An API paid per request, with an accountable party behind the address
ZadQ is the first product built on MintID. It is an x402 seller-verification service operated by Conectia, a disclosed related party. An x402 seller is an API, data or content endpoint paid per request in stablecoins. Through ZadQ, the seller shows with an issuer-signed attestation that an accountable, KYC-verified person stands behind its payment address. The attestation does not name the person. The person who contracts represents a seller that is a business. ZadQ records the business details that person declares, and it does not verify them in this phase.
A seller attests once, and every buyer checks it
The seller is verified once
An accepted issuer verifies the party behind the seller and issues a conventional, issuer-signed attestation for its payment address and resource. This version runs on the classical seller rail, which is MintID’s path for sellers that uses conventional signed attestations. It makes no zero-knowledge claim. The seller’s endpoint is public, so unlinkability would add nothing there. The zero-knowledge seller rail follows as a later step of the pilot.
Buyers read the signal
Explorers and buying agents check the attestation through MintID’s free verification path before they pay.
A verifier keeps it current
A registered verifier re-checks each seller on a published cadence and publishes its own signed verdict: active, suspended, revoked or unknown.
Built on standard MintID roles
The pilot is an ordinary issuer-and-verifier pairing. It needs no change to the protocol.
The payment is outside MintID. MintID and the products built on it hold no payment key, choose no payer address and settle nothing: a payment request is paid by the person’s or the authorised agent’s own wallet. Whether a payment links its payer across sellers depends on the wallet and the payment scheme, not on the identity layer.
Sellers and agents with meaningful economic volume
ZadQ is built for sellers and agents with meaningful economic volume and for regulated business counterparties. For them, the attestation brings privacy and compliance by design today. The dispute cascade of the MintID network is specified, not built. The pilot makes no promise of cost savings.
The pilot changes its proof form first, then the network it runs on
The distributed MintID network does not exist yet, so the pilot runs on the single-node production chain. It changes one thing at each step.
Single-node production chain
ZadQ runs today on the single-node production chain. Conectia operates this chain, which has been in production since 20 September 2026. The chain runs MintID’s own code without a fork. It is not yet the distributed MintID network.
Zero-knowledge proofs on the same chain
The ten-second zero-knowledge presentation already runs in production. This step is specified and scheduled. It moves seller attestations onto that presentation on the same chain, which forms the zero-knowledge seller rail. Buyer-side agent credentials come with MintID’s agent product, and they will use zero knowledge from the start.
On the MintID network
If the distributed MintID network is launched, the pilot moves onto it. Until then, nothing measured on the single-node production chain counts toward the network’s traction criterion.
What the pilot measures
Success criteria are set in advance and measured. The following signals decide whether the pilot scales:
Sellers sign up for the paid service.
Attested sellers stay beyond 90 days.
Explorers show the verdict to buyers.
Verifiers ask for the signal.
Pilot activity is reported as a related-party pilot. It is excluded from the network’s traction criterion.
Operated by Conectia, a disclosed related party
Conectia PRO operates the pilot. Conectia PRO is the trade name of Conectia OÜ, the company that conceived MintID and is building it. It is a disclosed related party of MintID, and ZadQ is Conectia’s own product. Payment addresses held by a third party on a seller’s behalf are outside this version. ZadQ’s own site is zadq.app.
Take part in the pilot
zadq.app describes ZadQ in full, and the whitepaper explains where the pilot sits in MintID’s plan. Sellers, explorers and verifiers who want to take part can get in touch.