eth: migrate etherscan API to v2

Author: Tomasvrba

CHANGELOG.md

@@ -8,6 +8,7 @@
 - Introduce full screen selector for mobile in place of dropdown
 - Fix wrong estimated confirmation time for ERC20 tokens.
 - Enable unlock test wallet in testnet
+- Upgrade Etherscan API to V2
 
 # v4.47.2
 - Linux: fix compatiblity with some versions of Mesa that are incompatible with the bundled wayland libraries

backend/backend.go

@@ -517,19 +517,19 @@ func (backend *Backend) Coin(code coinpkg.Code) (coinpkg.Coin, error) {
 		coin = btc.NewCoin(coinpkg.CodeLTC, "Litecoin", "LTC", coinpkg.BtcUnitDefault, &ltc.MainNetParams, dbFolder, servers,
 			"https://blockchair.com/litecoin/transaction/", backend.socksProxy)
 	case code == coinpkg.CodeETH:
-		etherScan := etherscan.NewEtherScan("https://api.etherscan.io/api", backend.etherScanHTTPClient)
+		etherScan := etherscan.NewEtherScan("1", backend.etherScanHTTPClient)
 		coin = eth.NewCoin(etherScan, code, "Ethereum", "ETH", "ETH", params.MainnetChainConfig,
 			"https://etherscan.io/tx/",
 			etherScan,
 			nil)
 	case code == coinpkg.CodeSEPETH:
-		etherScan := etherscan.NewEtherScan("https://api-sepolia.etherscan.io/api", backend.etherScanHTTPClient)
+		etherScan := etherscan.NewEtherScan("11155111", backend.etherScanHTTPClient)
 		coin = eth.NewCoin(etherScan, code, "Ethereum Sepolia", "SEPETH", "SEPETH", params.SepoliaChainConfig,
 			"https://sepolia.etherscan.io/tx/",
 			etherScan,
 			nil)
 	case erc20Token != nil:
-		etherScan := etherscan.NewEtherScan("https://api.etherscan.io/api", backend.etherScanHTTPClient)
+		etherScan := etherscan.NewEtherScan("1", backend.etherScanHTTPClient)
 		coin = eth.NewCoin(etherScan, erc20Token.code, erc20Token.name, erc20Token.unit, "ETH", params.MainnetChainConfig,
 			"https://etherscan.io/tx/",
 			etherScan,

backend/coins/eth/etherscan/etherscan.go

@@ -53,14 +53,16 @@ type EtherScan struct {
 	url        string
 	httpClient *http.Client
 	limiter    *rate.Limiter
+	chainId    string
 }
 
 // NewEtherScan creates a new instance of EtherScan.
-func NewEtherScan(url string, httpClient *http.Client) *EtherScan {
+func NewEtherScan(chainId string, httpClient *http.Client) *EtherScan {
 	return &EtherScan{
-		url:        url,
+		url:        "https://api.etherscan.io/v2/api",
 		httpClient: httpClient,
 		limiter:    rate.NewLimiter(rate.Limit(callsPerSec), 1),
+		chainId:    chainId,
 	}
 }
 
@@ -69,6 +71,7 @@ func (etherScan *EtherScan) call(ctx context.Context, params url.Values, result
 		return errp.WithStack(err)
 	}
 	params.Set("apikey", apiKey)
+	params.Set("chainId", etherScan.chainId)
 	response, err := etherScan.httpClient.Get(etherScan.url + "?" + params.Encode())
 	if err != nil {
 		return errp.WithStack(err)