Checkpoint: v13: 自研跨链桥完成 - 完全移除Li.Fi第三方协议，实现NAC原生跨链购买系统。支持BSC/ETH/Polygon/Arbitrum/Avalanche五条链USDT购买XIC，更新官方收款地址，后端多链监听器，My Transactions查询功能全部测试通过。

2026-03-10 06:20:18 -04:00 · 2026-03-10 06:20:18 -04:00 · 0659cd71cb
parent 1576303898
commit 0659cd71cb
15 changed files with 2529 additions and 1061 deletions
--- a/.manus/db/db-query-1773136418178.json
+++ b/.manus/db/db-query-1773136418178.json
@ -0,0 +1,74 @@
+{
+  "query": "ALTER TABLE bridge_intents MODIFY COLUMN senderAddress VARCHAR(64) NULL;\nDESCRIBE bridge_intents;",
+  "command": "mysql --batch --raw --column-names --default-character-set=utf8mb4 --host gateway03.us-east-1.prod.aws.tidbcloud.com --port 4000 --user 3Bq4cgN2KNKQqNu.8160cd2033e0 --database Ngki3MumDNGduV3xJt3mga --execute ALTER TABLE bridge_intents MODIFY COLUMN senderAddress VARCHAR(64) NULL;\nDESCRIBE bridge_intents;",
+  "rows": [
+    {
+      "Field": "id",
+      "Type": "int",
+      "Null": "NO",
+      "Key": "PRI",
+      "Default": "NULL",
+      "Extra": "auto_increment"
+    },
+    {
+      "Field": "fromChainId",
+      "Type": "int",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "senderAddress",
+      "Type": "varchar(64)",
+      "Null": "YES",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "xicReceiveAddress",
+      "Type": "varchar(64)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "expectedUsdt",
+      "Type": "decimal(20,6)",
+      "Null": "YES",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "matched",
+      "Type": "tinyint(1)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "0",
+      "Extra": ""
+    },
+    {
+      "Field": "matchedOrderId",
+      "Type": "int",
+      "Null": "YES",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "createdAt",
+      "Type": "timestamp",
+      "Null": "NO",
+      "Key": "",
+      "Default": "CURRENT_TIMESTAMP",
+      "Extra": ""
+    }
+  ],
+  "messages": [],
+  "stdout": "Field\tType\tNull\tKey\tDefault\tExtra\nid\tint\tNO\tPRI\tNULL\tauto_increment\nfromChainId\tint\tNO\t\tNULL\t\nsenderAddress\tvarchar(64)\tYES\t\tNULL\t\nxicReceiveAddress\tvarchar(64)\tNO\t\tNULL\t\nexpectedUsdt\tdecimal(20,6)\tYES\t\tNULL\t\nmatched\ttinyint(1)\tNO\t\t0\t\nmatchedOrderId\tint\tYES\t\tNULL\t\ncreatedAt\ttimestamp\tNO\t\tCURRENT_TIMESTAMP\t\n",
+  "stderr": "",
+  "execution_time_ms": 1992
+}
--- a/client/src/lib/contracts.ts
+++ b/client/src/lib/contracts.ts
@ -24,7 +24,7 @@ export const CONTRACTS = {
    rpcUrl: "https://eth.llamarpc.com",
    explorerUrl: "https://etherscan.io",
    nativeCurrency: { name: "Ether", symbol: "ETH", decimals: 18 },
-    presale: "0x85AB2F2d9f7ca7ecB272b5E8726c70f3fd45D1E3",
+    presale: "0x43DAb577f3279e11D311E7d628C6201d893A9Aa3",
    token: "", // XIC not yet on ETH
    usdt: "0xdAC17F958D2ee523a2206206994597C13D831ec7",
  },
@ -37,7 +37,7 @@ export const CONTRACTS = {
    token: "",
    usdt: "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t",
    // Receiving wallet for TRC20 USDT
-    receivingWallet: "TYASr5UV6HEcXatwdFyffSGZszd6Gkjkvb",
+    receivingWallet: "TWc2ugYBFN5aSoimAh4qGt9oMyket6NYZp",
  },
 } as const;

--- a/client/src/pages/Bridge.tsx
+++ b/client/src/pages/Bridge.tsx
--- a/deploy-logs/v13-deploy-log.md
+++ b/deploy-logs/v13-deploy-log.md
@ -0,0 +1,95 @@
+# v13 部署日志
+
+**部署时间：** 2026-03-10  
+**部署人员：** Manus AI  
+**部署服务器：** AI服务器 43.224.155.27:22000  
+**部署目录：** /www/wwwroot/nac-presale-test/  
+**PM2进程：** nac-presale-test (id=8)  
+**服务端口：** 3100  
+**域名：** https://pre-sale.newassetchain.io  
+
+---
+
+## 本次更新内容
+
+### 1. 自研跨链桥（完全移除Li.Fi第三方协议）
+
+**背景：** 之前Bridge页面使用Li.Fi协议，由于XIC代币尚未在任何DEX上市，Li.Fi无法获取报价，Bridge功能完全无法使用。
+
+**解决方案：** 完全移除Li.Fi，改为NAC自研跨链桥：
+- 用户选择源链（BSC/ETH/Polygon/Arbitrum/Avalanche）
+- 系统显示对应链的官方USDT收款地址
+- 用户发送USDT后点击"I Have Sent USDT"注册意向
+- 后端监听器自动监控各链的USDT转入
+- 确认收款后按$0.02/XIC预售价分发XIC代币
+
+### 2. 官方收款地址更新
+
+| 网络 | 地址 |
+|------|------|
+| TRC20/USDT (TRON) | TWc2ugYBFN5aSoimAh4qGt9oMyket6NYZp |
+| ERC20/USDT (Ethereum) | 0x43DAb577f3279e11D311E7d628C6201d893A9Aa3 |
+| BEP20/USDT (BSC) | 0x43DAb577f3279e11D311E7d628C6201d893A9Aa3 |
+| Polygon USDT | 0x43DAb577f3279e11D311E7d628C6201d893A9Aa3 |
+| Arbitrum USDT | 0x43DAb577f3279e11D311E7d628C6201d893A9Aa3 |
+| Avalanche USDT | 0x43DAb577f3279e11D311E7d628C6201d893A9Aa3 |
+
+### 3. 新增文件
+
+- `server/bridgeMonitor.ts` - 多链USDT转入监听器（BSC/ETH/Polygon/Arbitrum/Avalanche）
+- `server/_core/index.ts` - 添加Bridge监听器启动入口
+
+### 4. 数据库变更
+
+新增表：
+- `bridge_intents` - 用户购买意向记录（注册后等待确认）
+- `bridge_orders` - 已确认的跨链购买订单
+
+修改表：
+- `bridge_orders.status` - 添加 `distributed` 枚举值
+
+---
+
+## 测试结果
+
+| 功能 | 状态 | 备注 |
+|------|------|------|
+| Bridge页面加载 | ✅ 正常 | |
+| 5条链选择（BSC/ETH/POLY/ARB/AVAX） | ✅ 正常 | |
+| Gas费说明随链切换 | ✅ 正常 | |
+| 收款地址显示 | ✅ 正常 | 官方地址 |
+| USDT金额输入 | ✅ 正常 | |
+| XIC计算（$0.02/XIC） | ✅ 正常 | 100 USDT = 5,000 XIC |
+| 复制收款地址 | ✅ 正常 | |
+| "I Have Sent USDT"提交 | ✅ 正常 | 注册意向到数据库 |
+| 成功提示显示 | ✅ 正常 | 绿色成功框 |
+| My Transactions查询 | ✅ 正常 | 显示待处理订单 |
+| 主页TRC20收款地址 | ✅ 正常 | TWc2ugYBFN5aSoimAh4qGt9oMyket6NYZp |
+| 主页链上数据 | ✅ 正常 | $9,900 Raised, 495K Tokens Sold |
+
+---
+
+## 后台管理员信息
+
+- **后台管理员账号：** 通过Manus OAuth登录
+- **数据库用户：** nac_presale / NACpresale2026!
+- **数据库名：** nac_presale
+- **MySQL连接：** 127.0.0.1:3306（仅本地）
+- **宝塔面板：** http://43.224.155.27:12/btwest（cproot/vajngkvf）
+- **PM2进程名：** nac-presale-test（id=8）
+
+---
+
+## 待优化事项
+
+1. Polygon/Arbitrum/Avalanche 链的 USDT 合约地址需要配置（目前使用通用ERC20地址）
+2. 钱包连接功能（MetaMask）需要在有MetaMask扩展的浏览器中验证
+3. Bridge监听器的RPC节点可考虑使用付费节点提高稳定性
+
+---
+
+## Git同步
+
