Architecture — Non-OSDU
C4 architecture views, verification workflows, state machines, and the semantic governance chain for the standalone dVeracity stack.
System Context
C4 Level 1High-level view of dVeracity's external system dependencies and integration boundaries.
Container View
C4 Level 2Internal containers within the dVE Verification Engine: ingress, core, policy, attestation, and data stores.
Verification Batch Workflow
SequenceSequence diagram showing the end-to-end flow from ELM verification request through to VC issuance.
SC Passport Lifecycle
State MachineState machine for the Secure Commodity Passport from creation through verification to transfer.
Entity Verification Lifecycle
State MachineState transitions for individual entities through the verification pipeline.
Semantic Governance Chain
Every data structure follows a 6-stage governance pipeline ensuring traceability from visual model to running code.
Visual data modeling (.hck.json)
Validated domain structure
3-axis code assignment
Knowledge graph & validation
Formal item/attribute defs
Database, API, frontend
SysML v2 Model Structure
Types::Enumerations15+ enumsEntityType, ScopeType, Severity, IndustryType, AllocationMethod
Types::Attributes12+ attrsCO2eKg, ConfidenceScore, CarbonDebt, CarbonIntensityValue
Types::Items20+ itemsE-Ledger entity payloads, PubSub messages, verification records
ELM1 part defE-Ledger Management system as a black-box part definition
Integration8 portsPubSub ports, flow connections between dVE, ELM, external systems
Constraints10+ constraintsBalanceConservation, DataQualityThreshold, AllocationComplete
Requirements5 packagesE-Ledger principles, CSRD/ESRS, ISO 14064, PACT, Clean Fuels
SupplyChain10 files11 industry nodes, topology, allocation, behavior, verification
Calculations6 calc defsCO2e calculation, carbon intensity, confidence score formulas