Added Sepolia network (#3325).

packages/networks/src.ts/index.ts

@@ -49,7 +49,7 @@ function ethDefaultProvider(network: string | Network): Renetworkable {
             // network does not handle the Berlin hardfork, which is
             // live on these ones.
             // @TODO: This goes away once Pocket has upgraded their nodes
-            const skip = [ "goerli", "ropsten", "rinkeby" ];
+            const skip = [ "goerli", "ropsten", "rinkeby", "sepolia" ];
             try {
                 const provider = new providers.PocketProvider(network, options.pocket);
                 if (provider.network && skip.indexOf(provider.network.name) === -1) {
@@ -166,6 +166,12 @@ const networks: { [name: string]: Network } = {
 
     kintsugi: { chainId: 1337702, name: "kintsugi" },
 
+    sepolia: {
+        chainId: 11155111,
+        name: "sepolia",
+        _defaultProvider: ethDefaultProvider("sepolia")
+    },
+
 
     // ETC (See: #351)
     classic: {

packages/providers/src.ts/etherscan-provider.ts

@@ -179,6 +179,8 @@ export class EtherscanProvider extends BaseProvider{
                 return "https:/\/api-kovan.etherscan.io";
             case "goerli":
                 return "https:/\/api-goerli.etherscan.io";
+            case "sepolia":
+                return "https:/\/api-sepolia.etherscan.io";
             case "optimism":
                 return "https:/\/api-optimistic.etherscan.io";
             case "optimism-kovan":

packages/providers/src.ts/infura-provider.ts

@@ -99,6 +99,9 @@ export class InfuraProvider extends UrlJsonRpcProvider {
             case "goerli":
                 host = "goerli.infura.io";
                 break;
+            case "sepolia":
+                host = "sepolia.infura.io";
+                break;
             case "matic":
                 host = "polygon-mainnet.infura.io";
                 break;