+- **Gitea仓库：** https://git.newassetchain.io/nacadmin/xic-presale
+- **分支：** main
+- **提交信息：** v13: 自研跨链桥，移除Li.Fi，更新官方收款地址
--- a/drizzle/0006_colossal_unicorn.sql
+++ b/drizzle/0006_colossal_unicorn.sql
@ -0,0 +1,21 @@
+CREATE TABLE `bridge_intents` (
+	`id` int AUTO_INCREMENT NOT NULL,
+	`fromChainId` int NOT NULL,
+	`senderAddress` varchar(64) NOT NULL,
+	`xicReceiveAddress` varchar(64) NOT NULL,
+	`expectedUsdt` decimal(20,6),
+	`matched` boolean NOT NULL DEFAULT false,
+	`matchedOrderId` int,
+	`createdAt` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `bridge_intents_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+ALTER TABLE `bridge_orders` MODIFY COLUMN `toChainId` int NOT NULL DEFAULT 56;--> statement-breakpoint
+ALTER TABLE `bridge_orders` MODIFY COLUMN `toToken` varchar(32) NOT NULL DEFAULT 'XIC';--> statement-breakpoint
+ALTER TABLE `bridge_orders` MODIFY COLUMN `status` enum('pending','confirmed','distributed','failed') NOT NULL DEFAULT 'pending';--> statement-breakpoint
+ALTER TABLE `bridge_orders` ADD `xicReceiveAddress` varchar(64);--> statement-breakpoint
+ALTER TABLE `bridge_orders` ADD `confirmedAt` timestamp;--> statement-breakpoint
+ALTER TABLE `bridge_orders` ADD `distributedAt` timestamp;--> statement-breakpoint
+ALTER TABLE `bridge_orders` ADD `distributeTxHash` varchar(128);--> statement-breakpoint
+ALTER TABLE `bridge_orders` ADD `blockNumber` bigint;--> statement-breakpoint
+ALTER TABLE `bridge_orders` ADD `updatedAt` timestamp DEFAULT (now()) NOT NULL ON UPDATE CURRENT_TIMESTAMP;
--- a/drizzle/0007_wide_menace.sql
+++ b/drizzle/0007_wide_menace.sql
@ -0,0 +1 @@
+ALTER TABLE `bridge_intents` MODIFY COLUMN `senderAddress` varchar(64);
--- a/drizzle/meta/0006_snapshot.json
+++ b/drizzle/meta/0006_snapshot.json
@ -0,0 +1,653 @@
+{
+  "version": "5",
+  "dialect": "mysql",
+  "id": "b1822efc-d652-4957-970f-f71b733359b6",
+  "prevId": "f2da11d5-2ee3-40ce-9180-11a9480a5b91",
+  "tables": {
+    "bridge_intents": {
+      "name": "bridge_intents",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "fromChainId": {
+          "name": "fromChainId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "senderAddress": {
+          "name": "senderAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "xicReceiveAddress": {
+          "name": "xicReceiveAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expectedUsdt": {
+          "name": "expectedUsdt",
+          "type": "decimal(20,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "matched": {
+          "name": "matched",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "matchedOrderId": {
+          "name": "matchedOrderId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "bridge_intents_id": {
+          "name": "bridge_intents_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "bridge_orders": {
+      "name": "bridge_orders",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "txHash": {
+          "name": "txHash",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "walletAddress": {
+          "name": "walletAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "fromChainId": {
+          "name": "fromChainId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "fromToken": {
+          "name": "fromToken",
+          "type": "varchar(32)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "fromAmount": {
+          "name": "fromAmount",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "toChainId": {
+          "name": "toChainId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 56
+        },
+        "toToken": {
+          "name": "toToken",
+          "type": "varchar(32)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'XIC'"
+        },
+        "toAmount": {
+          "name": "toAmount",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "xicReceiveAddress": {
+          "name": "xicReceiveAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "enum('pending','confirmed','distributed','failed')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "confirmedAt": {
+          "name": "confirmedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "distributedAt": {
+          "name": "distributedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "distributeTxHash": {
+          "name": "distributeTxHash",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "blockNumber": {
+          "name": "blockNumber",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "bridge_orders_id": {
+          "name": "bridge_orders_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "bridge_orders_txHash_unique": {
+          "name": "bridge_orders_txHash_unique",
+          "columns": [
+            "txHash"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "presale_config": {
+      "name": "presale_config",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "key": {
+          "name": "key",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "value": {
+          "name": "value",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "label": {
+          "name": "label",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "varchar(256)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "type": {
+          "name": "type",
+          "type": "varchar(32)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'text'"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "presale_config_id": {
+          "name": "presale_config_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "presale_config_key_unique": {
+          "name": "presale_config_key_unique",
+          "columns": [
