AI-assisted checks. Clear findings.
A clearer picture of your
sponsorship document.
Check your original PDF for signs of tampering or fabrication with our AI-assisted review. Add an employer double-check if needed, and follow progress through your private tracking link.
Independent document review. No Home Office affiliation or visa guarantee.
Original preserved
No compression or conversion
AI-assisted checks
Supported by our team
Public register checks
Findings explained clearly
No account needed
Your private tracking link
Upload Your Sponsorship Document
Submit your Certificate of Sponsorship (CoS), sponsor offer letter, or Annex PDF for independent verification.
Click to select PDF or drag and drop
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From upload to a clearer answer
One straightforward submission. No customer account required.
- STEP 01
Upload your original
Choose your original sponsorship PDF and enter your contact details. We preserve your file without compression or modification.
Original bytes preserved
- STEP 02
Choose and pay
Review your details, choose a package and pay with an available provider. The provider must confirm payment before review starts.
Provider-confirmed payment
- STEP 03
AI-assisted document checks
Our AI model checks for signs of tampering, edits or fabrication. Choose Check with company for an additional employer double-check.
AI checks · Optional employer contact
- STEP 04
Follow your progress
Use your private tracking link to see updates. We email you when your report is ready to view and download.
Private tracking and report
How It Works
Upload your CoS PDF for AI-assisted checks for signs of tampering, edits or fabrication. For further reassurance, add an employer double-check with our team.
Your original stays original
Your uploaded PDF stays unchanged. We record a SHA-256 checksum to check file integrity, without compression, conversion or re-saving.
Tampering and modification checks
Our AI model looks for signs of edited text, replaced details and other changes to your PDF.
Signs of fabrication
We examine the document structure, formatting and available metadata for inconsistencies that may indicate a fabricated copy.
Sponsor and document details
We compare sponsor information with the public register and look for conflicting names, job details and dates.
An optional employer double-check
Choose Check with company for our team to contact the employer using independently sourced details and seek confirmation.
Clear findings, privately shared
Your report explains the findings, any concerns and the outcome of employer contact, where included.
Careful review. Clear communication.
Understand what was checked and where further clarification is needed.
Original file integrity
We retain the exact uploaded PDF and verify its stored checksum. A file integrity check is separate from a finding about authenticity.
AI checks with team support
AI-assisted checks highlight possible inconsistencies. Our team reviews findings and handles employer contact when included.
Clear progress updates
See payment confirmation, review progress, requests for clarification and report availability using your private tracking link.
Private document access
Original documents and reports are stored privately. Staff access is authorised, and download links have a short lifetime.
Email and a private link
We send payment confirmation and review notifications to the address you provide. Your tracking page remains available if an email is delayed.
Findings with context
We distinguish document observations, public register information and unresolved questions. We explain the limits of the evidence available.
Why preserving the original PDF matters
Your file may contain useful properties and embedded information. We keep the original bytes unchanged and check its SHA-256 checksum. Preserving a file protects the evidence available for review; it does not prove that the document is genuine.
Choose your review package
No recurring subscriptions, hidden fees, or account tiers. Pay only when you verify a document.
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How to Know If Your CoS Is Genuine
Essential things to check before trusting your UK Certificate of Sponsorship.
Ready to verify your sponsorship document?
Send your original PDF for AI-assisted checks, with clear findings and private progress updates. No account creation required.