In a manufacturing audit, you must prove not just what your quality records show, but when they were true.

Producing and maintaining COSHH and PUWER risk assessments for every hazardous substance and piece of work equipment across the site.

Timestamp each risk assessment at the point of sign-off. When an incident occurs and the investigation asks whether the risk assessment was adequate and in force at the time, the blockchain record shows its exact date of existence, independently of the file's own metadata, which any administrator can alter.

Tata Chemicals Europe was fined £1.125M (HSE, June 2024) after an investigation found that no permit was in place for hazardous work and risks had not been properly assessed. The company had previous prosecutions for the same site. The question in every HSE prosecution is not whether you have risk assessments today, but whether they existed and were adequate at the time.

Opening and closing corrective and preventive action records when non-conformances are identified during production, incoming inspection, or customer feedback.

Timestamp each CAPA at the point it is opened, updated, and closed. Provides an independently verifiable record of the timeline, proving to an ISO auditor, insurer, or court that corrective action was taken before affected product was released, not backdated after a customer claim arrived.

A CAPA record that cannot prove its timeline is a major nonconformity in any ISO 9001 audit. Major nonconformities must be resolved before certification is maintained. Loss of ISO 9001 certification can disqualify a manufacturer from regulated supply chains and trigger customer contract clauses.

Scheduling and recording statutory inspection intervals for work equipment, lifting equipment, and pressure vessels under PUWER 1998, LOLER 1998, and PSSR 2000.

Timestamp each inspection record at the moment the competent person signs it off. If an equipment failure or incident prompts a question about whether the last inspection was current, the blockchain record proves the inspection happened when it was recorded, not after the event.

HSE improvement and prohibition notices citing 'no evidence of statutory inspection' are among the most common manufacturing enforcement actions. Failure to comply with an improvement notice converts to a criminal offence, and prohibition notices halt production immediately.

Auditing, approving, and maintaining records of sub-suppliers, including qualification audits, approved-supplier-list updates, and supplier performance reviews.

Timestamp each supplier qualification and approved-supplier-list entry at the moment it is issued. Proves to an auditor or in a product liability claim that the supplier was assessed and approved at the time they were used, not added retrospectively to the approved list after a customer raised a concern.

A product liability claim or customer audit that finds a supplier used before their qualification was completed creates a liability chain that can run from the sub-supplier through to the end manufacturer. ISO 9001 Clause 8.4 requires documented evidence of control of externally provided processes, products, and services.

Issuing Certificates of Conformance or Certificates of Analysis for manufactured batches and recording the inspection and test results used for the release decision.

Timestamp the specification in force at the time of release and the test records used for the release decision. If a customer or regulator later questions whether the product met the specification in force at the time of manufacture, the blockchain record proves both the specification and the test data existed and were current at the moment of release.

A product recall or customer return that hinges on whether a released batch was tested against the correct specification requires contemporaneous proof of both the specification and the test records. Without independent timestamps, these records can be challenged as retrospective in any tribunal or court.

Issuing new and revised process instructions and recording operator training completions across multiple shifts and production lines.

Timestamp each training record at the moment it is signed off. Proves to an ISO auditor, HSE inspector, or insurer that the operator received the required training before performing the process, not that training was entered into the system after an incident prompted a records review.

An incident caused by an operator who was recorded as trained only after the event can void employer's liability insurance where the insurer challenges whether documented training actually preceded the work. Contemporaneous proof of training completion is the primary defence in such claims.

Issuing Engineering Change Notices (ECNs) when products or processes are modified, with approval records showing who authorised each change and when.

Timestamp each ECN at the point of authorisation. Proves in a product liability claim or customer audit that the change was authorised and in force before the first batch made to the new design, not raised retrospectively to explain a deviation that had already occurred.

Boeing's $487M DOJ settlement in 2024 was built in part on inspection and change records that had been falsified or backdated. The core weakness was that no independent third-party record existed at the time the events were claimed to have occurred. Volkswagen's €1B penalty in 2019 arose from emissions test records that were manipulated to look identical to authentic ones.

Performing and recording final inspection and test results across outbound batches before dispatch to customers.

Timestamp final inspection records at the moment they are completed. If a quality dispute arises after delivery, the blockchain record proves the inspection took place at the time of dispatch, not that records were completed retrospectively when the claim arrived.

Product liability claims in which no contemporaneous inspection record can be produced before dispatch are consistently treated by courts and insurers as evidence that no inspection occurred. The absence of an independent pre-dispatch timestamp is structurally the same as no record.