+            "key"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "presale_stats_cache": {
+      "name": "presale_stats_cache",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "chain": {
+          "name": "chain",
+          "type": "varchar(16)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "usdtRaised": {
+          "name": "usdtRaised",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'0'"
+        },
+        "tokensSold": {
+          "name": "tokensSold",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'0'"
+        },
+        "weiRaised": {
+          "name": "weiRaised",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'0'"
+        },
+        "lastUpdated": {
+          "name": "lastUpdated",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "presale_stats_cache_id": {
+          "name": "presale_stats_cache_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "trc20_intents": {
+      "name": "trc20_intents",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "tronAddress": {
+          "name": "tronAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "evmAddress": {
+          "name": "evmAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expectedUsdt": {
+          "name": "expectedUsdt",
+          "type": "decimal(20,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "matched": {
+          "name": "matched",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "matchedPurchaseId": {
+          "name": "matchedPurchaseId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "trc20_intents_id": {
+          "name": "trc20_intents_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "trc20_purchases": {
+      "name": "trc20_purchases",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "txHash": {
+          "name": "txHash",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "fromAddress": {
+          "name": "fromAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "usdtAmount": {
+          "name": "usdtAmount",
+          "type": "decimal(20,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "xicAmount": {
+          "name": "xicAmount",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "blockNumber": {
+          "name": "blockNumber",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "enum('pending','confirmed','distributed','failed')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "distributedAt": {
+          "name": "distributedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "distributeTxHash": {
+          "name": "distributeTxHash",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "evmAddress": {
+          "name": "evmAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "trc20_purchases_id": {
+          "name": "trc20_purchases_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "trc20_purchases_txHash_unique": {
+          "name": "trc20_purchases_txHash_unique",
+          "columns": [
+            "txHash"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "users": {
+      "name": "users",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "openId": {
+          "name": "openId",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "email": {
+          "name": "email",
+          "type": "varchar(320)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "loginMethod": {
+          "name": "loginMethod",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "role": {
+          "name": "role",
+          "type": "enum('user','admin')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'user'"
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        },
+        "lastSignedIn": {
+          "name": "lastSignedIn",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "users_id": {
+          "name": "users_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "users_openId_unique": {
+          "name": "users_openId_unique",
+          "columns": [
+            "openId"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    }
+  },
+  "views": {},
+  "_meta": {
+    "schemas": {},
+    "tables": {},
+    "columns": {}
+  },
+  "internal": {
+    "tables": {},
+    "indexes": {}
+  }
+}
--- a/drizzle/meta/0007_snapshot.json
+++ b/drizzle/meta/0007_snapshot.json
@ -0,0 +1,653 @@
+{
+  "version": "5",
+  "dialect": "mysql",
+  "id": "7e9d948e-d569-4194-bb75-6219b837045e",
+  "prevId": "b1822efc-d652-4957-970f-f71b733359b6",
+  "tables": {
+    "bridge_intents": {
+      "name": "bridge_intents",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "fromChainId": {
+          "name": "fromChainId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "senderAddress": {
+          "name": "senderAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "xicReceiveAddress": {
+          "name": "xicReceiveAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expectedUsdt": {
+          "name": "expectedUsdt",
+          "type": "decimal(20,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "matched": {
+          "name": "matched",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "matchedOrderId": {
+          "name": "matchedOrderId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "bridge_intents_id": {
+          "name": "bridge_intents_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "bridge_orders": {
+      "name": "bridge_orders",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "txHash": {
+          "name": "txHash",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "walletAddress": {
+          "name": "walletAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "fromChainId": {
