Privacy infrastructure for Cardano and Midnight
Ura builds privacy onboarding and shared transaction capacity for Midnight.
The system combines a Mithril-gated Cardano-to-Midnight bridge with a hybrid DUST Capacity Protocol. The objective is simple: make privacy-preserving applications easier to use without hiding custody boundaries or treating transaction submission as settlement.
| System | Purpose | Public status |
|---|---|---|
| Privacy Bridge | Moves a Cardano deposit through detection, Mithril certification, Midnight submission and indexer confirmation | ADA/tADA route demonstrated on Preprod |
| Capacity Protocol | Connects distributed DUST supply with bounded sponsored execution | Model B execution proven on Preprod; generalized Model A wallet signing remains integration work |
| Relay Club | Provider-facing authorization and participation layer | Preprod development |
Cardano deposit → detected and confirmed → Mithril certified → Midnight submitted → indexer confirmed → receipt
The bridge keeps Cardano detection, Mithril certification, Midnight submission and Midnight confirmation as distinct states. A detected deposit is not certification, and a submitted transaction is not settlement.
The protocol uses two connected layers:
- Model A — capacity supply: selected NIGHT UTXOs authorize future DUST generation to an external receiver while NIGHT remains in the holder's wallet.
- Model B — sponsored execution: an operator validates bounded requests and spends receiver-side DUST to sponsor approved Midnight execution.
Generated DUST at the designated receiver is controlled by the receiver/operator key. Ura describes this boundary explicitly: non-custodial applies to NIGHT, not to generated receiver-side DUST.
- Proof-gated state transitions
- Explicit custody and authorization boundaries
- Bounded sponsorship policy
- Operator-signed receipts
- On-chain inclusion evidence
- Append-only reconciliation
- No per-coin DUST attribution claims
- No production claims based only on transaction submission
- Complete one end-to-end Preprod NIGHT redesignation transaction with wallet and SDK engineers.
- Re-verify the newest signed Mithril CardanoBlocksTransactions configuration after deployment.
- Continue hardening bridge receipts, reconciliation and application sponsorship policy.
Ura is under active Preprod development. Public documentation distinguishes demonstrated behavior from planned integration. Nothing published here should be interpreted as a production deployment, audit report or invitation to deposit mainnet funds.
This profile provides the public overview for Press and Ura Labs. Architecture, protocol status, diagrams and the wallet/SDK collaboration request are maintained in the Ura Protocol repository.
Production application code, operator infrastructure, secrets and security-sensitive implementation details remain private during active development and review.
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