of transactions.

Fees were not always this low. A 2022 cost model in the journal Systems priced a farm-to-fork trace for one bottle of olive oil on Ethereum. At its base prices the trace cost $409. With average 2020 prices it fell to $58, and with average 2021 prices it rose to $1,740. Running a private Hyperledger Sawtooth network with six nodes cost $2,520 in the same model, whatever the number of products. Public-chain fees have changed a lot since then, as the 2026 study shows. The lesson still stands: on a public chain your cost moves with the coin price, and on a private chain it moves with the number of nodes.

Satellite records are one independent check on field data. The Farmonaut Satellite + AI Farm Monitoring System, for example, keeps a dated vegetation map for each mapped field, which can be compared with the planting and harvest dates on the ledger.

▶ How satellite crop monitoring reads NDVI maps for a field over the season, one independent record to set beside what is logged on a ledger. · 19:36

A real trace: Walmart’s mango and leafy greens test

The best-known case is Walmart’s work with IBM on Hyperledger Fabric, the permissioned ledger that became IBM Food Trust. In 2016 the two companies ran two pilots: mangoes sold in US stores and pork sold in China. Tracing a package of mangoes back to the farm took 7 days with paper and email. On the ledger it took 2.2 seconds, according to the LF Decentralized Trust case study.

Walmart then used the system to trace more than 25 products from 5 suppliers. In September 2018, after a romaine lettuce E. coli outbreak, Walmart and Sam’s Club wrote to suppliers of fresh leafy greens. The letter asked them to trace their products back to the farm with blockchain and to have the systems in place within about a year.

Two lessons carry over to smaller buyers:

• The speed depended on every supplier labelling lots and uploading data at each handoff, as the pilot required.
• A very large buyer could make participation a condition of supply. A mid-sized processor without that use should budget time and money to bring each partner on board.

When a blockchain is worth it, and when a database will do

Blockchain adds cost and complexity. It earns its place only when the chain has a trust problem that a normal database cannot fix. Use these cases as a guide.

Worth testing

• Many independent firms share one record. Best for: produce, seafood or coffee chains with growers, packers, traders and retailers who do not share software. Each firm can write its own events, and no single firm controls the history.
• Buyers pay for proof of origin. Best for: premium or certified products such as single-origin coffee, organic produce or specialty honey, where fraud is a known risk and a tamper-evident record supports the price.
• Records cross borders. Best for: exporters who must show the same lot history to an importer, a certifier and a regulator in another country.

Probably not needed

• One company controls the chain. A vertically integrated grower-packer-shipper can keep the same records in its own system, with audit logs, for less.
• The goal is only FSMA 204 compliance. The rule asks for records and a spreadsheet. Many traceability tools that use GS1 data without a ledger can produce both.
• Partners will not enter data. A ledger with half the chain missing is no better than paper. Fix the habit of recording lot codes first.

A simple test: if you removed the blockchain and kept the same data in a shared database, who would lose trust, and why? If nobody can answer, start without it and add a ledger later. Records kept in GS1 EPCIS format can move to a ledger without being rebuilt.

What blockchain food traceability costs

There are three ways to pay: build your own system, subscribe to a platform, or add a blockchain layer to traceability software you already use. Each has a different cost shape.

Building your own: what food industry blockchain consulting quotes

ScienceSoft, a US software developer that builds these systems, puts a minimum viable product at about $80,000 to $150,000. A full system with a private network and smart contracts starts at about $400,000 and can pass $1.5 million. These are one firm’s published ranges, not market averages. The firm says the price depends on:

• the network type (private, consortium or hybrid);
• the scope of the smart contracts and other modules;
• the number of web and mobile apps that talk to the ledger;
• the number and complexity of integrations with ERP, warehouse and sales systems;
• security, uptime, interoperability and compliance needs.

Ask any consultant to price each of these lines separately. A single bundled quote hides where the money goes, and integration is often the largest line.

Subscribing: what a shared platform charged

Shared platforms spread the ledger cost over many members. The clearest published price list is from IBM Food Trust at its launch in October 2018. The base fee was $100 a month for companies under $50 million in revenue, $1,000 for companies with $50 million to $1 billion, and $10,000 above $1 billion. With certificates and standard support added, the totals were $3,800, $5,100 and $17,700 a month. Suppliers could share data at no charge; the fees were for the software modules.

