Signed PDF certificate
Lists the certified content, timestamp, hashes, and signature.
Use case · Landlord & tenant disputes
Certify evidence for landlord and tenant disputes
Tenancy disputes often turn on what the listing said, what was communicated by message, or what the property looked like at move-in. Certify each piece of evidence at the moment it matters — landlords and tenants alike benefit from time-anchored proof.
RFC 3161Qualified timestamp
Ed25519Signed manifest
PDF + ZIPTribunal-ready package
Why a screenshot is not enough.
Listings change. Messages disappear. Memories diverge. A certificate fixes the facts.
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Listings can be edited or removedA screenshot of a Rightmove or Idealista listing does not bind the URL or date.
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WhatsApp screenshots are easy to dispute"I never sent that" is the most common landlord defence.
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Move-in photos lack metadataJPEG dates are editable. A File certificate hash-locks the photo to a verified time.
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Tribunals want chains of evidenceSingle screenshots without timestamps are weakest in deposit disputes.
What a certified rental-evidence package contains.
Listing page capture
For listings and online ads — full page screenshot and resolved URL.
Browser session video
For WhatsApp Web with the landlord or letting agent.
Move-in photos (File)
Each photo or inventory PDF hashed and timestamped individually.
RFC 3161 timestamp
Independent third-party signature on every artifact.
Metadata ZIP
Manifest, signature, public key for independent verification.
How to document a tenancy in five steps.
Build the file at move-in, not at the dispute. The earlier the timestamp, the stronger the evidence.
1
Certify the listing the day you signWebsite certificate on the URL. Locks in the description and photos.
2
Photograph every room at move-inUpload each photo as a File certificate within 24 hours.
3
Capture all messaging conversationsWhatsApp Web inside a Browser Session — landlord, agent, building manager.
4
Certify the signed inventory or contractPDF as File certificate. SHA-256 hash binds the contract to a timestamp.
5
Re-capture if disputes ariseLate-in-tenancy disputes are stronger when the original capture is on file.
How to capture each evidence type.
WhatsApp with landlord
Use WhatsApp Web inside a Browser Session and scroll slowly.
Email correspondence
Certify each email in webmail, or save .eml and upload as File.
Listing page
Website certificate by URL — Rightmove, Idealista, Zillow, anywhere the listing is published.
Landlord-tenant questions, answered directly.
How do I prove what a rental listing said before the landlord edited it?
Open a Website certificate at /certificates/new and submit the listing URL the day you view or sign for the property. The capture preserves the page exactly as it was published, with a qualified RFC 3161 timestamp.
Can WhatsApp messages with my landlord be used as evidence?
Yes. Use a Browser Session to record WhatsApp Web with the relevant conversation. The signed video and HAR are far harder to dispute than phone screenshots.
How should tenants document property condition at move-in?
Take photos and videos of every room, upload them as File certificates, and certify the inventory document with the landlord's signature. Time-anchored proof prevents deposit disputes.
Are landlords better off using this service too?
Yes. Landlords benefit from certified evidence of move-out condition, missing items, and tenant communications. The asymmetry of a single signed party often invites disputes.
Is this legal advice?
No. This service creates technical evidence artifacts. Legal admissibility depends on jurisdiction and circumstances. Consult qualified legal counsel for advice specific to your situation.
Ready to certify?
Certify at move-in — the deposit dispute resolves itself when the evidence is already on file.