Mirror Mode

How existing government registries join Landblock without changing how they operate.

The idea

Most governments aren't going to rebuild their land registry from scratch. Mirror Mode is how an existing registry connects to Landblock without changing anything about how it operates internally.

The registry keeps doing exactly what it already does — recording land transactions in its own database, using its own software, following its own laws. The only addition is an adapter: a piece of software that watches for changes in the registry's database and, when something changes, publishes a cryptographic proof to the Landblock blockchain.

The registry's internal data never leaves the registry. The proof — a mathematical fingerprint of what changed — goes on-chain.

What the adapter does

When a land record changes, the adapter reads the relevant fields from the registry's database, formats them into a standardized proof payload, signs the proof with the registry's private key, and publishes it to the Landblock Federation contract on Polygon. The registry's signature is what makes the proof trustworthy — just like verifying an email signature against a known public key.

Three adapter types

Type A — Real-time SQL trigger. For registries with modern databases (PostgreSQL, SQL Server, Oracle). The adapter listens to database change events and publishes proofs within seconds.

Type B — Batch export. For legacy systems that export data on a schedule (daily CSV files, periodic snapshots). The adapter processes each batch and publishes proofs in bulk.

Type C — Manual submission API. For registries not ready for automation. Staff submit proofs manually through a simple API. Highest friction, but zero infrastructure requirements.

The sovereignty guarantee

Registries never have to trust Landblock. They publish proofs, but the proofs are signed by them — so even if Landblock were compromised, a bad actor couldn't forge a proof from a registry they don't control. Each registry's private key stays entirely within the registry's own systems.

If Landblock goes offline, the registry keeps working normally. Mirror Mode is additive — it adds verifiability without creating a dependency.

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