+          "name": "fromChainId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "fromToken": {
+          "name": "fromToken",
+          "type": "varchar(32)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "fromAmount": {
+          "name": "fromAmount",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "toChainId": {
+          "name": "toChainId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 56
+        },
+        "toToken": {
+          "name": "toToken",
+          "type": "varchar(32)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'XIC'"
+        },
+        "toAmount": {
+          "name": "toAmount",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "xicReceiveAddress": {
+          "name": "xicReceiveAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "enum('pending','confirmed','distributed','failed')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "confirmedAt": {
+          "name": "confirmedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "distributedAt": {
+          "name": "distributedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "distributeTxHash": {
+          "name": "distributeTxHash",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "blockNumber": {
+          "name": "blockNumber",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "bridge_orders_id": {
+          "name": "bridge_orders_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "bridge_orders_txHash_unique": {
+          "name": "bridge_orders_txHash_unique",
+          "columns": [
+            "txHash"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "presale_config": {
+      "name": "presale_config",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "key": {
+          "name": "key",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "value": {
+          "name": "value",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "label": {
+          "name": "label",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "varchar(256)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "type": {
+          "name": "type",
+          "type": "varchar(32)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'text'"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "presale_config_id": {
+          "name": "presale_config_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "presale_config_key_unique": {
+          "name": "presale_config_key_unique",
+          "columns": [
+            "key"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "presale_stats_cache": {
+      "name": "presale_stats_cache",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "chain": {
+          "name": "chain",
+          "type": "varchar(16)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "usdtRaised": {
+          "name": "usdtRaised",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'0'"
+        },
+        "tokensSold": {
+          "name": "tokensSold",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'0'"
+        },
+        "weiRaised": {
+          "name": "weiRaised",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'0'"
+        },
+        "lastUpdated": {
+          "name": "lastUpdated",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "presale_stats_cache_id": {
+          "name": "presale_stats_cache_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "trc20_intents": {
+      "name": "trc20_intents",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "tronAddress": {
+          "name": "tronAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "evmAddress": {
+          "name": "evmAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expectedUsdt": {
+          "name": "expectedUsdt",
+          "type": "decimal(20,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "matched": {
+          "name": "matched",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "matchedPurchaseId": {
+          "name": "matchedPurchaseId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "trc20_intents_id": {
+          "name": "trc20_intents_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "trc20_purchases": {
+      "name": "trc20_purchases",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "txHash": {
+          "name": "txHash",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "fromAddress": {
+          "name": "fromAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "usdtAmount": {
+          "name": "usdtAmount",
+          "type": "decimal(20,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "xicAmount": {
+          "name": "xicAmount",
+          "type": "decimal(30,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "blockNumber": {
+          "name": "blockNumber",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "enum('pending','confirmed','distributed','failed')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "distributedAt": {
+          "name": "distributedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "distributeTxHash": {
+          "name": "distributeTxHash",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "evmAddress": {
+          "name": "evmAddress",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "trc20_purchases_id": {
+          "name": "trc20_purchases_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "trc20_purchases_txHash_unique": {
+          "name": "trc20_purchases_txHash_unique",
+          "columns": [
+            "txHash"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "users": {
