diff --git a/contracts/configs/legacy/main.json b/contracts/configs/legacy/main.json
new file mode 100644
index 00000000..dc866d01
--- /dev/null
+++ b/contracts/configs/legacy/main.json
@@ -0,0 +1,158 @@
+{
+  "bridges": {
+    "eth": {
+      "amb": "0x19caBC1E34Ab0CC5C62DaA1394f6022B38b75c78",
+      "side": "0x0De2669e8A7A6F6CC0cBD3Cf2D1EEaD89e243208"
+    },
+    "bsc": {
+      "amb": "0xe10eB55f6EeF66218BbE58B749428ec4A51D6659",
+      "side": "0x92fa52d3043725D00Eab422440C4e9ef3ba180d3"
+    }
+  },
+  "ambFaucetAddress": "0x5B72903b7D2711134DD2120Bc3CA61DB6f10cB92",
+  "tokens": {
+    "SAMB": {
+      "isActive": true,
+      "name": "Synthetic Amber",
+      "symbol": "SAMB",
+      "denomination": 18,
+      "decimals": {
+        "amb": 18,
+        "bsc": 18,
+        "eth": 18
+      },
+      "logo": "https://media-exp1.licdn.com/dms/image/C560BAQFuR2Fncbgbtg/company-logo_200_200/0/1636390910839?e=2159024400&v=beta&t=W0WA5w02tIEH859mVypmzB_FPn29tS5JqTEYr4EYvps",
+      "primaryNets": [
+        "amb"
+      ],
+      "addresses": {
+        "amb": "0x2b2d892C3fe2b4113dd7aC0D2c1882AF202FB28F",
+        "bsc": "0x23c1C1cc14270B7Bd63677d1fe4790891b17A33d",
+        "eth": "0x683aae5cD37AC94943D05C19E9109D5876113562"
+      },
+      "nativeAnalog": "AMB"
+    },
+    "SAMB2": {
+      "isActive": true,
+      "name": "AirDAO",
+      "symbol": "AMB",
+      "denomination": 18,
+      "decimals": {
+        "amb": 18,
+        "bsc": 18,
+        "eth": 18
+      },
+      "logo": "https://media-exp1.licdn.com/dms/image/C560BAQFuR2Fncbgbtg/company-logo_200_200/0/1636390910839?e=2159024400&v=beta&t=W0WA5w02tIEH859mVypmzB_FPn29tS5JqTEYr4EYvps",
+      "primaryNets": [
+        "amb"
+      ],
+      "addresses": {
+        "amb": "0x2b2d892C3fe2b4113dd7aC0D2c1882AF202FB28F",
+        "bsc": "",
+        "eth": "0x586EE5Df24c5a426e42eD7Ea6e3EB0f00a4a2256"
+      },
+      "nativeAnalog": "AMB"
+    },
+    "WETH": {
+      "isActive": false,
+      "name": "Wrapped Ether",
+      "symbol": "WETH",
+      "denomination": 18,
+      "decimals": {
+        "amb": 18,
+        "eth": 18
+      },
+      "logo": "https://ethereum.org/static/bfc04ac72981166c740b189463e1f74c/448ee/eth-diamond-black-white.webp",
+      "primaryNets": [
+        "eth"
+      ],
+      "addresses": {
+        "amb": "0xe7c3607474E235Ec8deF1f0a63Ea983538eea182",
+        "eth": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
+      },
+      "nativeAnalog": "ETH"
+    },
+    "WBNB": {
+      "isActive": false,
+      "name": "Wrapped BNB",
+      "symbol": "WBNB",
+      "denomination": 18,
+      "decimals": {
+        "amb": 18,
+        "bsc": 18
+      },
+      "logo": "https://bscscan.com/token/images/binance_32.png",
+      "primaryNets": [
+        "bsc"
+      ],
+      "addresses": {
+        "amb": "0xA96C522fA8Df99BB73A6E317A1afb0E3FA13b735",
+        "bsc": "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c"
+      },
+      "nativeAnalog": "BNB"
+    },
+    "USDC": {
+      "isActive": true,
+      "name": "USD Coin",
+      "symbol": "USDC",
+      "denomination": 6,
+      "decimals": {
+        "amb": 18,
+        "bsc": 18,
+        "eth": 6
+      },
+      "logo": "https://etherscan.io/token/images/centre-usdc_28.png",
+      "primaryNets": [
+        "bsc",
+        "eth"
+      ],
+      "addresses": {
+        "amb": "0xd8dd0273D31c1cd9Dba104DaCA7C1dfEE4f7b805",
+        "bsc": "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
+        "eth": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
+      },
+      "nativeAnalog": ""
+    },
+    "BUSD": {
+      "isActive": true,
+      "name": "BUSD Token",
+      "symbol": "BUSD",
+      "denomination": 18,
+      "decimals": {
+        "amb": 18,
+        "bsc": 18
+      },
+      "logo": "https://bscscan.com/token/images/busd_32.png",
+      "primaryNets": [
+        "bsc"
+      ],
+      "addresses": {
+        "amb": "0x7A477aA8ED4884509387Dba81BA6F2B7C97597e2",
+        "bsc": "0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56"
+      },
+      "nativeAnalog": ""
+    },
+    "USDT": {
+      "isActive": true,
+      "name": "Tether USD",
+      "symbol": "USDT",
+      "denomination": 6,
+      "decimals": {
+        "amb": 18,
+        "bsc": 18,
+        "eth": 6
+      },
+      "logo": "https://etherscan.io/token/images/tether_32.png",
+      "primaryNets": [
+        "bsc",
+        "eth"
+      ],
+      "addresses": {
+        "amb": "0xfEE01F2D120250A0a59bfbF9C144F8ECC4425fCc",
+        "bsc": "0x55d398326f99059fF775485246999027B3197955",
+        "eth": "0xdAC17F958D2ee523a2206206994597C13D831ec7"
+      },
+      "nativeAnalog": ""
+    }
+  }
+}