var evt = new BlockchainEvent
{
EventId = "evt-001",
EventType = BlockchainEventType.IncidentDetected,
Location = new Location(37.7749, -122.4194),
EvidenceCid = "Qmabc123...",
Metadata = new Dictionary<string, object>
{
["incidentId"] = "inc-001",
["severity"] = "High"
}
};