$ cat projects/bhumi-ledger.md
Bhūmi Ledger — Tamper-Evident Land Registry
ULPIN-aligned land registry prototype with a public verification portal.
A blockchain land-registry prototype built for Smart India Hackathon. Land parcels map to ULPIN identifiers; records anchor on-chain for tamper evidence while encrypted PII stays off-chain in Postgres. Anyone can verify a record through a public portal; registrar actions are token-gated.
// problem
Land fraud thrives on mutable records and opaque registries — citizens can't independently verify what the state holds about their land.
// impact
End-to-end demo in one command: Hardhat-deployed Solidity contracts, an Express/ethers backend, a React registrar console with live WebSocket updates, a public /verify portal, and a dataset seeded from real data.gov.in land records. Contract and backend test suites included, with explicit "not a legal record" guardrails.
// tech-stack