diff --git a/_data/chains/eip155-108.json b/_data/chains/eip155-108.json
index a355e583..567cbc57 100644
--- a/_data/chains/eip155-108.json
+++ b/_data/chains/eip155-108.json
@@ -2,13 +2,15 @@
   "name": "ThunderCore Mainnet",
   "chain": "TT",
   "rpc": [
-    "https://mainnet-rpc.thundercore.com"
+    "https://mainnet-rpc.thundercore.com",
+    "https://mainnet-rpc.thundertoken.net",
+    "https://mainnet-rpc.thundercore.io"
   ],
   "faucets": [
     "https://faucet.thundercore.com"
   ],
   "nativeCurrency": {
-    "name": "ThunderCore Mainnet Ether",
+    "name": "ThunderCore Token",
     "symbol": "TT",
     "decimals": 18
   },
@@ -18,9 +20,11 @@
   "networkId": 108,
   "slip44": 1001,
   
-  "explorers": [{
-  "name": "ThundercoreScan",
-  "url": "https://scan.thundercore.com",
-  "standard": "none"
-  }]
+  "explorers": [
+    {
+      "name": "thundercore-viewblock",
+      "url": "https://viewblock.io/thundercore",
+      "standard": "EIP3091"
+    }
+  ]
 }
diff --git a/_data/chains/eip155-18.json b/_data/chains/eip155-18.json
index ca28eb1d..b2822c64 100644
--- a/_data/chains/eip155-18.json
+++ b/_data/chains/eip155-18.json
@@ -8,7 +8,7 @@
     "https://faucet-testnet.thundercore.com"
   ],
   "nativeCurrency": {
-    "name": "ThunderCore Testnet Ether",
+    "name": "ThunderCore Testnet Token",
     "symbol": "TST",
     "decimals": 18
   },
@@ -16,9 +16,11 @@
   "shortName": "TST",
   "chainId": 18,
   "networkId": 18,
-  "explorers": [{
-    "name": "ThundercoreTestNetScanner",
-    "url": "https://scan-testnet.thundercore.com",
-    "standard": "none"
-  }]
+  "explorers": [
+    {
+      "name": "thundercore-blockscout-testnet",
+      "url": "https://explorer-testnet.thundercore.com",
+      "standard": "EIP3091"
+    }
+  ]
 }
diff --git a/_data/chains/eip155-1819.json b/_data/chains/eip155-1819.json
new file mode 100644
index 00000000..d5166f02
--- /dev/null
+++ b/_data/chains/eip155-1819.json
@@ -0,0 +1,30 @@
+{
+  "name": "Cube Chain Testnet",
+  "chain": "Cube",
+  "rpc": [
+    "https://http-testnet.cube.network",
+    "wss://ws-testnet.cube.network",
+    "https://http-testnet-sg.cube.network",
+    "wss://ws-testnet-sg.cube.network",
+    "https://http-testnet-jp.cube.network",
+    "wss://ws-testnet-jp.cube.network",
+    "https://http-testnet-us.cube.network",
+    "wss://ws-testnet-us.cube.network"
+  ],
+  "faucets": ["https://faucet.cube.network"],
+  "nativeCurrency": {
+    "name": "Cube Chain Test Native Token",
+    "symbol": "CUBET",
+    "decimals": 18
+  },
+  "infoURL": "https://www.cube.network",
+  "shortName": "cubet",
+  "chainId": 1819,
+  "networkId": 1819,
+  "slip44": 1819,
+  "explorers": [{
+    "name": "cubetest-scan",
+    "url": "https://testnet.cubescan.network",
+    "standard": "EIP3091"
+  }]
+}
diff --git a/_data/chains/eip155-21816.json b/_data/chains/eip155-21816.json
index c657423a..37771340 100644
--- a/_data/chains/eip155-21816.json
+++ b/_data/chains/eip155-21816.json
@@ -3,21 +3,21 @@
   "chain": "OML",
   "icon": "omlira",
   "rpc": [
-    "https://seed.omlira.com"
+    "https://seed.omchain.io"
   ],
   "faucets": [],
   "nativeCurrency": {
-    "name": "Omlira",
-    "symbol": "OML",
+    "name": "omChain",
+    "symbol": "OMC",
     "decimals": 18
   },
-  "infoURL": "https://omlira.com",
-  "shortName": "oml",
+  "infoURL": "https://omchain.io",
+  "shortName": "omc",
   "chainId": 21816,
   "networkId": 21816,
   "explorers": [{
     "name": "omChain Explorer",
-    "url": "https://explorer.omlira.com",
+    "url": "https://explorer.omchain.io",
     "standard": "EIP3091"
   }]
 }