Umbra Verify

Prove your income without revealing it. Umbra Verify uses zero-knowledge proofs on Midnight to let applicants share a cryptographic yes/no with verifiers - no salary slips,no documents,no data leaks.

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posted an update —

Umbra Verify is now live on Midnight Preview

A major milestone for Umbra Verify: the EligibilityVault Compact contract has been successfully deployed to the Midnight Preview network and verified against live on-chain state.

What changed

  • Deployed the real Compact contract to Midnight Preview.
  • Connected the backend to the deployed contract instead of the previous in-memory simulation for real read operations.
  • Verified verifyEligibility against live on-chain state.
  • Added deterministic derivation and deployment verification checks.
  • Cleaned up frontend and backend type-checking issues.
  • next build now completes successfully.
  • Kept the contract source, compiled artifacts, and dependencies unchanged after deployment.

On-chain deployment

Contract: 3100fc4f0818f306ec66103ce37bb60df0ea2502c9894d4c841844aba45b76b9

Transaction: 007cc81b7f8308452689687c35aae83ad6544ebf16ebd543112d7a6ba23c44ff88

What we verified

The deployed contract is responding through the Midnight Preview indexer, and the backend successfully reads its ledger state using the compiler-generated contract reader.

The write flows (submitEligibilityProof and revokeProof) still require the final wallet-signing integration, so I'm not claiming those as completed yet.

This is an important step from a simulated development environment toward a real privacy-preserving application running on Midnight.

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