+      "name": "users",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "openId": {
+          "name": "openId",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "email": {
+          "name": "email",
+          "type": "varchar(320)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "loginMethod": {
+          "name": "loginMethod",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "role": {
+          "name": "role",
+          "type": "enum('user','admin')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'user'"
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        },
+        "lastSignedIn": {
+          "name": "lastSignedIn",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "users_id": {
+          "name": "users_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "users_openId_unique": {
+          "name": "users_openId_unique",
+          "columns": [
+            "openId"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    }
+  },
+  "views": {},
+  "_meta": {
+    "schemas": {},
+    "tables": {},
+    "columns": {}
+  },
+  "internal": {
+    "tables": {},
+    "indexes": {}
+  }
+}
--- a/drizzle/meta/_journal.json
+++ b/drizzle/meta/_journal.json
@ -43,6 +43,20 @@
      "when": 1773124399358,
      "tag": "0005_certain_betty_ross",
      "breakpoints": true
+    },
+    {
+      "idx": 6,
+      "version": "5",
+      "when": 1773135614044,
+      "tag": "0006_colossal_unicorn",
+      "breakpoints": true
+    },
+    {
+      "idx": 7,
+      "version": "5",
+      "when": 1773136228889,
+      "tag": "0007_wide_menace",
+      "breakpoints": true
    }
  ]
 }
--- a/drizzle/schema.ts
+++ b/drizzle/schema.ts
@ -97,20 +97,44 @@ export const presaleConfig = mysqlTable("presale_config", {

 export type PresaleConfig = typeof presaleConfig.$inferSelect;
 export type InsertPresaleConfig = typeof presaleConfig.$inferInsert;
-// Cross-chain bridge orders — recorded when user completes a Li.Fi cross-chain purchase
+// Cross-chain bridge orders — NAC self-developed cross-chain bridge
+// User sends USDT on any supported chain to our receiving address
+// Backend monitors and records confirmed transfers, then distributes XIC
 export const bridgeOrders = mysqlTable("bridge_orders", {
  id: int("id").autoincrement().primaryKey(),
  txHash: varchar("txHash", { length: 128 }).notNull().unique(),
-  walletAddress: varchar("walletAddress", { length: 64 }).notNull(),
+  walletAddress: varchar("walletAddress", { length: 64 }).notNull(), // sender wallet on source chain
  fromChainId: int("fromChainId").notNull(),
  fromToken: varchar("fromToken", { length: 32 }).notNull(),
-  fromAmount: decimal("fromAmount", { precision: 30, scale: 6 }).notNull(),
-  toChainId: int("toChainId").notNull(),
-  toToken: varchar("toToken", { length: 32 }).notNull(),
-  toAmount: decimal("toAmount", { precision: 30, scale: 6 }).notNull(),
-  status: mysqlEnum("status", ["pending", "completed", "failed"]).default("completed").notNull(),
+  fromAmount: decimal("fromAmount", { precision: 30, scale: 6 }).notNull(), // USDT amount sent
+  toChainId: int("toChainId").notNull().default(56), // always BSC for XIC
+  toToken: varchar("toToken", { length: 32 }).notNull().default("XIC"),
+  toAmount: decimal("toAmount", { precision: 30, scale: 6 }).notNull(), // XIC amount to distribute
+  xicReceiveAddress: varchar("xicReceiveAddress", { length: 64 }), // BSC address to receive XIC
+  status: mysqlEnum("status", ["pending", "confirmed", "distributed", "failed"]).default("pending").notNull(),
+  confirmedAt: timestamp("confirmedAt"),
+  distributedAt: timestamp("distributedAt"),
+  distributeTxHash: varchar("distributeTxHash", { length: 128 }),
+  blockNumber: bigint("blockNumber", { mode: "number" }),
  createdAt: timestamp("createdAt").defaultNow().notNull(),
+  updatedAt: timestamp("updatedAt").defaultNow().onUpdateNow().notNull(),
 });

 export type BridgeOrder = typeof bridgeOrders.$inferSelect;
 export type InsertBridgeOrder = typeof bridgeOrders.$inferInsert;
+
+// Bridge deposit intents — user pre-registers before sending USDT
+// Helps backend match incoming transfers to the correct XIC receive address
+export const bridgeIntents = mysqlTable("bridge_intents", {
+  id: int("id").autoincrement().primaryKey(),
+  fromChainId: int("fromChainId").notNull(),
+  senderAddress: varchar("senderAddress", { length: 64 }), // sender on source chain (optional, filled when wallet connected)
+  xicReceiveAddress: varchar("xicReceiveAddress", { length: 64 }).notNull(), // BSC address to receive XIC
+  expectedUsdt: decimal("expectedUsdt", { precision: 20, scale: 6 }), // expected USDT amount
+  matched: boolean("matched").default(false).notNull(),
+  matchedOrderId: int("matchedOrderId"),
+  createdAt: timestamp("createdAt").defaultNow().notNull(),
+});
+
+export type BridgeIntent = typeof bridgeIntents.$inferSelect;
+export type InsertBridgeIntent = typeof bridgeIntents.$inferInsert;
--- a/server/_core/index.ts
+++ b/server/_core/index.ts
@ -8,6 +8,7 @@ import { appRouter } from "../routers";
 import { createContext } from "./context";
 import { serveStatic, setupVite } from "./vite";
 import { startTRC20Monitor } from "../trc20Monitor";
+import { startBridgeMonitor } from "../bridgeMonitor";

 function isPortAvailable(port: number): Promise<boolean> {
  return new Promise(resolve => {
@ -64,6 +65,9 @@ async function startServer() {

  // Start TRC20 monitor in background
  startTRC20Monitor().catch(e => console.error("[TRC20Monitor] Start error:", e));
+
+  // Start Bridge monitor (multi-chain USDT deposit listener)
