Tamper-evident provenance
Every document verification and ownership transfer on PlotSur is written to an append-only, hash-chained ledger. Each record contains the cryptographic hash of the record before it, so the entries form an unbroken chain. If anyone altered, removed, or back-dated a single past record, the chain would no longer compute — and this page would show it. This is what lets a PlotSur certificate be proven, years later, to have existed unchanged on its stated date.
Live integrity check
Recomputing the chain…
How to prove a certificate
- Open the certificate — note its SHA-256 fingerprint and Ledger anchor.
- The fingerprint proves the exact file that was verified. Re-hash the document to confirm it matches.
- The ledger anchor proves when that verification was recorded and that the record hasn't changed since.
- This page confirms the whole chain the anchor belongs to is still intact.
PlotSur's ledger is an internal cryptographic record. It strengthens evidence of what PlotSur recorded and when; it is not itself a government title record and does not replace an official Land Registry search.