Fix snowtrace sourcecode verify api (#2085)

* Fix snowtrace sourcecode verify api

* Update blockroute snowtrace API

* Blockroute API compatibility

Author: jakeloo

lib/maps.ts

@@ -6,8 +6,8 @@ export const apiKeyMap: Record<number, string> = {
   80001: process.env.POLYGONSCAN_KEY as string,
   250: process.env.FANTOMSCAN_KEY as string,
   4002: process.env.FANTOMSCAN_KEY as string,
-  43114: process.env.SNOWTRACE_KEY as string,
-  43113: process.env.SNOWTRACE_KEY as string,
+  43114: "",
+  43113: "",
   42161: process.env.ARBITRUMSCAN_KEY as string,
   421613: process.env.ARBITRUMSCAN_KEY as string,
   10: process.env.OPTIMISMSCAN_KEY as string,
@@ -42,8 +42,8 @@ export const apiMap: Record<number, string> = {
   11155111: "https://api-sepolia.etherscan.io/api",
   4002: "https://api-testnet.ftmscan.com/api",
   42161: "https://api.arbiscan.io/api",
-  43113: "https://api-testnet.snowtrace.io/api",
-  43114: "https://api.snowtrace.io/api",
+  43113: "https://api.routescan.io/v2/network/testnet/evm/43113/etherscan/api",
+  43114: "https://api.routescan.io/v2/network/mainnet/evm/43114/etherscan/api",
   421613: "https://api-goerli.arbiscan.io/api",
   80001: "https://api-testnet.polygonscan.com/api",
   1313161554: "https://api.aurorascan.dev/api",

pages/api/etherscan-fetch.ts

@@ -34,7 +34,7 @@ const handler = async (req: NextApiRequest, res: NextApiResponse) => {
     return res.status(400).json({ error: "invalid chainId" });
   }
 
-  const endpoint = `${apiMap[chainId]}?module=contract&action=getsourcecode&address=${contractAddress}&apikey=${apiKeyMap[chainId]}"`;
+  const endpoint = `${apiMap[chainId]}?module=contract&action=getsourcecode&address=${contractAddress}&apikey=${apiKeyMap[chainId]}`;
 
   try {
     const result = await fetch(endpoint, {
@@ -46,8 +46,12 @@ const handler = async (req: NextApiRequest, res: NextApiResponse) => {
     });
 
     const data = await result.json();
-    const etherscanResult = data.result[0] as EtherscanResult;
-    if (etherscanResult.ABI === "Contract source code not verified") {
+    const etherscanResult = Array.isArray(data.result)
+      ? data.result[0]
+      : data.result;
+    // Blockroute and etherscan return different output schema
+    const etherscanResultMessage = etherscanResult.ABI || etherscanResult;
+    if (etherscanResultMessage === "Contract source code not verified") {
       return res
         .status(404)
         .json({ error: "Contract source code not verified on etherscan" });