+  startBridgeMonitor();
 }

 startServer().catch(console.error);
--- a/server/bridgeMonitor.ts
+++ b/server/bridgeMonitor.ts
@ -0,0 +1,285 @@
+/**
+ * NAC Cross-Chain Bridge Monitor
+ * Self-developed bridge: monitors USDT transfers on BSC/ETH/Polygon/Arbitrum/Avalanche
+ * When user sends USDT to our receiving address, we record the order and distribute XIC
+ */
+
+import { getDb } from "./db";
+import { bridgeOrders, bridgeIntents } from "../drizzle/schema";
+import { eq, and, desc } from "drizzle-orm";
+
+// ─── Presale Config ───────────────────────────────────────────────────────────
+export const XIC_PRICE_USDT = 0.02; // $0.02 per XIC
+
+// ─── Chain Configs ────────────────────────────────────────────────────────────
+export interface ChainConfig {
+  chainId: number;
+  name: string;
+  symbol: string;        // native token symbol (BNB, ETH, MATIC, AVAX)
+  icon: string;
+  color: string;
+  usdtAddress: string;   // USDT contract on this chain
+  receivingAddress: string; // Our USDT receiving address on this chain
+  rpcUrl: string;
+  explorerUrl: string;
+  explorerTxPath: string; // e.g. /tx/
+  decimals: number;      // USDT decimals (6 for most, 18 for BSC)
+}
+
+export const BRIDGE_CHAINS: ChainConfig[] = [
+  {
+    chainId: 56,
+    name: "BSC",
+    symbol: "BNB",
+    icon: "🟡",
+    color: "#F0B90B",
+    usdtAddress: "0x55d398326f99059fF775485246999027B3197955",
+    receivingAddress: process.env.BRIDGE_BSC_ADDRESS || "0x43DAb577f3279e11D311E7d628C6201d893A9Aa3",
+    rpcUrl: "https://bsc-dataseed1.binance.org/",
+    explorerUrl: "https://bscscan.com",
+    explorerTxPath: "/tx/",
+    decimals: 18, // BSC USDT is 18 decimals
+  },
+  {
+    chainId: 1,
+    name: "Ethereum",
+    symbol: "ETH",
+    icon: "🔵",
+    color: "#627EEA",
+    usdtAddress: "0xdAC17F958D2ee523a2206206994597C13D831ec7",
+    receivingAddress: process.env.BRIDGE_ETH_ADDRESS || "0x43DAb577f3279e11D311E7d628C6201d893A9Aa3",
+    rpcUrl: "https://ethereum.publicnode.com",
+    explorerUrl: "https://etherscan.io",
+    explorerTxPath: "/tx/",
+    decimals: 6, // ETH USDT is 6 decimals
+  },
+  {
+    chainId: 137,
+    name: "Polygon",
+    symbol: "MATIC",
+    icon: "🟣",
+    color: "#8247E5",
+    usdtAddress: "0xc2132D05D31c914a87C6611C10748AEb04B58e8F",
+    receivingAddress: process.env.BRIDGE_POLYGON_ADDRESS || "0x43DAb577f3279e11D311E7d628C6201d893A9Aa3",
+    rpcUrl: "https://polygon-rpc.com/",
+    explorerUrl: "https://polygonscan.com",
+    explorerTxPath: "/tx/",
+    decimals: 6,
+  },
+  {
+    chainId: 42161,
+    name: "Arbitrum",
+    symbol: "ETH",
+    icon: "🔷",
+    color: "#28A0F0",
+    usdtAddress: "0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9",
+    receivingAddress: process.env.BRIDGE_ARB_ADDRESS || "0x43DAb577f3279e11D311E7d628C6201d893A9Aa3",
+    rpcUrl: "https://arb1.arbitrum.io/rpc",
+    explorerUrl: "https://arbiscan.io",
+    explorerTxPath: "/tx/",
+    decimals: 6,
+  },
+  {
+    chainId: 43114,
+    name: "Avalanche",
+    symbol: "AVAX",
+    icon: "🔴",
+    color: "#E84142",
+    usdtAddress: "0x9702230A8Ea53601f5cD2dc00fDBc13d4dF4A8c7",
+    receivingAddress: process.env.BRIDGE_AVAX_ADDRESS || "0x43DAb577f3279e11D311E7d628C6201d893A9Aa3",
+    rpcUrl: "https://api.avax.network/ext/bc/C/rpc",
+    explorerUrl: "https://snowtrace.io",
+    explorerTxPath: "/tx/",
+    decimals: 6,
+  },
+];
+
+// ─── ERC-20 Transfer event ABI ────────────────────────────────────────────────
+// Transfer(address indexed from, address indexed to, uint256 value)
+const TRANSFER_TOPIC = "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef";
+
+// ─── Fetch USDT transfers to our address via eth_getLogs ──────────────────────
+async function fetchUsdtTransfers(chain: ChainConfig, fromBlock: string = "latest"): Promise<Array<{
+  txHash: string;
+  fromAddress: string;
+  toAddress: string;
+  amount: number; // in USDT (human-readable)
+  blockNumber: number;
+}>> {
+  try {
+    // Pad address to 32 bytes for topic matching
+    const paddedTo = "0x000000000000000000000000" + chain.receivingAddress.slice(2).toLowerCase();
+
+    const payload = {
+      jsonrpc: "2.0",
+      id: 1,
+      method: "eth_getLogs",
+      params: [{
+        fromBlock: fromBlock === "latest" ? "latest" : fromBlock,
+        toBlock: "latest",
+        address: chain.usdtAddress,
+        topics: [
+          TRANSFER_TOPIC,
+          null, // any sender
+          paddedTo, // to our receiving address
+        ],
+      }],
+    };
+
+    const res = await fetch(chain.rpcUrl, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify(payload),
+      signal: AbortSignal.timeout(10000),
+    });
+
+    const data = await res.json();
+    if (!data.result || !Array.isArray(data.result)) return [];
+
+    return data.result.map((log: any) => {
+      const fromAddress = "0x" + log.topics[1].slice(26);
+      const toAddress = "0x" + log.topics[2].slice(26);
+      const rawAmount = BigInt(log.data);
+      const divisor = BigInt(10 ** chain.decimals);
+      const amount = Number(rawAmount) / Number(divisor);
+      const blockNumber = parseInt(log.blockNumber, 16);
+
+      return {
+        txHash: log.transactionHash,
+        fromAddress: fromAddress.toLowerCase(),
+        toAddress: toAddress.toLowerCase(),
+        amount,
+        blockNumber,
+      };
+    });
+  } catch (err) {
+    console.error(`[BridgeMonitor] Error fetching transfers on ${chain.name}:`, err);
+    return [];
+  }
+}
+
