Construction Evidence

Sealed Evidence for the Defects Liability Period

DLP claims arrive years after handover. Tamper-proof site records with immutable timestamps are the only evidence that survives a 6–10 year warranty window.

Why Defects Liability Period Claims Are So Hard to Defend

When a DLP dispute surfaces three, five, or eight years after practical completion, the original site records have often disappeared, been mislabeled, or lost their chain of custody. Site photos fade, digital files get corrupted, and witness memory becomes unreliable. Without sealed evidence, contractors face a credibility gap they cannot close.

Lost or Degraded Site Records After Years

Photos taken during construction are scattered across phones, emails, and shared drives. By the time a claim surfaces, files are deleted, storage accounts closed, or metadata stripped. Video and photo evidence that once existed cannot be located or verified as authentic.

No Proof of Condition at Practical Completion

Handover documentation is incomplete or informal. There is no systematic record of what the site looked like on completion day—no timestamped photos and videos showing that defects did not exist, or existed but were disclosed and accepted by the principal.

Chain of Custody Gaps in Dispute Defence

Manual photos or screenshots cannot prove when they were taken, by whom, or whether they have been altered. A principal's legal team can challenge the authenticity and timing of evidence, leaving the contractor with no defensible record.

Unverifiable Inspection and Rectification Records

Claims of remedial work or inspections are backed only by emails or printed certificates. Photo and video evidence of the work, the defect, and the fix lack cryptographic sealing, making it impossible to prove the evidence has not been tampered with.

Why Sealed Evidence Disappears During the DLP Window

Informal Handover Practices on Site

Most construction handovers rely on printed punch lists and verbal sign-offs. No systematic capture of photo or video evidence occurs at practical completion, so there is nothing sealed to refer back to years later.

Digital Files Are Not Tamper-Proof

Ordinary photos and video files can be edited, deleted, or re-uploaded with false timestamps. Without cryptographic sealing, a contractor cannot prove an image or video has not been altered or backdated.

Metadata Loss and File Corruption

File metadata (capture time, device, location) is fragile. Photos exported from phones, compressed, or forwarded through email lose their original timestamps. Videos suffer compression and quality loss, making them unreliable as evidence.

No Single Repository for Site Evidence

Site photos and videos are scattered: some on workers' phones, some in email archives, some in cloud folders with no access control. When a dispute arises, retrieving and validating the original evidence is slow and incomplete.

Witness and Documentation Turnover

Site supervisors move to new projects or leave the company. Files are not migrated, access is lost, and institutional knowledge of what was captured and when evaporates before a DLP claim arrives.

How Sealed Evidence Protects Your Construction Record

PackProof captures photos and videos at every critical milestone—practical completion, inspections, handover walkthroughs, and any remedial work—and seals each piece with SHA-512 cryptographic certification and an immutable timestamp. Years later, when a DLP claim arrives, your evidence is legally defensible and untouched.

Proof of Condition at Practical Completion

Sealed photo and video records from handover day are immutable proof of what the site looked like when you handed it over. If a defect later appears, your sealed evidence shows whether it was present, disclosed, or absent at completion.

Tamper-Proof Chain of Custody

SHA-512 sealing and immutable timestamps prove that photos and videos have not been altered, deleted, or backdated. Your evidence survives legal scrutiny and dispute resolution, even years after capture.

Instant Retrieval During DLP Disputes

All sealed photos and videos are stored in a secure, searchable repository with role-based access control. When a claim arrives, your team can retrieve the exact evidence needed—by date, location, or tag—in minutes, not weeks.

Documented Remedial Work and Inspections

Every rectification, inspection, or site walk is captured and sealed with photo and video evidence. If a principal contests your claim that a defect was fixed, sealed records of the work prove it was completed and witnessed.

How to Build a DLP-Ready Evidence Record With PackProof

1

Capture Evidence at Practical Completion

On handover day, systematically photograph and video key areas—structural elements, finishes, mechanical systems, and any known defects or exclusions. PackProof seals each photo and video with a cryptographic hash and immutable timestamp, creating a legally defensible baseline of site condition.

2

Document Handover Meetings and Inspections

Record the principal's sign-off and walk-through as sealed photo and video evidence. Capture inspection punch lists, defect acceptance notes, and any remedial work agreed on site. This sealed documentation proves what was disclosed and accepted at completion.

3

Seal Remedial Work and Follow-Up Inspections

If rectification work is required during the DLP window, seal before-and-after photos and videos of the work, the defect, and the completed fix. Every inspection or site visit is recorded and sealed, building an unbroken chain of evidence.

4

Retrieve and Present Sealed Evidence in Disputes

When a DLP claim arrives, instantly retrieve sealed photos and videos from PackProof. Present the cryptographically certified evidence to the principal, insurer, or dispute resolver. The immutable timestamp and SHA-512 hash prove the evidence is authentic and has not been tampered with.

Frequently Asked Questions

Start Building Your DLP Evidence Record Today

PackProof's free plan lets you capture and seal unlimited photos and videos with SHA-512 cryptographic certification. Start documenting your next handover with sealed evidence that will defend you for years to come. No credit card required.

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