A set of classes to work with evm-compatible blockchain observers
MIT License
Client for receiving blockchain data through block explorers (in particular, routescan). At the moment, the number of available methods is limited to those indicated in the examples below:
To support this project, you can send crypto to:
import { BlockExplorerCommon, BlockExplorerTag, BlockExplorerTopicOperation, Chain, BlockExplorerSort } from 'routescan-client';
const ROUTESCAN_API_KEY = 'YourApiKey';
const WALLET = '0x285f5F8Cd290Cff6596337C4eEC14e1a62235854';
async function main() {
const blockExplorer = BlockExplorerCommon.build({
chain: Chain.AvalancheCChainFuji,
apiKey: ROUTESCAN_API_KEY
});
// Get AVAX balance for a single address:
const balance = await blockExplorer.getAccountBalance({
address: WALLET,
tag: BlockExplorerTag.Latest
});
console.log(`Balance of ${WALLET} is ${balance}`);
// Get AVAX balance for multiple addresses in a single call:
const WALLET_SECOND = '0xCD5B8Ea4a848b1c576125f20F9aDe5F58FDf4D4f';
const balances = await blockExplorer.getAccountsBalances({
address: [WALLET, WALLET_SECOND].join(','),
tag: BlockExplorerTag.Latest
});
console.log(balances);
// Get a list of 'Normal' Transactions By Address
const normalTxs = await blockExplorer.getNormalTxListByAddress({
address: WALLET
});
console.log(normalTxs);
// Get a list of 'internal' transactions by address:
const internalTxs = await blockExplorer.getInternalTxListByAddress({
address: WALLET
});
console.log(internalTxs);
// Get 'internal transactions' by transaction hash
const internalTxsByHash = await blockExplorer.getInternalTxListByTxHash({
txhash: '0x40eb908387324f2b575b4879cd9d7188f69c8fc9d87c901b9e2daaea4b442170'
});
console.log(internalTxsByHash);
// Get a list of 'ERC20 - token transfer events' by address:
const tokenEvents = await blockExplorer.getErc20TokenTransferEventsList({
address: '0x77134cbC06cB00b66F4c7e623D5fdBF6777635EC',
contractaddress: '0x9702230A8Ea53601f5cD2dc00fDBc13d4dF4A8c7',
page: 1,
offset: 100,
startblock: 34372864,
endblock: 34472864,
sort: BlockExplorerSort.Asc
});
console.log(tokenEvents);
// Get ERC20-Token Account Balance for TokenContractAddress:
const tokenBalance = await blockExplorer.getAccountTokenBalance({
contractAddress: '0x57d90b64a1a57749b0f932f1a3395792e12e7055',
address: WALLET,
tag: BlockExplorerTag.Latest
});
console.log(`Balance of ${WALLET} is ${tokenBalance}`);
}
main();
import { BlockExplorerClosest, BlockExplorerCommon, Chain } from 'routescan-client';
const ROUTESCAN_API_KEY = 'YourApiKey';
const WALLET = '0x285f5F8Cd290Cff6596337C4eEC14e1a62235854';
async function main() {
const blockExplorer = BlockExplorerCommon.build({
chain: Chain.AvalancheCChainFuji,
apiKey: ROUTESCAN_API_KEY
});
// Get estimated block countdown time by blockNo:
const blockCountdown = await blockExplorer.getBlockCountdownTime({
blockno: 167015880000
});
console.log('Block countdown', blockCountdown);
// Get block number by timestamp:
const timestamp = 1619638524;
const blockNumberByTimestamp = await blockExplorer.getBlockNumberByTimestamp({
timestamp,
closest: BlockExplorerClosest.After
});
console.log(`Block number after ${timestamp} is ${blockNumberByTimestamp}`);
}
main();
import { BlockExplorerCommon, BlockExplorerTopicOperation, Chain } from 'routescan-client';
const ROUTESCAN_API_KEY = 'YourApiKey';
const WALLET = '0x285f5F8Cd290Cff6596337C4eEC14e1a62235854';
async function main() {
const blockExplorer = BlockExplorerCommon.build({
chain: Chain.AvalancheCChainFuji,
apiKey: ROUTESCAN_API_KEY
});
// Get event logs by address:
const logs = await blockExplorer.getEventLogsByAddress({
address: '0x9e66eba102b77fc75cd87b5e60141b85573bc8e8',
fromBlock: 37000000,
toBlock: 37200000,
page: 1,
offset: 1000
});
console.log(logs);
// Get event logs by topics:
const topicsLogs = await blockExplorer.getEventLogsByTopics({
fromBlock: 37000000,
toBlock: 37200000,
topic0: '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef',
topic0_1_opr: BlockExplorerTopicOperation.And,
topic1: '0x0000000000000000000000000000000000000000000000000000000000000000',
page: 1,
offset: 1000
});
console.log(topicsLogs.length);
// Get Event Logs by Address filtered by Topics:
const addressLogs = await blockExplorer.getEventLogsByAddressFiltered({
address: '0x9e66eba102b77fc75cd87b5e60141b85573bc8e8',
fromBlock: 37000000,
toBlock: 37200000,
topic0: '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef',
topic0_1_opr: BlockExplorerTopicOperation.And,
topic1: '0x0000000000000000000000000000000000000000000000000000000000000000',
page: 1,
offset: 1000
});
console.log(addressLogs.length);
}
main();
You must use the API key of the corresponding block explorer!!! Just register an account on corresponding site and generate an API key.
PS: Client also support other etherscan-compatible block explorers, but in this case you must provide custom url parameter.