diff --git a/backend/scripts/init-hot-wallet.sh b/backend/scripts/init-hot-wallet.sh
index 986e6c5d..64bc68a5 100644
--- a/backend/scripts/init-hot-wallet.sh
+++ b/backend/scripts/init-hot-wallet.sh
@@ -6,8 +6,8 @@
 # 用途: 创建系统热钱包的 MPC 密钥，用于提现转账
 #
 # 前提条件:
-#   1. mpc-service 正在运行 (默认端口 3006)
-#   2. mpc-system 正在运行且所有 party 已启动
+#   1. mpc-system account-service 正在运行 (默认端口 4000)
+#   2. mpc-system session-coordinator 和 server-party 已启动
 #   3. jq 已安装 (用于解析 JSON)
 #   4. curl 已安装
 #
@@ -18,13 +18,13 @@
 #   -u, --username    热钱包用户名 (默认: system-hot-wallet)
 #   -n, --threshold-n 总 party 数量 (默认: 3)
 #   -t, --threshold-t 签名门限值 (默认: 2)
-#   -h, --host        mpc-service 地址 (默认: http://localhost:3006)
+#   -h, --host        mpc-system account-service 地址 (默认: http://localhost:4000)
 #   -v, --verbose     显示详细调试信息
 #   --help            显示帮助
 #
 # 示例:
 #   ./init-hot-wallet.sh
-#   ./init-hot-wallet.sh -u my-hot-wallet -h http://192.168.1.111:3013
+#   ./init-hot-wallet.sh -u my-hot-wallet -h http://192.168.1.111:4000
 #   ./init-hot-wallet.sh --username prod-hot-wallet --threshold-n 3 --threshold-t 2
 #
 # =============================================================================
@@ -43,7 +43,7 @@ NC='\033[0m' # No Color
 USERNAME="system-hot-wallet"
 THRESHOLD_N=3
 THRESHOLD_T=2
-MPC_HOST="http://localhost:3006"
+MPC_HOST="http://localhost:4000"
 VERBOSE=false
 
 # 日志函数
@@ -99,17 +99,17 @@ check_dependencies() {
 
 # 检查服务连通性
 check_service() {
-  log_info "检查 MPC 服务连通性..."
+  log_info "检查 MPC account-service 连通性..."
 
-  local health_url="$MPC_HOST/api/v1/health"
+  local health_url="$MPC_HOST/health"
   log_debug "请求: GET $health_url"
 
   local response
   response=$(curl -s -w "\n%{http_code}" --connect-timeout 5 "$health_url" 2>/dev/null) || {
-    log_error "无法连接到 MPC 服务: $MPC_HOST"
+    log_error "无法连接到 MPC account-service: $MPC_HOST"
     echo ""
     echo "请检查:"
-    echo "  1. mpc-service 是否正在运行"
+    echo "  1. mpc-system account-service 是否正在运行 (端口 4000)"
     echo "  2. 地址和端口是否正确"
     echo "  3. 网络是否可达"
     exit 1
@@ -122,11 +122,11 @@ check_service() {
   log_debug "响应内容: $body"
 
   if [ "$http_code" != "200" ]; then
-    log_error "MPC 服务响应异常 (HTTP $http_code)"
+    log_error "MPC account-service 响应异常 (HTTP $http_code)"
     exit 1
   fi
 
-  log_success "MPC 服务连接正常"
+  log_success "MPC account-service 连接正常"
 }
 
 # 解析参数
@@ -184,15 +184,17 @@ validate_params() {
 }
 
 # 创建 Keygen 会话
+# 直接调用 mpc-system account-service API (使用 snake_case)
 create_keygen_session() {
   log_info "创建 Keygen 会话..."
 
