ZK Credit Global

BR → PT pilot

International trust readiness

Portable financial trust, from Brazil to Portugal

Portable financial trust, from Brazil to Portugal.

Give landlords, banks and operators a verifiable answer — "this person is ready" — without handing over a single bank statement. The passport carries the conclusion, not the paperwork.

From holder to verifier, the decision travels with enough context, no raw bank statements, and a verifiable trail for the BR → PT corridor.

Create private passport See how verification works

Trust path active

Zcash income passport policy

International readinessReady for use abroad

The same passport works for a bank in Brazil and a landlord in Portugal.

Private verificationNo raw bank records exposed

Only the policy result, validity window, and approved corridor are surfaced to the verifier.

Anchored receiptZcash shielded anchor

Verification outcomes inherit a durable receipt without publishing the holder dossier.

DEMO · 10 SECONDS

See how it works in 10 seconds.

The holder keeps the score. The proof carries only the verdict. The verifier approves without ever seeing the number. The demo below plays on its own.

HOLDER · BR

Private score

The score lives in the passport. It never leaves.

300Score

Required ≥ 650

ZK PROOF

Attestation

A Halo2 capsule with IPA. Says "≥ 650", not the number.

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Size—

Time—

VERIFIER · PT

Verdict

The verifier only sees yes or no. Never the score.

waiting…

The verifier receives only the proof.

Verifier knowledge: "score ≥ 650".

Small proof, fast. Compact Halo2 capsule. Travels on any network.

PRIMITIVE

Halo2 with IPA

Zcash-native Halo2 circuit with inner product argument verification. No trusted setup, compact proof + metadata ready for browser confirmation.

ATTESTATION

Issuer-signed credential

The score comes from an approved issuer (e.g. Serasa sandbox) in W3C VC format, signed and committed to an on-chain merkle root.

ANCHORING

Zcash shielded trail

Revocations and receipts flow through a shielded anchor on Zcash, keeping the audit trail durable without publishing the holder dossier.

Privacy and trust

The landlord sees trust. You keep your financial life private.

The product is designed to reduce unfair upfront guarantees and awkward documentation requests without exposing statements, accounts, or raw transaction history, even when the rental decision happens abroad.

The core promise: prove what matters, hide everything else.

Explicit consentSelective proofCross-border ready

What stays private

Your day-to-day finances remain in the vault.

Full statements, tax IDs, and account numbers never appear to the verifier.
Raw history stays off-chain and out of the landlord view.
You control when to share, for how long, and for which decision.

Explicit consentSelective proof

What the landlord can verify

A faster decision with less friction.

Passport status, trusted issuer, and verification validity.
Capacity and good-payer signals without raw banking disclosure.
A verifiable receipt that supports lower deposits or upfront rent.

Cross-border readyWhat the landlord can verify

With signed attestations, selective disclosure, and Halo2 + IPA verification on Zcash-native rails.

How it works

A calm path from your financial reputation to trust at your next address.

The experience turns strong payment behavior into a private, portable passport that can support an international rental decision and other cross-border use cases on Zcash-native rails.

Journey orchestration

The passport moves through clear controls: consent, proof compression, and a decision-ready readout.

1. Connect

Consented scope

Connect trusted Brazilian sources with clear consent and a precise explanation of what will be used.

IntakeConsented scope

2. Generate

Proof capsule

Turn repayment and capacity signals into a portable passport without putting your financial life on display.

CompositionProof capsule

3. Share

Decision packet

Give the decision-maker a short, verifiable view that can replace excessive deposits and guesswork.

DeliveryDecision packet

Guided entry

Pick the path that fits your role right now.

If you are issuing a passport, the experience stays calm and private. If you are checking a bundle, the reading arrives in a decision-ready format.

For holders

Issue my passport

Connect your sources, review what will be proven, and generate a passport that can be shared without exposing raw history.

Local holder accountZcash Holder PreviewSelective disclosure · settlement ready

Ana stays as the active local identity for this private flow.

Explicit consentSelective proofPortable passport

Enter as holderHolder-controlled disclosure with a shielded Zcash audit trail.

For landlords

Verify a bundle

See status, validity, and a verifiable receipt in a short read that supports rental decisions with less friction.

Active verifier profile

Choose which institutional profile should receive the decision read before entering the desk.

Housing Consortium DeskResidency and affordability review · EU Corridor

Sponsor OperationsIncome passport confirmation · LATAM Corridor

Compliance AuditShielded receipt review · Global Oversight

Passport statusTrusted issuerVerifiable receipt

Enter as verifierDecision-ready evidence with a shielded trail behind it.

For issuers

Provision an issuer

Register a bureau, fintech, or attestation authority that can sign passports with a Poseidon MAC and feed the holder runtime.

Local issuer registryMVP issuer registrySession-scoped · no persistence

Each provisioned issuer is session-scoped for the MVP. Persistence and authentication land in v2.

Poseidon MAC signing keyJurisdiction code (ISO 3166)Session-scoped registry

Enter as issuerSession-scoped provisioning; auth and persistence come in v2.