Manifesto
Every home deserves a verified history.
The most expensive purchase most people will ever make — and its history is a rumor whispered from seller to buyer, half-remembered, unverifiable.
When you buy a used car, you get a Carfax. Every accident, every service, every owner — laid out on one page you can trust.
When you buy a home — a decision ten times more expensive, a structure meant to outlive you — you get a fresh coat of paint on a story you can't check.
That is not acceptable. And it does not have to continue.
ProofChain gives every home a permanent, verifiable ID — a Home Passport ID. Every renovation, warranty, inspection and claim is signed by the professional in the best position to know: the contractor who did the work, the inspector who saw it, the insurer who covered it, the city that permitted it.
Signed. Timestamped. Owned by the homeowner. Portable across every future sale.
Why now
Cryptographic signing is finally cheap. Renovation spend is at all-time highs. Buyers demand transparency. Insurers demand provenance. Regulators are drafting the laws. Every force is aligned. The only thing missing was someone willing to build the standard.
What we promise
- · Homeowners will always view their own home's history for free.
- · Every attestation is owner-controlled. You decide what buyers see.
- · No aggregate data sold to advertisers. Ever.
- · Signed events are immutable — no silent edits, no retroactive changes.
- · The protocol will be open. The standard will belong to the industry.
We are building the trust every home deserves. Join us.