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What is Etherscan? Things to know about Etherscan.io in detail

The most prominent feature of blockchain is known to many people is openness and transparency. All work and transactions when using Blockchain technology as a foundation, will be able to check information about the sender, recipient, amount of coins in the transaction, transaction date and time and many other information. And the tools used for that are collectively known as tools Blockchain Explorer. Today, Cryptocurrency Blog I will introduce you to one of the most used blockchain explorer tools today, which is Etherscan, which is used for the Ethereum blockchain. What is Etherscan?? And how to use Etherscan.io to check Ethereum (ETH) transactions and other information. Follow along!

What is Etherscan?

Etherscan is a tool blockchain explorer was created exclusively for the Ethereum platform. Using Etherscan will help check a lot of information on the blockchain Ethereum such as checking ETH transactions on the platform, information about blocks, smart contacts... as well as tracking transactions on decentralized platforms based on Ethereum's blockchain.

Etherscan was founded by CEO Matthew Tan, is Malaysian and founded in July 7, and has a web address of https://etherscan.io/. Currently, Etherscan's team has more than 10 people, mainly living and working in Malaysia. On May 20, 5, Etherscan added many new features to support the Ethereum ecosystem and was endorsed on Twitter by Vitalik Buterin, the founder of Ethereum.


Etherscan main features

Check ETH and Token transactions on Etherscan

Before examining a transaction on the Ethereum blockchain network you need to understand the following terms:

  • TXhash or TXID: is an acronym for transaction code. A sequence of numbers and characters combined and created specifically for each transaction.
  • Sender Address: is the sender's ETH wallet address.
  • Receiver Address: is the recipient's ETH wallet address.

After having one of the above information, enter the recipient's or sender's wallet address or TXhash in the search box on the upper right corner of the Etherscan interface. If the information of one of those parameters is valid, then Etherscan will display all information related to the transaction. And how to read this information is as follows:

How to check transaction with ETH wallet address

When checking with an ETH wallet, at each address of a wallet you can get the following basic information:

  • Balance: is information about the amount of ETH of that wallet (not counting the token value).
  • Ether Value: is the value of the amount of ETH contained in Balance and converted from ETH to USD.
  • Transactions: is the total number of transactions performed (the unit txns is an acronym for transactions).
  • Token Balances: the value expressed in USD of the tokens contained in the wallet.


Then scroll down is the information of the transaction, including 2 tabs Transactions are transactions of ETH and Token Transfers are transactions of tokens, each tab will have the following information:

  • TxHash: is the transaction code. This is a unique code for each transaction, you use to compare with the seller or the buyer when there is a transaction.
  • Block: is the block where your transaction is processed.
  • Age: is the transaction time, also known as the age of the block.
  • From: is the address of that transaction's outgoing wallet. Where OUT is the transaction sent from this wallet, IN is, this wallet transaction is the recipient.
  • to: address of the wallet received in the transaction.
  • value: is the value of the transaction.
  • TxFee: is the fee the sender must pay for that transaction.
  • Token (only in the Token Transfer tab): is the code and token standard of the transaction. If necessary, click on it to see information about that token's Smart Contract.

How to check transaction using information from TxHash

In addition to checking with the ETH wallet address, you can check the transaction with the TxHash transaction code in the search box on the right of the interface of Etherscan Or click on the link in the TxHash column on the information sheet in the wallet above, here will be the information you need to understand as follows:


  • TxReceipt Status: is the transaction status. If you see Success, it means the transaction is complete.
  • Block Height: the sequence number of the block containing this transaction. Attached is the number of confirmed blocks for this transaction, a transaction is only considered done when there is at least 1 confirmation block, if the confirmation block number is 0, the transaction is still in a waiting state, and pending transactions can still be cancelled.
  • TimeStamp: is the time that the transaction is made.
  • From: sending wallet address.
  • to: receiving wallet address.
  • Value: value of the transaction in ETH and converted to USD.
  • Actual Tx Cost/Fee: transaction fee of this transaction.

Those are the basic information to check an ETH transaction with Etherscan. And when you make a transaction, if you check that the transaction appears on the Transactions list then you can rest assured that the transaction is done.

Instructions to check ERC token balance in ETH wallet


To check the balance of ERC tokens in your ETH wallet, go to your wallet's information page, select the item Token Balances to see your wallet balance and total value of ERC tokens currently in your wallet.

Instructions for checking Smart Contracts on Etherscan

In the information section of the wallet in Etherscan, to check the Smart contract section, at the Token Transfer tab, the Token column, click on the token name to view it. At the token page you will get the following information:


  • Total Supply: is the total number of tokens issued under the smart contract.
  • Price: is the current market price of that token.
  • Holders: is the total number of wallets holding that token, the larger the number proves that the token has good attraction and potential.
  • Transfers: is the total number of transactions of that token, the larger the number, the more people buy and sell that token.
  • contract: the unique address of that contract, similar to the wallet address.
  • Decimals: the maximum number of decimals that the token supports. For example Decimals is 6 then that token can be divisible to 0.000001.

Instructions to track multiple ETH wallets with Etherscan

Etherscan allows you to monitor multiple ETH wallets at the same time and features email notifications when new transactions are available. This is a very nice feature of Etherscan especially for those who specialize in airdrops and ICOs. This feature of Etherscan only tracks tokens that have been listed on the exchange and have value, newly launched tokens will not be counted.

To use this feature you need to first register an account Etherscan by entering username, email, password to register. Then you need to activate the link sent to the email you used to register to be able to log in. As for checking the information of any ETH wallet, you don't have to register.

After creating an account in Etherscan, to add a new wallet address to the watch list, go to My Account > Watch List > Add New Address. Then enter the ETH address and identifier in the Description section (this is the part you can fill in freely so that you can remember it most easily). Then you should select the notification feature by Email Notification, finally click Continue.

And in the management list you will see all the added accounts as well as all the tokens that your account has. To adjust the content of the message, click the EDIT button at the wallet address. You can then choose from the following options:

  • Notify on Incoming & Outgoing Txns: send notifications for both sending and receiving transactions.
  • Notify on Incoming Txns Only: send notification for sending transaction only.
  • Notify on Outgoing Txns Only: send notification only for receiving transaction.
  • Alse Track ERC20 Token Transfer: click to enable notifications for both ERC20 tokens.

So, at this point, you can easily track multiple ETH wallets on Etherscan.

Guide to Track Decentralized Exchange (DEX) with Etherscan

Recently, Etherscan has added tracking of decentralized exchanges DEX (Decetralized Exchange) such as Bancor, Kyber Network…and this feature allows you to track all transactions on these exchanges as well as pending orders on the exchange's order book. Detail:

  • Features of DEX Tracker: Keep track of all newly executed orders on the exchange.
  • Features of DEX Pie Chart: Statistics compare trading volume between exchanges.
  • Features of DEX Order Books: The offering prices of tokens are being made on DEX exchanges.


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