diff --git a/constants/additionalChainRegistry/chainid-1888.js b/constants/additionalChainRegistry/chainid-1888.js
new file mode 100644
index 0000000000..061d12b08c
--- /dev/null
+++ b/constants/additionalChainRegistry/chainid-1888.js
@@ -0,0 +1,27 @@
+//chainid-1888.js
+export const data = {
+  "name": "RecorderCoin Mainnet",
+  "chain": "RECR",
+  "icon": "https://recordercoin.org/Recorder%20Coin%20Logo%20256x256.png",
+  "rpc": [
+    "https://rpc.recordercoin.org",
+    "https://rpc1.recordercoin.org"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "RecorderCoin",
+    "symbol": "RECR",
+    "decimals": 18
+  },
+  "infoURL": "https://recordercoin.org",
+  "shortName": "recr",
+  "chainId": 1888,
+  "networkId": 223344,
+  "explorers": [
+    {
+      "name": "RecorderCoin Explorer",
+      "url": "https://explorer.recordercoin.org",
+      "standard": "EIP3091"
+    }
+  ]
+}
diff --git a/constants/additionalChainRegistry/chainid-18882.js b/constants/additionalChainRegistry/chainid-18882.js
new file mode 100644
index 0000000000..0492ff94c6
--- /dev/null
+++ b/constants/additionalChainRegistry/chainid-18882.js
@@ -0,0 +1,30 @@
+//chainid-18881.js
+export const data = {
+  "name": "RecorderCoin Testnet",
+  "chain": "tRECR",
+  "icon": "https://recordercoin.org/Recorder%20Coin%20Logo%20256x256.png",
+  "rpc": [
+    "https://testnet-rpc.recordercoin.org"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "Test RecorderCoin",
+    "symbol": "tRECR",
+    "decimals": 18
+  },
+  "infoURL": "https://recordercoin.org",
+  "shortName": "trecr",
+  "chainId": 18882
+,
+  "networkId": 2233441,
+  "explorers": [
+    {
+      "name": "RecorderCoin Testnet Explorer",
+      "url": "https://explorer-testnet.recordercoin.org",
+      "standard": "EIP3091"
+    }
+  ],
+  "features": [{ "name": "EIP155" }],
+  "testnet": true
+}
+