Run a hybrid vaccination credential system with a private government issuance layer and a public verifiable presentation for border use. A traveler's status is confirmed at a crossing in under five seconds, with no paper forgery risk and no sensitive health data exposed.
Split issuance and verification so a border check is instant, private, and forgery-proof.
01.
The Civil Registry and DID and VC Ledger issue a vaccination credential from the health authority, so a traveler's status is signed by a trusted issuer rather than printed on a forgeable card.
02.
The Provenance Notary underpins a public verifiable presentation, so a border officer confirms authenticity cryptographically without access to the issuing database.
03.
A traveler proves vaccination status without revealing unrelated health details, so a border check exposes only what the crossing requires.
04.
Credentials verify across borders on a common presentation format, ending the incompatibility between national digital systems.
05.
A presentation with no valid issuer signature fails instantly, so counterfeit cards and screenshots cannot pass a crossing.
06.
Verification relies on cryptographic proofs rather than a live query to the issuer, so a border check works even with limited connectivity.
Follow one traveler's vaccination credential from government issuance through selective disclosure to a border verification.
10:30:05
[SYS] Issuing vaccination credential for CIT_812...
10:30:05
[CMD] issueVC { vaccine: "YELLOW_FEVER", doses: 1 }
10:30:06
[AUTH] Signing credential with authority key...
10:30:06
[OK] Credential issued at block 9901205.
Cerulea decomposes cross-border credentials into modular contracts. Each layer issues, presents, verifies, and rejects so a border check is instant, private, and forgery-proof.
Hybrid vaccination credentials are a horizontal capability. Here is how different actors in cross-border health put them to work.
Issue tamper-proof vaccination credentials from a private layer, protecting citizen health data while enabling instant verification abroad without sharing the issuing database.
Key Asset Types
Verify a traveler's vaccination status cryptographically in seconds, rejecting forgeries with certainty and clearing legitimate travelers without paper checks.
Key Asset Types
Present proof of vaccination from a personal wallet while disclosing nothing else, replacing forgeable paper cards with a private, portable credential.
Key Asset Types
Whether you are bridging a national immunization registry or enabling public verification at a crossing, Cerulea routes both into one credential system.
For health authorities on national immunization registries. Records are issued as signed credentials on the private layer through the API gateway.
Immunization Registry
National Health System
Cerulea API Gateway
Credential Signing
Cerulea Private Chain
Issuance Ledger
For border officers and travelers. A verifiable presentation is checked against the public layer directly from a wallet, without querying the issuer.
Traveler Wallet
Credential Holder
Public Verification Layer
Border Presentation
Cerulea Public L1
Verifiable Credential Anchor
Building a hybrid credential system with private government issuance, selective disclosure, and public border verification from scratch requires specialised cryptography engineers and long cross-border integration cycles. Calculate your exact deployment speed using Cerulea.
Traditional Deployment
Solidity Coding & Audits
~ 14 Months
Visual Compilation
WASM Logical Artifacts
~ 5 Weeks
The legacy timeline reflects verifiable-credential infrastructure benchmarks. Building a private issuance layer, selective-disclosure presentations, and interoperable public verification for an average deployment takes a baseline of 10 months. Building the same architecture on Cerulea takes a baseline of 2 weeks, because Cerulea Studio visually translates your issuance and verification rules into pre-audited WebAssembly binaries and provisions the credential system instantly.