Add CHN token (#15297)

* add info

* add logo

* update CHN logo

* update token explorer

* update description

* update token info

blockchains/ethereum/assets/0x41C37A4683d6a05adB31c39D71348A8403B13Ca9/info.json

@@ -0,0 +1,33 @@
+{
+    "name": "Chain",
+    "website": "https://chain.com",
+    "description": "Chain is a cloud blockchain infrastructure that enables organizations to build better financial services from the ground up. Chain has launched Chain Core which is a permissioned and open source blockchain and Sequence, its ledger as a service product. Clients can receive discounts and pay for commercial fees with Chain Tokens (CHN) as well as participate in community protocol governance and access to premium features.",
+    "explorer": "https://etherscan.io/token/0x41C37A4683d6a05adB31c39D71348A8403B13Ca9",
+    "type": "ERC20",
+    "symbol": "CHN",
+    "decimals": 18,
+    "status": "active",
+    "id": "0x41C37A4683d6a05adB31c39D71348A8403B13Ca9",
+    "links": [
+        {
+            "name": "github",
+            "url": "https://github.com/chain"
+        },
+        {
+            "name": "twitter",
+            "url": "https://twitter.com/chain"
+        },
+        {
+            "name": "blog",
+            "url": "https://blog.chain.com/"
+        },
+        {
+            "name": "coinmarketcap",
+            "url": "https://coinmarketcap.com/currencies/chain/"
+        },
+        {
+            "name": "telegram",
+            "url": "https://t.me/Chain"
+        }
+    ]
+}