Stand up a checkout experience where a customer sees the exact customs duty for an international order upfront, with the amount anchored for customs clearance. Trade Finance Documents, Compliance Attestations, and Invoices and Billing bind verified product classification to a calculation that matches what customs authorities expect.
Turn an opaque post-delivery surprise into a verified landed cost the buyer agrees to at checkout.
01.
Compute duty from verified product classification. The contract resolves the HS code and destination rate at checkout, so the quoted amount reflects the same basis customs will apply.
02.
Seal the calculation on-chain. Once the buyer accepts, the duty figure and its classification inputs are anchored, giving customs a verifiable reference at clearance.
03.
Assemble the paperwork automatically. Trade Finance Documents package the commercial invoice, classification, and value declaration into a bundle that travels with the shipment.
04.
Prove the declared value. Compliance Attestations bind the order value and origin to the calculation, reducing the chance of a customs reassessment on arrival.
05.
Collect duty with the order. Invoices and Billing itemise product, shipping, and duty into a single settled charge, so the buyer pays a complete landed cost once.
06.
Remove the trigger for rejection. Because the buyer already saw and paid the duty, parcels are no longer refused at the door over an unexpected charge.
Follow an international order from classification through the anchored duty quote to customs clearance.
08:31:17
[SYS] Initializing Classification Manifest...
08:31:17
[CMD] classify { sku: "WTCH_09", hs: "9102.11", origin: "CH" }
08:31:18
[AUTH] Verifying HS code against product attributes...
08:31:18
[OK] Classification sealed for SKU WTCH_09.
Cerulea decomposes cross-border duty into modular contracts. Each layer classifies the product, computes the charge, anchors the landed cost, and exposes it to customs without a hidden markup.
Upfront, anchored landed cost is a horizontal capability. Here is how different cross-border actors put the duty layer to work.
Show a complete landed cost at checkout so international buyers commit with confidence. Refused deliveries over surprise duty fall away and cross-border conversion improves.
Key Asset Types
Receive shipments that arrive pre-classified and pre-paid. Brokers clear parcels against an anchored declaration instead of chasing missing paperwork at the border.
Key Asset Types
Verify declared duty from a signed reference. Authorities read the anchored calculation directly, cutting reassessment workload and undervaluation disputes.
Key Asset Types
Whether you are bridging a storefront and tax engine or routing broker and customs signals, Cerulea anchors one landed-cost record every party can trust.
For retailers on existing e-commerce and duty-calculation stacks. Classification and rate data are translated into anchored duty quotes through the API gateway automatically.
Storefront / Tax Engine
Checkout & Rate Systems
Cerulea API Gateway
Duty Hashing & Sealing
Cerulea Private Chain
Landed Cost Ledger
For customs brokers and border authorities. Signed clearance queries read the anchored duty and bundle directly from the ledger for verification at the port.
Broker / Customs Portal
Clearance Systems
Consortium Validators
Declaration Consensus
Cerulea Ledger
Anchored Duty Record
Building a classified duty calculator with anchored landed cost, document bundling, and a customs verification window from scratch requires specialised trade 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 cross-border commerce engineering benchmarks. Integrating classification data, building a destination-rate duty engine, and anchoring a landed cost customs can verify for an average storefront takes a baseline of 8 months. Building the same architecture on Cerulea takes a baseline of 2 weeks, because Cerulea Studio visually translates your classification and duty rules into pre-audited WebAssembly binaries and provisions the landed-cost ledger instantly.