+// ─── Get latest block number ──────────────────────────────────────────────────
+async function getLatestBlock(chain: ChainConfig): Promise<number> {
+  try {
+    const res = await fetch(chain.rpcUrl, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ jsonrpc: "2.0", id: 1, method: "eth_blockNumber", params: [] }),
+      signal: AbortSignal.timeout(8000),
+    });
+    const data = await res.json();
+    return parseInt(data.result, 16);
+  } catch {
+    return 0;
+  }
+}
+
+// ─── Process new transfers and save to DB ────────────────────────────────────
+async function processTransfers(chain: ChainConfig): Promise<void> {
+  const db = await getDb();
+  if (!db) return;
+
+  // Get recent blocks (last ~100 blocks ≈ ~5 min on BSC, ~20 min on ETH)
+  const latestBlock = await getLatestBlock(chain);
+  if (!latestBlock) return;
+
+  const lookbackBlocks = chain.chainId === 1 ? 50 : 200; // ETH slower, BSC faster
+  const fromBlock = "0x" + Math.max(0, latestBlock - lookbackBlocks).toString(16);
+
+  const transfers = await fetchUsdtTransfers(chain, fromBlock);
+
+  for (const transfer of transfers) {
+    if (transfer.amount < 0.01) continue; // ignore dust
+
+    // Check if already recorded
+    try {
+      const existing = await db
+        .select({ id: bridgeOrders.id })
+        .from(bridgeOrders)
+        .where(eq(bridgeOrders.txHash, transfer.txHash))
+        .limit(1);
+
+      if (existing.length > 0) continue; // already recorded
+
+      // Calculate XIC amount
+      const xicAmount = transfer.amount / XIC_PRICE_USDT;
+
+      // Try to find matching intent (user pre-registered their XIC receive address)
+      const intent = await db
+        .select()
+        .from(bridgeIntents)
+        .where(and(
+          eq(bridgeIntents.fromChainId, chain.chainId),
+          eq(bridgeIntents.senderAddress, transfer.fromAddress),
+          eq(bridgeIntents.matched, false),
+        ))
+        .orderBy(desc(bridgeIntents.createdAt))
+        .limit(1);
+
+      const xicReceiveAddress = intent.length > 0 ? intent[0].xicReceiveAddress : null;
+
+      // Record the order
+      await db.insert(bridgeOrders).values({
+        txHash: transfer.txHash,
+        walletAddress: transfer.fromAddress,
+        fromChainId: chain.chainId,
+        fromToken: "USDT",
+        fromAmount: String(transfer.amount),
+        toChainId: 56,
+        toToken: "XIC",
+        toAmount: String(xicAmount),
+        xicReceiveAddress,
+        status: "confirmed",
+        confirmedAt: new Date(),
+        blockNumber: transfer.blockNumber,
+      });
+
+      // Mark intent as matched
+      if (intent.length > 0) {
+        await db
+          .update(bridgeIntents)
+          .set({ matched: true, matchedOrderId: undefined })
+          .where(eq(bridgeIntents.id, intent[0].id));
+      }
+
+      console.log(`[BridgeMonitor] New ${chain.name} deposit: ${transfer.amount} USDT from ${transfer.fromAddress} → ${xicAmount} XIC`);
+    } catch (err: any) {
+      if (err?.code === "ER_DUP_ENTRY") continue;
+      console.error(`[BridgeMonitor] Error recording transfer ${transfer.txHash}:`, err);
+    }
+  }
+}
+
+// ─── Start monitoring all chains ──────────────────────────────────────────────
+let monitorInterval: NodeJS.Timeout | null = null;
+
+export function startBridgeMonitor(): void {
+  if (monitorInterval) return;
+
+  console.log("[BridgeMonitor] Starting multi-chain USDT deposit monitor...");
+
+  const run = async () => {
+    for (const chain of BRIDGE_CHAINS) {
+      await processTransfers(chain).catch(err =>
+        console.error(`[BridgeMonitor] Error on ${chain.name}:`, err)
+      );
+    }
+  };
+
+  // Run immediately, then every 30 seconds
+  run();
+  monitorInterval = setInterval(run, 30_000);
+}
+
+export function stopBridgeMonitor(): void {
+  if (monitorInterval) {
+    clearInterval(monitorInterval);
+    monitorInterval = null;
+    console.log("[BridgeMonitor] Stopped.");
+  }
+}
+
+// ─── Export chain config for use in routes ───────────────────────────────────
+export function getChainConfig(chainId: number): ChainConfig | undefined {
+  return BRIDGE_CHAINS.find(c => c.chainId === chainId);
+}
--- a/server/onchain.ts
+++ b/server/onchain.ts
@ -25,11 +25,11 @@ const RPC_POOLS = {
    "https://rpc.ankr.com/bsc",
  ],
  ETH: [
-    "https://eth.llamarpc.com",
-    "https://ethereum.publicnode.com",
+    "https://ethereum.publicnode.com", // China-accessible
    "https://rpc.ankr.com/eth",
-    "https://1rpc.io/eth",
    "https://eth.drpc.org",
+    "https://1rpc.io/eth",
+    "https://eth.llamarpc.com",
    "https://cloudflare-eth.com",
    "https://rpc.payload.de",
  ],
--- a/server/routers.ts
+++ b/server/routers.ts
@ -5,7 +5,7 @@ import { publicProcedure, protectedProcedure, router } from "./_core/trpc";
 import { getCombinedStats, getPresaleStats } from "./onchain";
 import { getRecentPurchases } from "./trc20Monitor";
 import { getDb } from "./db";
-import { trc20Purchases, trc20Intents, bridgeOrders } from "../drizzle/schema";
+import { trc20Purchases, trc20Intents, bridgeOrders, bridgeIntents } from "../drizzle/schema";
 import { eq, desc, sql } from "drizzle-orm";
 import { z } from "zod";
 import { TRPCError } from "@trpc/server";
@ -42,7 +42,9 @@ const bridgeRouter = router({
          toChainId: input.toChainId,
          toToken: input.toToken,
          toAmount: input.toAmount,
-          status: "completed",
+          status: "confirmed" as const,
+          xicReceiveAddress: null,
+          confirmedAt: new Date(),
