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frontend/src/services/tokens.js

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+import api from '../api/axios';
+
+// Адреса смарт-контрактов токенов HB3A
+export const TOKEN_CONTRACTS = {
+  eth: {
+    address: "0xd95a45fc46a7300e6022885afec3d618d7d3f27c",
+    symbol: "HB3A",
+    network: "Ethereum"
+  },
+  bsc: {
+    address: "0x1d47f12ffA279BFE59Ab16d56fBb10d89AECdD5D",
+    symbol: "HB3A",
+    network: "BSC"
+  },
+  arbitrum: {
+    address: "0xdce769b847a0a697239777d0b1c7dd33b6012ba0",
+    symbol: "HB3A",
+    network: "Arbitrum"
+  },
+  polygon: {
+    address: "0x351f59de4fedbdf7601f5592b93db3b9330c1c1d",
+    symbol: "HB3A",
+    network: "Polygon"
+  }
+};
+
+// Получение балансов токенов
+export const fetchTokenBalances = async () => {
+  try {
+    const response = await api.get('/api/tokens/balances');
+    return response.data;
+  } catch (error) {
+    console.error('Error fetching token balances:', error);
+    return {
+      eth: '0',
+      bsc: '0',
+      arbitrum: '0',
+      polygon: '0'
+    };
+  }
+};