Developers
Smart contracts, testnet addresses, interfaces, and how to build on the Landblock protocol.
Stack
- Blockchain: Polygon PoS (EVM-compatible)
- Contracts: Solidity + OpenZeppelin + Foundry
- Off-chain storage: IPFS + Filecoin
- Identity: SpruceID DIDs + ZKP selective disclosure
- Oracle: Pyth Network (LDBK/USD, MATIC/USD)
- Indexing: The Graph (Polygon subgraph)
- Account abstraction: ERC-4337 with custom paymaster
Core contracts
| Contract | Description |
|---|---|
IdentityRegistry | SpruceID DID identity with LADM Party roles and protocol access control |
EvidenceStore | IPFS CID registry with full bitemporal temporal envelope |
SpatialUnitRegistry | Physical land parcel registry with CoordsApp L1 URI validation |
BAUnitRegistry | Legal administrative units; merge and split operations |
RRRRegistry | Rights, Restrictions & Responsibilities — full lifecycle management |
RegistryDirectory | Global directory; registry accreditation and federation routing |
Federation | Cross-registry proof publication and verification with Trust Context |
DisputeRecord | Dispute notices and authority injunctions with freeze masks |
CoordsValidator | CC0 library for validating CoordsApp L1 URIs |
Governance contracts (Amoy testnet)
| Contract | Address |
|---|---|
LandblockGovernance | 0x7CfdFb396fF1597Bc3511Ec5a11e1ea2bAa0f4Cc |
LGTToken | 0xD3cBAB1887c8ac097CDc77D15ddaFfE05099fc87 |
LDBKToken | 0xDBC870f41103bf75652508E8cc032FF00B4D8049 |
LandblockPaymaster | 0xbd5309Baf33610f1Ad8C19554f8E878236919B0A |
Federation contracts pending Amoy deployment. Addresses will be updated here when live.
Network
- Testnet: Polygon Amoy (chainId 80002)
- Mainnet: Polygon PoS (chainId 137) — pending production launch
- Testnet RPC:
https://rpc-amoy.polygon.technology - Testnet explorer: amoy.polygonscan.com
Explorer
The Landblock Explorer is available in preview. Browse and verify public land records on the Landblock network.
Source code
Public documentation and protocol specification:
landblock-public.
Core contracts are in the private landblock-core repository.