Smart Contracts

Fabrica's property NFTs are implemented as smart contracts on multiple blockchain networks. Below are the current and historical contract addresses. Always verify contract addresses before transacting.

Upgradeability

Fabrica smart contracts use the UUPS (Universal Upgradeable Proxy Standard) pattern, allowing the protocol to:

Deploy bug fixes and security patches
Add new features and improvements
Maintain compatibility with existing tokens

The token contract's upgrade capability is currently controlled by Fabrica (decentralized upgrade governance is planned but not yet implemented). This does not compromise the walk-away guarantee: a property's ownership rests on the trust agreement, the data pinned to IPFS, and the off-chain county recovery path, all of which continue to function even if the contract were frozen or Fabrica disappeared. By contrast, the Fabrica-deployed lending pool is a renounced, MIT-licensed fork with no admin keys, no upgrade path, and no governance lever.

All contract upgrades are announced through official channels and can be verified onchain.