Run a digital travel document network where passports and visas are verifiable credentials, forgery is detectable, and overstay tracking is automated. DID and VC Ledger, Civil Registry, and Compliance Attestations anchor the core, so an immigration officer scanning a passport confirms validity, visa status, and overstay flags in seconds without contacting the issuing authority.
Turn forgeable paper travel documents into verifiable credentials checked in seconds at the border.
01.
Issue documents as VCs. The DID and VC Ledger mints each passport and visa as a verifiable credential bound to the holder's identity, so authenticity is cryptographic, not visual.
02.
Confirm at the desk. A border officer verifies a document against the ledger in seconds, without a real-time call to the issuing authority.
03.
Reject fakes structurally. A forged or altered document fails signature verification, so counterfeit travel papers are detectable rather than passing a glance check.
04.
Attach current status. Each visa's validity and conditions are bound to the passport credential, so status is read from the ledger, not a separate stamp.
05.
Track entries and exits. Entry and exit events are recorded, so overstay flags are computed automatically instead of reconstructed from disconnected logs.
06.
Verify without exposure. Selective disclosure lets an officer confirm validity and status without pulling the holder's full record into a central query.
Follow a single traveler from credential issuance through border verification to automated overstay tracking.
09:10:11
[SYS] Issuing travel credential...
09:10:11
[CMD] issuePassport { holder: "did:cer:71a2", type: "P", exp: 2036 }
09:10:12
[AUTH] Signing with passport authority key...
09:10:12
[OK] Credential anchored at block 6812233.
Cerulea decomposes travel verification into modular contracts. Each layer issues, binds, verifies, and tracks without exposing the holder's full record to a central query.
Verifiable travel credentials are a horizontal capability. Here is how different actors put the digital document network to work.
Verify document authenticity, visa status, and overstay flags in seconds at the desk, replacing slow issuing-authority callbacks and visual forgery checks.
Key Asset Types
Issue tamper-proof credentials and revoke them instantly on the ledger, so a lost or cancelled document cannot be used to enter a country.
Key Asset Types
Prove identity and visa status through selective disclosure, confirming validity at the border without exposing their entire record to a central query.
Key Asset Types
Whether you are bridging a legacy passport and immigration system or verifying credentials from border scanners, Cerulea routes both into one digital travel document network.
For passport and immigration control systems. Issuance and movement events are translated into verifiable credentials and entry-exit records through the API gateway automatically.
Passport & Immigration Systems
Authority Records
Cerulea API Gateway
Credential Issuance & Signing
Cerulea Private Chain
Travel Document Ledger
For border desks and e-gates. A signed scanner verifies each credential at the desk and records entry or exit directly to the ledger.
Border Scanner / e-Gate
Immigration Endpoints
Consortium Validators
Verification Consensus
Cerulea Ledger
Verified Credential Record
Building a travel document network with verifiable credentials, second-scale border verification, and automated overstay tracking from scratch requires specialised engineers and long integration cycles. Calculate your exact deployment speed using Cerulea.
Traditional Deployment
Solidity Coding & Audits
~ 13 Months
Visual Compilation
WASM Logical Artifacts
~ 4 Weeks
The legacy timeline reflects identity and border-control integration benchmarks. Building a verifiable credential layer, wiring border verification, and shipping automated overstay tracking for an average network takes a baseline of 9 months. Building the same architecture on Cerulea takes a baseline of 2 weeks, because Cerulea Studio visually translates your credential and verification rules into pre-audited WebAssembly binaries and provisions the travel document network instantly.