These are 2018 list prices, and since 2023 IBM has sold the FSMA 204 offer jointly with iFoodDS (see the platforms section). Use them only as a reference point when you compare current quotes, which vendors such as Wholechain now give on request.

Paying per record

On a public chain, the fee per transaction in the 2026 study was 0.1 cents to about $1.69 at March 2025 prices, as the fee chart earlier in this guide shows. The authors say fees only matter at volumes in the millions of transactions.

Chart

IBM Food Trust monthly list price at launch

US$ per month, base fee plus certificates and standard support, by company revenue, October 2018

Calculator: build your own ledger or subscribe?

Enter your own quotes. The calculator compares the total cost over the years you choose. Onboarding partners costs money in both cases, so it is added to both sides. Treat the result as a first filter before you ask for detailed quotes.

Try the numbers for your own farm below.

Blockchain platforms for food traceability today

Many blockchain food projects launched between 2017 and 2020. Some have closed or changed course. The table lists platforms that still describe themselves as blockchain-based on their own websites, as we checked them in October 2026, plus two that have shut.

What changed at IBM Food Trust

IBM Food Trust became generally available in October 2018, when Carrefour joined Walmart on the network. In November 2022, Maersk and IBM said they would shut TradeLens, their blockchain shipping platform. They said the full industry collaboration it needed had not happened, so it could not reach commercial viability as an independent business. In September 2023, IBM and iFoodDS launched “iFoodDS Trace Exchange with IBM Food Trust” for FSMA 204 compliance. From late January 2025, IBM’s own Food Trust product page has redirected to the IBM home page, according to the Internet Archive.

We found no public announcement of a sale or a shutdown date. If you use the network or are offered it, ask who runs it today, where the data is hosted, and how you can export your records if the service ends.

How we checked

We opened each platform’s own website in October 2026 and recorded what it says about blockchain and food. We did not test the software, and a listing here is not a recommendation. Farmonaut, which publishes this guide, also offers a blockchain-based product traceability tool; judge it with the same checklist as any other vendor.

FSMA 204 and other rules: is blockchain required?

None of the US, UK and EU rules we checked requires blockchain. They require records you can produce fast. A blockchain is one way to keep them.

Chart

What the FDA traceability rule costs and saves

US$ million per year, annualized over 20 years, 7% discount rate, 2020 dollars

United States: the FDA Food Traceability Rule

The FDA’s Food Traceability Rule (FSMA Section 204) took effect on 20 January 2023. The original compliance date was 20 January 2026. In August 2025 the FDA proposed moving it by 30 months, to 20 July 2028, because firms said they needed time to coordinate across the supply chain. Congress then told the FDA not to enforce the rule before that date, and the FDA says it will comply. Check the FDA page for the final status before you plan around a date.

What covered firms must do:

• Keep Key Data Elements for each Critical Tracking Event.
• Assign a traceability lot code at initial packing, first land-based receiving or transformation, and pass it on.
• Keep a written traceability plan, including a farm map with field geocoordinates for growers.
• Keep records for 2 years. Paper is allowed, but electronic records are encouraged.
• Give the FDA an electronic sortable spreadsheet within 24 hours when it is needed for an outbreak or recall.

The FDA’s final regulatory impact analysis (November 2022) priced the rule itself. Its primary estimate of costs was $570 million a year, against $780 million a year in health benefits and $575 million in other benefits from avoiding overly broad recalls (2020 dollars, 7% discount rate, 20 years). The ranges are wide, as the chart at the top of this section shows.

USDA has also tested blockchain. In 2019 its Food Safety and Inspection Service awarded IBM a $269,450 contract for a proof of concept on export certificates for meat, poultry and eggs, according to CoinDesk. This was a study, not a rule.

United Kingdom: one step back, one step forward

In the UK, food businesses must hold traceability information for their suppliers and business customers, known as one step back and one step forward, and must be able to show it on demand, according to the Food Standards Scotland traceability guide. Retailers and caterers do not need to keep this information for sales to the final consumer. The guide does not name any technology.

