diff --git a/server/common/constant.js b/server/common/constant.js
index 4c97859..b832186 100644
--- a/server/common/constant.js
+++ b/server/common/constant.js
@@ -5,8 +5,11 @@ const GAMEDB_NAME = 'GameDb0';
 const BCEVENTDB_NAME = 'BcEventDb0';
 const BCNFTDB_NAME = 'BcNftDb0';
 
+const GAME_ID = 2006;
+
 exports.EVENTDB_STATE_PENDING = EVENTDB_STATE_PENDING;
 exports.EVENTDB_STATE_HANDLED = EVENTDB_STATE_HANDLED;
 exports.GAMEDB_NAME = GAMEDB_NAME;
 exports.BCEVENTDB_NAME = BCEVENTDB_NAME;
 exports.BCNFTDB_NAME = BCNFTDB_NAME;
+exports.GAME_ID = GAME_ID;
diff --git a/server/common/contract.js b/server/common/contract.js
index 8481b27..6db8d0f 100644
--- a/server/common/contract.js
+++ b/server/common/contract.js
@@ -1,3 +1,5 @@
+const bcconst = require("common/bcconst");
+
 const CEC_INSTANCE_NAME = 'CEC';
 const CEG_INSTANCE_NAME = 'CEG';
 const HERO_INSTANCE_NAME = 'HERO';
@@ -13,6 +15,30 @@ const BENftMall_INSTANCE_NAME = 'BENftMall';
 const GameItemMarket_INSTANCE_NAME = 'GameItemMarket';
 const GameItemMall_INSTANCE_NAME = 'GameItemMall';
 
+function getNftNameByTokenType(tokenType) {
+  switch (Number(tokenType)) {
+  case bcconst.BC_NFT_HERO:
+    {
+      return HERO_INSTANCE_NAME;
+    }
+    break;
+  case bcconst.BC_NFT_CHIP:
+    {
+      return CHIP_INSTANCE_NAME;
+    }
+    break;
+  case bcconst.BC_NFT_CLAIM_BOX:
+    {
+      return Gacha_INSTANCE_NAME;
+    }
+    break;
+  default:
+    {
+      return '';
+    }
+  }
+}
+
 exports.CEC_INSTANCE_NAME = CEC_INSTANCE_NAME;
 exports.CEG_INSTANCE_NAME = CEG_INSTANCE_NAME;
 exports.HERO_INSTANCE_NAME = HERO_INSTANCE_NAME;
@@ -27,3 +53,5 @@ exports.BENftMarket_INSTANCE_NAME = BENftMarket_INSTANCE_NAME;
 exports.BENftMall_INSTANCE_NAME = BENftMall_INSTANCE_NAME;
 exports.GameItemMarket_INSTANCE_NAME = GameItemMarket_INSTANCE_NAME;
 exports.GameItemMall_INSTANCE_NAME = GameItemMall_INSTANCE_NAME;
+
+exports.getNftNameByTokenType = getNftNameByTokenType;
diff --git a/server/web3sign/blockchain.js b/server/web3sign/blockchain.js
index 665c19f..ab4acb8 100644
--- a/server/web3sign/blockchain.js
+++ b/server/web3sign/blockchain.js
@@ -1,7 +1,6 @@
 const util = require('util');
 const Web3 = require('web3');
 const utils = require('j7/utils');
-const bcutils = require('j7/bcutils');
 const event = require('j7/event');
 const sync = require("j7/sync");
 const log = require("j7/log");
@@ -76,37 +75,9 @@ class BlockChain {
   }
 
   getNftAddress(tokenType) {
-    switch (Number(tokenType)) {
-    case bcutils.HERO_TYPE:
-      {
-        return this.getContractByName('HERO')['address'];
-      }
-      break;
-    case bcutils.EQUIP_TYPE:
-      {
-        return this.getContractByName('WEAPON')['address'];
-      }
-      break;
-    case bcutils.CHIP_TYPE:
-      {
-        return this.getContractByName('CHIP')['address'];
-      }
-      break;
-    case bcutils.FRAGMENT_TYPE:
-      {
-        return this.getContractByName('shard')['address'];
-      }
-      break;
-    case bcutils.CLAIM_BOX_TYPE:
-      {
-        return this.getContractByName('Gacha')['address'];
-      }
-      break;
-    default:
-      {
-        return '';
-      }
-    }
+    const name = contract.getNftNameByTokenType(tokenType);
+    const c = this.getContractByName(name);
+    return c ? c['address'] : '';
   }
 
 }
diff --git a/server/web3sign/controllers/activate721nft.js b/server/web3sign/controllers/activate721nft.js
index 8a2ebce..3c70895 100644
--- a/server/web3sign/controllers/activate721nft.js
+++ b/server/web3sign/controllers/activate721nft.js
@@ -4,16 +4,31 @@ const sigUtil = require('@metamask/eth-sig-util');
 const app = require('j7/app');
 const utils = require('j7/utils');
 const bcutils = require('j7/bcutils');
-const bc = require('../blockchain');
 const metaFactory = require('../metadata/factory');
+const serviceFactory = require('../services/factory');
 
 async function activate721Nft(session) {
   try {
     const account = session.request('account');
+    const netId = session.request('net_id');
     const tokenId = session.request('token_id');
     const tokenType = session.request('token_type');
     const itemUniId = session.request('item_uniid');
     const itemId = session.request('item_id');
+    const bc = serviceFactory.create('BlockChain');
+    {
+      const ret = await bc.init(netId);
+      if (!ret) {
+        session.rspErr(500, 'net_id error');
+        return;
+      }
+    }
+    {
+      if (!bcutils.isValidAddress(account)) {
+        session.rspErr(500, 'account error');
+        return;
+      }
+    }
 
     const nftAddress = bc.getNftAddress(tokenType);
     const userAddress = metaFactory.getUserAddress();