        });
        return { success: true };
      } catch (e: any) {
@ -51,7 +53,7 @@ const bridgeRouter = router({
      }
    }),

-  // List orders by wallet address
+  // List orders by wallet address (includes pending intents + confirmed orders)
  myOrders: publicProcedure
    .input(z.object({
      walletAddress: z.string().min(1).max(64),
@ -60,25 +62,70 @@ const bridgeRouter = router({
    .query(async ({ input }) => {
      const db = await getDb();
      if (!db) return [];
-      const rows = await db
+      const addr = input.walletAddress.toLowerCase();
+      // Query confirmed bridge orders
+      const confirmedRows = await db
        .select()
        .from(bridgeOrders)
-        .where(eq(bridgeOrders.walletAddress, input.walletAddress.toLowerCase()))
+        .where(eq(bridgeOrders.walletAddress, addr))
        .orderBy(desc(bridgeOrders.createdAt))
        .limit(input.limit);
-      return rows.map(r => ({
-        id: r.id,
-        txHash: r.txHash,
-        walletAddress: r.walletAddress,
-        fromChainId: r.fromChainId,
-        fromToken: r.fromToken,
-        fromAmount: Number(r.fromAmount),
-        toChainId: r.toChainId,
-        toToken: r.toToken,
-        toAmount: Number(r.toAmount),
-        status: r.status,
-        createdAt: r.createdAt,
-      }));
+      // Query pending bridge intents (by xicReceiveAddress)
+      const intentRows = await db
+        .select()
+        .from(bridgeIntents)
+        .where(eq(bridgeIntents.xicReceiveAddress, addr))
+        .orderBy(desc(bridgeIntents.createdAt))
+        .limit(input.limit);
+      // Merge: intents first (pending), then confirmed orders
+      const result = [
+        ...intentRows.map(r => ({
+          id: r.id,
+          type: 'intent' as const,
+          fromChainId: r.fromChainId,
+          xicReceiveAddress: r.xicReceiveAddress,
+          expectedUsdt: r.expectedUsdt ? Number(r.expectedUsdt) : null,
+          matched: r.matched,
+          status: r.matched ? 'confirmed' as const : 'pending' as const,
+          createdAt: r.createdAt,
+        })),
+        ...confirmedRows.map(r => ({
+          id: r.id,
+          type: 'order' as const,
+          txHash: r.txHash,
+          walletAddress: r.walletAddress,
+          fromChainId: r.fromChainId,
+          fromToken: r.fromToken,
+          fromAmount: Number(r.fromAmount),
+          toChainId: r.toChainId,
+          toToken: r.toToken,
+          toAmount: Number(r.toAmount),
+          status: r.status,
+          createdAt: r.createdAt,
+        })),
+      ];
+      return result.sort((a, b) => new Date(b.createdAt!).getTime() - new Date(a.createdAt!).getTime()).slice(0, input.limit);
+    }),
+
+  // Register a bridge intent — user pre-registers before sending USDT
+  registerIntent: publicProcedure
+    .input(z.object({
+      fromChainId: z.number().int(),
+      senderAddress: z.string().max(64).or(z.literal("")).transform(v => v === "" ? undefined : v).optional(), // optional — filled when wallet connected
+      xicReceiveAddress: z.string().regex(/^0x[0-9a-fA-F]{40}$/, "Invalid EVM address"),
+      expectedUsdt: z.number().min(0.01).optional(),
+    }))
+    .mutation(async ({ input }) => {
+      const db = await getDb();
+      if (!db) throw new TRPCError({ code: "INTERNAL_SERVER_ERROR", message: "DB unavailable" });
+      await db.insert(bridgeIntents).values({
+        fromChainId: input.fromChainId,
+        senderAddress: input.senderAddress ? input.senderAddress.toLowerCase() : null,
+        xicReceiveAddress: input.xicReceiveAddress,
+        expectedUsdt: input.expectedUsdt ? String(input.expectedUsdt) : null,
+        matched: false,
+      });
+      return { success: true, message: "Intent registered. Please send USDT now." };
    }),

  // List recent bridge orders (public)
--- a/todo.md
+++ b/todo.md
@ -144,11 +144,35 @@

 ## v12 Bridge跨链桥完善 + 钱包连接深度修复

- [ ] WalletSelector v5：ErrorHelpPanel组件（分类错误处理+MetaMask权限重置5步指南）
- [ ] WalletSelector v5：连接中状态改为"等待钱包授权"提示
- [ ] WalletSelector v5：错误后显示"重试"按钮和其他可用钱包
- [ ] Bridge页面：确认所有链(BSC/ETH/Polygon/Arbitrum/Avalanche)USDT→XIC路由逻辑
- [ ] Bridge页面：Gas费说明（每条链原生代币：BNB/ETH/MATIC/ETH/AVAX）
- [ ] 构建v12并部署到AI服务器(43.224.155.27)
- [ ] 同步代码到备份Git库(git.newassetchain.io)
- [ ] 记录部署日志
+- [x] WalletSelector v5：ErrorHelpPanel组件（分类错误处理+MetaMask权限重置5步指南）
+- [x] WalletSelector v5：连接中状态改为"等待钱包授权"提示
+- [x] WalletSelector v5：错误后显示"重试"按钮和其他可用钱包
+- [x] Bridge页面：确认所有链(BSC/ETH/Polygon/Arbitrum/Avalanche)USDT→XIC路由逻辑
+- [x] Bridge页面：Gas费说明（每条链原生代币：BNB/ETH/MATIC/ETH/AVAX）
+- [x] 构建v12并部署到AI服务器(43.224.155.27)
+- [x] 同步代码到备份Git库(git.newassetchain.io)
+- [x] 记录部署日志
+
+## v13 自研跨链桥（完全移除Li.Fi）
+
+- [x] 数据库：新增 bridge_deposits 表（多链USDT转入记录）
+- [x] 后端：多链USDT收款地址配置（BSC/ETH/Polygon/Arbitrum/Avalanche）
+- [x] 后端：链上USDT转入监听（每30秒轮询各链收款地址）
+- [x] 后端：tRPC接口：提交转账意图（walletAddress + fromChain + usdtAmount + xicReceiveAddress）
+- [x] 后端：tRPC接口：查询订单状态（by walletAddress）
+- [x] 前端：完全移除Li.Fi依赖和代码
+- [x] 前端：选链 → 显示对应链USDT收款地址 → 用户转账 → 实时状态跟踪
+- [x] 前端：连接钱包后自动填写XIC接收地址
+- [x] 前端：中英文双语支持
+- [x] 构建并部署到AI服务器
+- [x] 浏览器完整测试
+- [x] 同步到备份Git库
+- [x] 记录部署日志
+
+## v13 收款地址更新（官方地址）
+
+- [x] Bridge.tsx：更新BSC收款地址为 0x43DAb577f3279e11D311E7d628C6201d893A9Aa3
+- [x] Bridge.tsx：ETH/Polygon/Arbitrum 使用同一EVM地址 0x43DAb577f3279e11D311E7d628C6201d893A9Aa3
+- [x] bridgeMonitor.ts：更新所有链收款地址
+- [x] Home.tsx：更新TRC20收款地址为 TWc2ugYBFN5aSoimAh4qGt9oMyket6NYZp
+- [x] contracts.ts：同步更新TRC20/ERC20/BEP20地址
				`@ -0,0 +1 @@`
				ALTER TABLE `bridge_intents` MODIFY COLUMN `senderAddress` varchar(64);