diff --git a/packages/ui/src/runtime-config.ts b/packages/ui/src/runtime-config.ts
index 57c71ec..7f97239 100644
--- a/packages/ui/src/runtime-config.ts
+++ b/packages/ui/src/runtime-config.ts
@@ -20,13 +20,21 @@ function getPlatformType(userAgent: string = navigator.userAgent): string {
   return "Unknown";
 }
 
+// `assetHub` drives the host's dotNS username resolution. Typed as an
+// intersection so this compiles against @parity/truapi-host releases from
+// before the field existed; once the dependency floor includes it, fold the
+// field into the plain ProductRuntimeConfig literal.
+type RuntimeConfigWithAssetHub = ProductRuntimeConfig & {
+  assetHub?: { genesisHash: string | Uint8Array };
+};
+
 // The window origin deliberately plays no part here: `productId` comes
 // solely from the label (or the explicit override).
 export function createTruapiRuntimeConfig(
   label: string,
   productId: string = labelToProductId(label),
 ): ProductRuntimeConfig {
-  return {
+  const config: RuntimeConfigWithAssetHub = {
     productId,
     host: {
       name: "Polkadot Web",
@@ -44,8 +52,12 @@ export function createTruapiRuntimeConfig(
     bulletin: {
       genesisHash: getActiveServicesConfig().bulletin.genesis,
     },
+    assetHub: {
+      genesisHash: getActiveServicesConfig().assethub.genesis,
+    },
     pairing: {
       deeplinkScheme: "polkadotapp",
     },
   };
+  return config;
 }
diff --git a/packages/ui/tests/runtime-config.test.ts b/packages/ui/tests/runtime-config.test.ts
index 3e207cb..a7110fb 100644
--- a/packages/ui/tests/runtime-config.test.ts
+++ b/packages/ui/tests/runtime-config.test.ts
@@ -55,6 +55,9 @@ describe("createTruapiRuntimeConfig", () => {
       bulletin: {
         genesisHash: getActiveServicesConfig().bulletin.genesis,
       },
+      assetHub: {
+        genesisHash: getActiveServicesConfig().assethub.genesis,
+      },
       pairing: {
         deeplinkScheme: "polkadotapp",
       },