diff --git a/src/constants.js b/src/constants.js
index 5be3f76..3e91d7e 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -63,6 +63,11 @@ export const ROUTES = [
     unlock_den: 0,
     unlock_aut: 0,
     desc: 'The coastal road. Safe, slow, reliable.',
+    // Provenance — stub H3 IDs reference TESSERA cells for origin region.
+    // These become live TESSERA API queries in OTIVM-V.
+    origin_h3_r5: '851e805bfffffff',   // Ostia hinterland, Tyrrhenian coast
+    origin_region: 'Latium, Campania',
+    cultural_note: 'Olive groves established before Rome. Garum production coastal.',
   },
   {
     id: 'wine',
@@ -76,6 +81,9 @@ export const ROUTES = [
     unlock_den: 120,
     unlock_aut: 5,
     desc: 'Via Appia. Faster in autumn.',
+    origin_h3_r5: '851e8333fffffff',   // Campanian interior, volcanic soils
+    origin_region: 'Campania',
+    cultural_note: 'Campanian wine traded north since Etruscan period. Wool from upland flocks.',
   },
   {
     id: 'grain',
@@ -89,6 +97,9 @@ export const ROUTES = [
     unlock_den: 350,
     unlock_aut: 15,
     desc: 'Open sea crossing. Amber from the northern forests.',
+    origin_h3_r5: '851e8ba3fffffff',   // Apulian plain — grain. Amber: northern H3 stub pending TESSERA OCC_FLAG
+    origin_region: 'Apulia — grain; Baltic coast — amber',
+    cultural_note: 'Amber passed through a dozen hands before Brundisium. Origin: Maglemoisian forests.',
   },
   {
     id: 'linen',
@@ -102,6 +113,9 @@ export const ROUTES = [
     unlock_den: 800,
     unlock_aut: 30,
     desc: 'The great southern route. Fortune awaits the bold.',
+    origin_h3_r5: '85386e23fffffff',   // North African littoral, Carthage hinterland
+    origin_region: 'North Africa, Arabian peninsula',
+    cultural_note: 'Linen woven on looms unchanged since Neolithic. Frankincense route predates Rome by millennia.',
   },
 ]
 
@@ -141,17 +155,4 @@ export const JOURNAL = {
   ],
 }
 
-export const INITIAL_STATE = {
-  den: 50,
-  aut: 0,
-  dispatches: 0,
-  chapter: 1,
-  route_dispatches: {},
-  journal_seen: [],
-  token: null,
-  created_at: null,
-}
-
-export const OTIUM_DURATION_MS = 8000
-export const OTIUM_BASE_AUT = 1
-export const MAX_CONCURRENT_PLAYERS = 128
+export const INITIAL_STATE = {  den: 50,  aut: 0,  dispatches: 0,  chapter: 1,  route_dispatches: {},  journal_seen: [],  // active_dispatch: records the in-progress dispatch for position tracking and  // real-time duration (OTIVM-IV). null when no dispatch is running.  active_dispatch: null,  // events: append-only record of meaningful game events.  // Each entry: { type, route_id, timestamp_utc }  // Types: 'dispatch_start', 'dispatch_complete', 'otium', 'chapter_advance', 'journal_unlock'  // This is the sequencing substrate for OTIVM-IX attestation.  events: [],  token: null,  created_at: null,}export const OTIUM_DURATION_MS = 8000export const OTIUM_BASE_AUT = 1export const MAX_CONCURRENT_PLAYERS = 128