# ZK Roadmap

Progress from verifiable commitments toward zero-knowledge proofs.

## Current Status

| Component                    | Technique                                              | Status                  |
| ---------------------------- | ------------------------------------------------------ | ----------------------- |
| Custody integrity proof      | `keccak256(fingerprint, salt)`                         | Live                    |
| Pack pool commitment         | keccak256 Merkle root with on-chain verification       | Deployed                |
| Reveal fairness              | Deterministic commit-reveal with Merkle inclusion      | Live                    |
| On-chain registry            | Freely transferable ERC-721 with role-based access     | Deployed (Base mainnet) |
| On-chain settlement          | Atomic USDC settlement with curator residual split     | Deployed (Base mainnet) |
| On-chain Merkle verification | Sorted-pair keccak256 in Solidity                      | Deployed                |
| ZK ownership circuit         | Noir + Pedersen hash + Merkle inclusion proof          | Implemented             |
| ZK ownership verifier        | UltraPlonk verifier (auto-generated from Noir circuit) | Deployed                |
| ZK reveal circuit            | Not started                                            | Planned                 |

## What's Live

**Verifiable commitments**: Every coin has an integrity proof (keccak256 hash of its fingerprint and salt) anchored on-chain. Every pack pool has a Merkle root commitment with on-chain inclusion verification. Every marketplace trade settles atomically on-chain with idempotent references.

## What's Next

**Zero-knowledge proofs**: The ZK ownership circuit (Noir) allows collectors to prove they own a specific coin without revealing which one. The UltraPlonk verifier is deployed and ready. The next step is integrating ZK proofs into the collector experience — private portfolio attestations without exposing holdings.

**ZK reveal fairness**: A planned ZK circuit that proves the pack reveal was fair without revealing the server seed, enabling fully trustless verification.


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