EU deforestation rule: where the farm is matters

The EU Deforestation Regulation (EUDR) covers cocoa, coffee, palm oil, soy, cattle, rubber and wood. It will apply from 30 December 2026, and from 30 June 2027 for most micro and small operators, according to the European Commission FAQ. Each plot needs geolocation. For plots over 4 hectares (other than cattle), that means a polygon of the field boundary, with coordinates to six decimal places. A blockchain can carry these polygons from farm to importer, but it cannot create them. Someone has to map each field first.

Check the current rules with your local food safety authority before you rely on any date in this guide; this is general information, not legal advice.

▶ How to draw a field boundary three ways, the kind of field map and polygon that FSMA 204 farm maps and EUDR geolocation call for. · 3:50

How long a rollout takes and how to bring growers on board

There is no standard timeline, but the public cases give a sense of scale. Walmart gave its leafy greens suppliers about a year. The FDA gave the whole US food industry just over three years from the final rule to the first compliance date, then proposed 30 more months because many firms were not ready. Plan in months, not weeks, and expect partner onboarding to take longer than the software.

Ways to keep suppliers on side:

• Start with one product and three to five partners. Prove the trace works and fix the gaps before you add more.
• Ask for data they already have. If a packer already prints GS1 case labels, build on those rather than adding a new code.
• Offer more than one way to send data: a phone app, a spreadsheet upload or a direct link from their software.
• Show growers what they get back, such as faster payment, proof for a premium label, or fewer audit requests.
• Agree on data ownership in writing. Say who can see which fields and what happens to the data if a partner leaves.

Do shoppers use the QR code?

Consumer-facing traces only pay off if people use them. A peer-reviewed study in Frontiers in Sustainable Food Systems surveyed 322 shoppers at four supermarkets in Shenzhen, China, in April and May 2024. Of them, 47.83% said they had only heard of food traceability technology, and 39.44% had used it one to four times in the past month. Intention to adopt scored 3.70 out of 5. Perceived ease of use scored lowest, at 2.95 out of 5.

The study covers one city and only shoppers screened for some prior knowledge of traceability systems, so do not read it as a global figure. Its message is still useful: shoppers rated the system as useful (3.84 out of 5) but not easy to use (2.95). Test the QR page on a cheap phone, in a store, with real shoppers, before you print it on packs.

Checklist for any blockchain traceability vendor

• Ask which fields come from sensors and which are typed in. The typed fields are where errors enter.
• Ask which ledger it uses and why. Public, permissioned or private each changes the cost and who you must trust.
• Ask for GS1 support. GTIN, GLN, SSCC and EPCIS 2.0 events let you switch vendors without recoding your chain.
• Ask for the FSMA 204 export. The system should produce the FDA sortable spreadsheet by lot code, on demand.
• Ask for a cost breakdown against the five build drivers above, not a single bundled price.
• Ask what happens to your data if the service closes. TradeLens shows that large backers do not guarantee a platform will last.
• Test the consumer page with real shoppers if you plan to use one.

FAQ

How do you track food supply chains using blockchain?

Give each product, place and lot a standard number (GS1 GTIN, GLN and a lot code), record every handoff as an event, write each event or its fingerprint to a shared ledger, bring each partner on board, and run mock recalls to check that you can follow one lot from farm to store.

Does FSMA 204 require blockchain?

No. The FDA rule asks for specific records for foods on its Food Traceability List and a sortable spreadsheet within 24 hours of a request. Any system that can do that is acceptable. The FDA will not enforce the rule before 20 July 2028.

How much does blockchain food traceability cost?

One developer, ScienceSoft, quotes about $80,000 to $150,000 for a pilot and $400,000 to $1.5 million or more for a full system. IBM Food Trust’s 2018 list prices ran from $100 to $10,000 a month in base fees. Public network fees in a 2026 study were 0.1 cents to about $1.69 per transaction.

Is IBM Food Trust still available?

IBM no longer shows Food Trust as a product on its website; the page has redirected to IBM’s home page since early 2025. Since 2023 its FSMA 204 offer has been sold with iFoodDS. We found no public notice of a sale or shutdown, so ask any vendor who runs the network today.

Is blockchain better than a normal traceability database?

It is better when many companies that do not fully trust each other must share one record, or when buyers want proof that records were not changed later. When one company controls the chain, a well-run database with audit logs often does the same job for less.

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