From 6b29ef0e2f11fedb0ce0d3d5d32af695de6e43b1 Mon Sep 17 00:00:00 2001
From: CheyneWeb3 <104659633+CheyneWeb3@users.noreply.github.com>
Date: Sat, 15 Aug 2026 18:22:02 +1000
Subject: [PATCH 1/2] Add Haus Chain Testnet

---
 .changeset/bright-houses-build.md     |  5 +++++
 src/chains/definitions/hausTestnet.ts | 25 +++++++++++++++++++++++++
 src/chains/index.ts                   |  1 +
 3 files changed, 31 insertions(+)
 create mode 100644 .changeset/bright-houses-build.md
 create mode 100644 src/chains/definitions/hausTestnet.ts

diff --git a/.changeset/bright-houses-build.md b/.changeset/bright-houses-build.md
new file mode 100644
index 0000000000..2cec808351
--- /dev/null
+++ b/.changeset/bright-houses-build.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Haus Chain Testnet chain.
diff --git a/src/chains/definitions/hausTestnet.ts b/src/chains/definitions/hausTestnet.ts
new file mode 100644
index 0000000000..658c50ed23
--- /dev/null
+++ b/src/chains/definitions/hausTestnet.ts
@@ -0,0 +1,25 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const hausTestnet = /*#__PURE__*/ defineChain({
+  id: 2_443,
+  name: 'Haus Chain Testnet',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'Haus',
+    symbol: 'HAUS',
+  },
+  rpcUrls: {
+    default: {
+      http: ['https://rpc-testnet.hausserver.xyz'],
+      webSocket: ['wss://rpc-testnet.hausserver.xyz'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Haus Chain Testnet Explorer',
+      url: 'https://explorer-testnet.hausserver.xyz',
+      apiUrl: 'https://explorer-testnet.hausserver.xyz/api',
+    },
+  },
+  testnet: true,
+})
diff --git a/src/chains/index.ts b/src/chains/index.ts
index 25e9dd6d4c..32d41acfc6 100644
--- a/src/chains/index.ts
+++ b/src/chains/index.ts
@@ -267,6 +267,7 @@ export { hardhat } from './definitions/hardhat.js'
 export { harmonyOne } from './definitions/harmonyOne.js'
 export { hashkey } from './definitions/hashKeyChain.js'
 export { hashkeyTestnet } from './definitions/hashkeyChainTestnet.js'
+export { hausTestnet } from './definitions/hausTestnet.js'
 export { haustTestnet } from './definitions/haustTestnet.js'
 export { hedera } from './definitions/hedera.js'
 export { hederaPreviewnet } from './definitions/hederaPreviewnet.js'

From a306369a0fbe42ca284ea448a505613fa13928b8 Mon Sep 17 00:00:00 2001
From: jxom <7336481+jxom@users.noreply.github.com>
Date: Mon, 17 Aug 2026 08:25:03 +1000
Subject: [PATCH 2/2] fix(chains): remove invalid haus websocket

---
 src/chains/definitions/hausTestnet.ts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/chains/definitions/hausTestnet.ts b/src/chains/definitions/hausTestnet.ts
index 658c50ed23..ab88c18e27 100644
--- a/src/chains/definitions/hausTestnet.ts
+++ b/src/chains/definitions/hausTestnet.ts
@@ -11,7 +11,6 @@ export const hausTestnet = /*#__PURE__*/ defineChain({
   rpcUrls: {
     default: {
       http: ['https://rpc-testnet.hausserver.xyz'],
-      webSocket: ['wss://rpc-testnet.hausserver.xyz'],
     },
   },
   blockExplorers: {