Open Arsenal

Mapping ownership through verified public records.

SignalParcel is an open-source public records intelligence system designed to map and structure land ownership, operational control, and licensing relationships across the United States. It aggregates fragmented data from county, state, and federal sources and transforms it into a unified, queryable graph that connects parcels of land to the entities that own and operate them. The goal is to make complex ownership structures readable, verifiable, and traceable using only publicly available information.

At its core, SignalParcel focuses on building a relational understanding of land systems. It links parcels to LLCs, corporations, subsidiaries, and operating entities while also tracking licensing and permit data where available. This allows users to see not just who is listed on a deed or registration, but how that entity fits into larger corporate structures and operational arrangements. The system is designed to highlight relationships such as operator versus owner mismatches and multi-entity ownership chains.

SignalParcel includes an entity resolution engine that normalizes inconsistent naming across jurisdictions, matches records across datasets, and assigns confidence scores to each inferred relationship. A graph database layer stores these connections, enabling traversal of ownership networks and visualization of complex corporate structures. The system also incorporates AI-assisted document parsing to extract structured data from filings, PDFs, and public record documents.

Additional features include temporal tracking of ownership and licensing changes over time, geographic integration through GIS-compatible parcel mapping, and a provenance system that ensures every data point can be traced back to its original public source. Together, these components create a transparent, auditable infrastructure for understanding land ownership and operational relationships at scale.