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Bhūmi Ledger — Tamper-Evident Land Registry

ULPIN-aligned land registry prototype with a public verification portal.

Full-stack & blockchain developerJuly 2026Blockchain

// why: Mutable, opaque registries let land fraud thrive.

$ cat projects/bhumi-ledger.md▌

TL;DR

  • ULPIN-aligned: parcels map to standard IDs, hashes on-chain
  • Public verify: anyone checks a record without an account
  • One-command demo: contracts + backend + console + seeded data

// what does it do?

SIH blockchain land-registry prototype. Parcels map to ULPIN IDs; hashes anchor on-chain, encrypted PII stays off-chain in Postgres. Public /verify portal, token-gated registrar.

// why this project?

Land fraud thrives on mutable records and opaque registries. Citizens can't independently verify what the state holds about their land.

// what broke / learned

Later pivoted to BhoomiSahayak after field work — workflow mattered more than chain.

// results

  • 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.
ULPIN-aligned recordsPublic /verify portalSeeded from data.gov.inContract + backend tests

Tech stack

SolidityHardhatExpressethers.jsPostgreSQLReactTailwind

Source is private; happy to walk through it on a call.

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Bhūmi Ledger — Tamper-Evident Land Registry | Mrinall Samal