When a buyer claims you never told them about the spec change, Lotwright shows exactly who received the PDF, when, where, and whether they acknowledged it.
Upload, deliver, acknowledge, seal: every plan delivery produces its own tamper-evident record.
A buyer's attorney sends a letter claiming they were never shown a spec change. All you have is a "sent" folder, no proof it was opened, no proof it was understood, no proof at all beyond your word against theirs. That's a $3,000-8,000 legal bill even when you're right.
Every plan delivery creates a tamper-proof record automatically, no extra steps for you or your buyers.
Upload the finalized floor plan PDF. Lotwright computes a SHA-256 hash of the document, a digital fingerprint. Any future alteration of the file changes the fingerprint, proving tampering.
The buyer receives a secure link via email. When they open it, Lotwright records the timestamp, IP address, device type, and geographic coordinates of the access event.
A one-click acknowledgment confirms the buyer received and reviewed the plan. Optional: integrate DocuSign or Adobe Sign for a legally binding e-signature on the plan itself.
Every delivery event is stored permanently in immutable storage, never editable. Export a formatted PDF audit report at any time for mediation, arbitration, or civil court.
The SHA-256 fingerprint and access log are one click away. No digging through email threads before a mediation date.
Delivery records are written once and locked. No one, not even a Lotwright engineer, can edit or delete an event after it's recorded.
Records are kept for the life of your account. Warranty and defect disputes surface years later; the evidence is still there.
Not a screenshot. Not an email thread. A tamper-evident chain of custody with cryptographic proof.
Every uploaded PDF gets a cryptographic fingerprint. Present the hash in court; if the file was altered after delivery, the fingerprint won't match. Proof in seconds.
Every time a buyer opens a plan link, Lotwright logs the timestamp, IP address, and approximate geographic coordinates, without requiring a buyer account.
Delivery records are written once and locked. No Lotwright employee, not even an engineer, can edit or delete a delivery event after it's recorded.
Need a full buyer e-signature on the plan, not just an acknowledgment? Connect your existing DocuSign account. The signed document attaches to the audit trail.
One click exports a formatted PDF audit report with document fingerprint, delivery timestamps, buyer acknowledgment, and geographic data, formatted for use in mediation or court.
Plan delivery records are kept for the life of your Lotwright account, never auto-deleted. Warranty and defect disputes can surface years after close.
Included in Standard tier ($199/mo). Free during the 6-month Founding Builder program.
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