diff --git a/apps/etherscan/src/app/utils/scripts.ts b/apps/etherscan/src/app/utils/scripts.ts
index 11998291d6..9a711dcd87 100644
--- a/apps/etherscan/src/app/utils/scripts.ts
+++ b/apps/etherscan/src/app/utils/scripts.ts
@@ -5,13 +5,13 @@ export const verifyScript = `
  * @param {string} contractArguments - Parameters used in the contract constructor during the initial deployment. It should be the hex encoded value.
  * @param {string} contractName - Name of the contract
  * @param {string} contractFile - File where the contract is located
-* @param {number | string} chainId - Network chain id
+* @param {number | string} chainRef - Network chain id or API URL
  * @returns {{ guid, status, message, succeed }} verification result
  */
-export const verify = async (apikey: string, contractAddress: string, contractArguments: string, contractName: string, contractFile: string, chainId: number | string) => {
+export const verify = async (apikey: string, contractAddress: string, contractArguments: string, contractName: string, contractFile: string, chainRef: number | string) => {
     const compilationResultParam = await remix.call('compilerArtefacts' as any, 'getCompilerAbstract', contractFile)
     console.log('verifying.. ' + contractName)
-    return await remix.call('etherscan' as any,  'verify', apikey, contractAddress, contractArguments, contractName, compilationResultParam, chainId)
+    return await remix.call('etherscan' as any,  'verify', apikey, contractAddress, contractArguments, contractName, compilationResultParam, chainRef)
 }`
 
 export const receiptGuidScript = `
diff --git a/apps/etherscan/src/app/utils/verify.ts b/apps/etherscan/src/app/utils/verify.ts
index 3d8bd875ae..88732c0c9e 100644
--- a/apps/etherscan/src/app/utils/verify.ts
+++ b/apps/etherscan/src/app/utils/verify.ts
@@ -21,24 +21,31 @@ export const verify = async (
     contractArgumentsParam: string,
     contractName: string,
     compilationResultParam: CompilerAbstract,
-    chainId: number | string, 
+    chainRef: number | string, 
     client: PluginClient,
     onVerifiedContract: (value: EtherScanReturn) => void,
     setResults: (value: string) => void
   ) => {
     let networkChainId
-    if (chainId) networkChainId = chainId
-    else {
+    let etherscanApi
+    if (chainRef) {
+      if (typeof chainRef === 'number') {
+        networkChainId = chainRef
+        etherscanApi = getEtherScanApi(networkChainId)
+      } else if (typeof chainRef === 'string') etherscanApi = chainRef
+    } else {
       const { network, networkId } = await getNetworkName(client)
       if (network === "vm") {
         return {
             succeed: false,
             message: "Cannot verify in the selected network"
         }
-      } else networkChainId = networkId
+      } else {
+        networkChainId = networkId
+        etherscanApi = getEtherScanApi(networkChainId)
+      }
     }
     
-    const etherscanApi = getEtherScanApi(networkChainId)
 
     try {
       const contractMetadata = getContractMetadata(