   local url="$MPC_HOST/api/v1/mpc/keygen"
+  # mpc-system 使用 snake_case: threshold_n, threshold_t, require_delegate
   local payload="{
     \"username\": \"$USERNAME\",
-    \"thresholdN\": $THRESHOLD_N,
-    \"thresholdT\": $THRESHOLD_T,
-    \"requireDelegate\": true
+    \"threshold_n\": $THRESHOLD_N,
+    \"threshold_t\": $THRESHOLD_T,
+    \"require_delegate\": false
   }"
 
   log_debug "请求: POST $url"
@@ -214,17 +216,16 @@ create_keygen_session() {
   fi
 
   # 检查是否有错误
-  local error_msg=$(echo "$KEYGEN_RESPONSE" | jq -r '.message // .error // empty')
+  local error_msg=$(echo "$KEYGEN_RESPONSE" | jq -r '.error // empty')
   if [ -n "$error_msg" ] && [ "$error_msg" != "null" ]; then
-    local status_code=$(echo "$KEYGEN_RESPONSE" | jq -r '.statusCode // empty')
-    if [ -n "$status_code" ] && [ "$status_code" != "200" ] && [ "$status_code" != "201" ]; then
-      log_error "API 错误: $error_msg"
-      exit 1
-    fi
+    log_error "API 错误: $error_msg"
+    exit 1
   fi
 
-  SESSION_ID=$(echo "$KEYGEN_RESPONSE" | jq -r '.sessionId')
+  # mpc-system 返回 snake_case: session_id
+  SESSION_ID=$(echo "$KEYGEN_RESPONSE" | jq -r '.session_id')
   local status=$(echo "$KEYGEN_RESPONSE" | jq -r '.status')
+  local selected_parties=$(echo "$KEYGEN_RESPONSE" | jq -r '.selected_parties | join(", ")')
 
   if [ "$SESSION_ID" == "null" ] || [ -z "$SESSION_ID" ]; then
     log_error "创建 Keygen 会话失败"
@@ -233,8 +234,9 @@ create_keygen_session() {
   fi
 
   log_success "会话已创建"
-  echo "  会话 ID: $SESSION_ID"
-  echo "  状态:    $status"
+  echo "  会话 ID:    $SESSION_ID"
+  echo "  状态:       $status"
+  echo "  选中 Party: $selected_parties"
 }
 
 # 等待 Keygen 完成
@@ -249,13 +251,15 @@ wait_for_keygen() {
   local spinner_idx=0
 
   while [ $attempt -lt $max_attempts ]; do
-    local url="$MPC_HOST/api/v1/mpc/keygen/$SESSION_ID/status"
+    # mpc-system 状态查询 API: /api/v1/mpc/sessions/{sessionId}
+    local url="$MPC_HOST/api/v1/mpc/sessions/$SESSION_ID"
     STATUS_RESPONSE=$(curl -s -X GET "$url" --connect-timeout 10)
 
     log_debug "轮询响应: $STATUS_RESPONSE"
 
     STATUS=$(echo "$STATUS_RESPONSE" | jq -r '.status')
-    PUBLIC_KEY=$(echo "$STATUS_RESPONSE" | jq -r '.publicKey // empty')
+    # mpc-system 返回 snake_case: public_key
+    PUBLIC_KEY=$(echo "$STATUS_RESPONSE" | jq -r '.public_key // empty')
 
     # 只在状态变化时输出
     if [ "$STATUS" != "$last_status" ]; then
@@ -304,9 +308,9 @@ get_public_key() {
 
   if [ -z "$PUBLIC_KEY" ] || [ "$PUBLIC_KEY" == "null" ]; then
     # 再次获取状态以确保拿到公钥
-    local url="$MPC_HOST/api/v1/mpc/keygen/$SESSION_ID/status"
+    local url="$MPC_HOST/api/v1/mpc/sessions/$SESSION_ID"
     STATUS_RESPONSE=$(curl -s -X GET "$url")
-    PUBLIC_KEY=$(echo "$STATUS_RESPONSE" | jq -r '.publicKey')
+    PUBLIC_KEY=$(echo "$STATUS_RESPONSE" | jq -r '.public_key')
   fi
 
   if [ -z "$PUBLIC_KEY" ] || [ "$PUBLIC_KEY" == "null" ]; then