diff --git a/backend/services/identity-service/.claude/settings.local.json b/backend/services/identity-service/.claude/settings.local.json
index f485dfed..5c8e14c3 100644
--- a/backend/services/identity-service/.claude/settings.local.json
+++ b/backend/services/identity-service/.claude/settings.local.json
@@ -33,7 +33,9 @@
       "Bash(git -C \"c:\\Users\\dong\\Desktop\\rwadurian\" status)",
       "Bash(git -C \"c:\\Users\\dong\\Desktop\\rwadurian\" commit -m \"$(cat <<''EOF''\nfix(mpc-service): change healthcheck from wget to curl\n\nDocker compose healthcheck was using wget which is not installed in the\nnode:20-slim image. Changed to use curl and corrected endpoint path.\n\n🤖 Generated with [Claude Code](https://claude.com/claude-code)\n\nCo-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>\nEOF\n)\")",
       "Bash(git -C \"c:\\Users\\dong\\Desktop\\rwadurian\" push)",
-      "Bash(git -C \"c:\\Users\\dong\\Desktop\\rwadurian\" show cf308ef --stat)"
+      "Bash(git -C \"c:\\Users\\dong\\Desktop\\rwadurian\" show cf308ef --stat)",
+      "Bash(git -C \"c:\\Users\\dong\\Desktop\\rwadurian\" commit -m \"$(cat <<''EOF''\nrefactor: move mnemonic verification from identity-service to blockchain-service\n\n- Add /internal/verify-mnemonic API to blockchain-service\n- Add /internal/derive-from-mnemonic API to blockchain-service  \n- Create MnemonicDerivationAdapter for BIP39 mnemonic address derivation\n- Create BlockchainClientService in identity-service to call blockchain-service\n- Remove WalletGeneratorService from identity-service\n- Update recover-by-mnemonic handler to use blockchain-service API\n\nThis enforces proper domain boundaries - all blockchain/crypto operations\nare now handled by blockchain-service.\n\n🤖 Generated with [Claude Code](https://claude.com/claude-code)\n\nCo-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>\nEOF\n)\")",
+      "Bash(git -C \"c:\\Users\\dong\\Desktop\\rwadurian\" commit -m \"fix(identity-service): remove WalletGeneratorService from app.module.ts\")"
     ],
     "deny": [],
     "ask": []
diff --git a/backend/services/identity-service/src/app.module.ts b/backend/services/identity-service/src/app.module.ts
index c7e7f5da..9e927b98 100644
--- a/backend/services/identity-service/src/app.module.ts
+++ b/backend/services/identity-service/src/app.module.ts
@@ -18,7 +18,7 @@ import { TokenService } from '@/application/services/token.service';
 
 // Domain Services
 import {
-  AccountSequenceGeneratorService, UserValidatorService, WalletGeneratorService,
+  AccountSequenceGeneratorService, UserValidatorService,
 } from '@/domain/services';
 import { USER_ACCOUNT_REPOSITORY } from '@/domain/repositories/user-account.repository.interface';
 import { MPC_KEY_SHARE_REPOSITORY } from '@/domain/repositories/mpc-key-share.repository.interface';
@@ -31,8 +31,8 @@ import { RedisService } from '@/infrastructure/redis/redis.service';
 import { EventPublisherService } from '@/infrastructure/kafka/event-publisher.service';
 import { MpcEventConsumerService } from '@/infrastructure/kafka/mpc-event-consumer.service';
 import { SmsService } from '@/infrastructure/external/sms/sms.service';
+import { BlockchainClientService } from '@/infrastructure/external/blockchain/blockchain-client.service';
 import { MpcClientService, MpcWalletService } from '@/infrastructure/external/mpc';
-import { WalletGeneratorServiceImpl } from '@/infrastructure/external/blockchain/wallet-generator.service.impl';
 
 // Shared
 import { GlobalExceptionFilter, TransformInterceptor } from '@/shared/filters/global-exception.filter';
@@ -42,6 +42,7 @@ import { JwtAuthGuard } from '@/shared/guards/jwt-auth.guard';
 @Global()
 @Module({
   imports: [
+    ConfigModule,
     HttpModule.register({
       timeout: 300000,
       maxRedirects: 5,
@@ -55,9 +56,7 @@ import { JwtAuthGuard } from '@/shared/guards/jwt-auth.guard';
     SmsService,
     MpcClientService,
     MpcWalletService,
-    // WalletGeneratorService 抽象类由 WalletGeneratorServiceImpl 实现
-    WalletGeneratorServiceImpl,
-    { provide: WalletGeneratorService, useExisting: WalletGeneratorServiceImpl },
+    BlockchainClientService,
     { provide: MPC_KEY_SHARE_REPOSITORY, useClass: MpcKeyShareRepositoryImpl },
   ],
   exports: [
@@ -68,7 +67,7 @@ import { JwtAuthGuard } from '@/shared/guards/jwt-auth.guard';
     SmsService,
     MpcClientService,
     MpcWalletService,
-    WalletGeneratorService,
+    BlockchainClientService,
     MPC_KEY_SHARE_REPOSITORY,
   ],
 })
@@ -81,13 +80,11 @@ export class InfrastructureModule {}
     { provide: USER_ACCOUNT_REPOSITORY, useClass: UserAccountRepositoryImpl },
     AccountSequenceGeneratorService,
     UserValidatorService,
-    // WalletGeneratorService 由 InfrastructureModule 提供
   ],
   exports: [
     USER_ACCOUNT_REPOSITORY,
     AccountSequenceGeneratorService,
     UserValidatorService,
-    // WalletGeneratorService 由 InfrastructureModule 导出
   ],
 })
 export class DomainModule {}