Documentation

Key Concepts

Fabrica connects real property to blockchain infrastructure through a carefully designed system. Understanding these core concepts helps you see how onchain ownership actually works.

Property Tokens

Each property is represented as a Property Token, an ERC-1155 NFT that serves as the authoritative record of ownership.

What the token represents:

  • Full ownership rights to the underlying property
  • The ability to transfer, sell, or use as collateral
  • Access to property metadata, documents, and validation status

What makes it work:

  • Standard NFT interface means compatibility with wallets, marketplaces, and DeFi protocols
  • Onchain metadata provides transparency about property details and status
  • Token possession equals property control, no separate paperwork required
A property in California for sale on OpenSea

A property in California for sale on OpenSea

Legal Wrappers

Property tokens need a bridge to the traditional legal system. Legal Wrappers provide this connection, retrofitting the existing legal system rather than replacing it.

In the United States, Fabrica uses a purpose-built trust structure:

  • The Fabrica Trust holds legal title to the property at the county level
  • The property token represents beneficial ownership of that trust interest
  • Token transfers automatically transfer the beneficial interest, no deed required

This structure was developed through 8 versions of the trust agreement, refined since 2017 and now open-source. It ensures:

  • Property rights are protected under existing law (UCC Article 12 compliant)
  • Transfers are designed to be recognized by courts and have been accepted by title companies
  • Owners maintain full control without company intermediation

The legal wrapper is the innovation that makes onchain real estate possible. It's not a workaround, it's a carefully constructed interface between two systems. The wrapper is also asset-class-agnostic: the same trust structure can hold any deeded real property. Fabrica focuses on land first because raw land is the most underserved and least encumbered case, but the mechanism is the same for any property type.

Validators

Validators are the trusted parties that verify and maintain property tokens. Tokens are minted by the smart contract, not by the validator; minting is permissionless, and Fabrica typically mints on the owner's behalf through its interface as a convenience. Either way the token represents the owner's property, Fabrica does not own or control it. Validators perform the critical functions that keep the system reliable:

At on-ramp:

  • Verify the property owner's identity and authority
  • Confirm clear title through title search
  • Prepare and record legal documents
  • Confirm the property is ready for the owner to mint the token

Ongoing:

  • Monitor property status (taxes, liens, encumbrances)
  • Maintain the confidence score that reflects property health
  • Forward mail and official correspondence
  • Update metadata when property details change

Validators are licensed, bonded, and accountable. In the US, Fabrica's validator holds 20+ regulatory licenses and operates across all 50 states and 3,000+ counties, the result of years normalizing jurisdiction-specific rules into a single coherent system.

How They Work Together

The three components form a complete system:

How Fabrica's components fit together: the property token (onchain) maps to the legal wrapper (Fabrica Trust), which holds title to the real property, with the validator verifying and maintaining the link
  • Token provides programmable ownership and DeFi integration
  • Legal wrapper ensures transfers are legally valid
  • Validator maintains the link and keeps the system trustworthy

When you transfer a property token, you're not just moving a digital asset, you're executing a legally binding transfer of real property rights. The token does not point to the property, it controls it: control of the token carries beneficial ownership, and transferring the token to another owner conveys that ownership, while record title stays within the trust. Transfers into functional contracts such as lending or escrow are the exception, holding the token in custody without changing beneficial ownership (see Fabrica Trust).

Core Principles

These concepts reflect Fabrica's design philosophy:

Non-Custodial Ownership
You hold your property token. No company, including Fabrica, can move, freeze, or control your asset. The smart contracts enforce this, it's not a policy choice that could change.

Legal Compatibility
We work within existing property law, not around it. Fabrica tokens are designed to be recognized by courts, accepted by title companies, and built to comply with applicable regulations.

Open Infrastructure
Property tokens use standard interfaces. Developers can build applications, marketplaces can list properties, and lending protocols can accept collateral, all without Fabrica's permission or involvement.

Transparency
Property status, validation history, and confidence scores are visible onchain. Buyers and lenders can verify everything before transacting.

Next Steps

Ready to see these concepts in action?