Making crypto wallets public is also called tagging wallet addresses. There are many ways to tag now, such as CEX proactively disclosing addresses, KOLs disclosing addresses on social networks, AI technology for automated tagging, users providing tags, etc. Tokenview, as a multi-crypto blockchain explorer, is one of the first tool to support wallet address tagging, and is also one of the first applications to make exchange wallet addresses transparent. We introduce how to use Tokenview explorer to tag crypto wallets, and common scenarios for tagging as well.

FIRST, is to open Tokenview blockchain explorer, enterthe address that needs to be tagged in the search box, and click search. Let’s take USDT address 0xf977814e90da44bfa03b6295a0616a897441acec as an example. We will label this USDT address as the Binance exchange.

SECOND, on the search results page, it is displayed that the address exists on multiple blockchains. After selecting the USDT address, a new page is opened.

THIRD, to find the Private Label on the wallet address details page. If you are not logged in at this time, click Login, then return to this page, click Add Private Address Labels

FOURTH, is to fill in the tag. It is recommended to write the Wallet Owner + Wallet Type + (the First 6 characters of the address). For example, this wallet belongs to the Binance exchange, the wallet owner is Binance, and the wallet type is a cold wallet. Remove 0x from the address. The first six digits outside are f97781. The tag is written as Binance Cold Wallet (f97781), click Confirm.

Congratulations, you have successfully completed tagging this address. If you need to modify the label later, click Modify. Note that the current version of Tokenview supports private tags, which means that your tags can only be seen by you by default and will not be displayed to others, thus protecting your data privacy.

Common scenarios for tagging include

1. You are an CEX and you want to make your exchange wallet address public.

2. You are a Wallet Project, and you want to make your wallet address public.

3. Your own wallet address is convenient for management. You can manage the addresses of multiple wallet apps by tagging them.

4. If you are Defrauded, tag the scam wallet to avoid being defrauded again.

5. You are an Investor or Fund and you want to disclose the wallet address of your investment project.

6. You are a KOL and you want to make your wallet address public.

7. You are a Token project and you want to disclose the contract address, foundation address, cryptocurrency raising address, airdrop address, etc.

8. You are a DeFi Staking project and you want to disclose the wallets of staking assets.

9. You are a GameFi project and you want to make your game transaction wallet address public.

In many tagging scenarios, you want to make the labels public, such as CEX addresses, Wallet Project addresses, Token addresses, Scam wallets, etc. Such transparent operations can gain more trust and consensus. This is the difference between Web3 and Web2. You may contact Tokenview to request public tagging. In the next version upgrade, Tokenview will use AI data analysis to disclose tags that will help the industry progress, and will also allow users to choose whether to be private or public when tagging.

First, it is recommended to transfer the remaining assets from the stolen wallet. Assets are including main blockchain cryptocurrencies such as ETH, TRON, SOL, BSC, etc., and tokens such as USDC, USDT, etc., to a new wallet or safe one. At the same time, do NOT use the stolen wallets to avoid further losses of cryptocurrency. If your wallet is stolen without any warning, the mnemonic phrase and private key of the stolen wallet are probably NO longer safe. Please do NOT import the private key of the stolen wallet into a new wallet again.

Second, please review the following scenarios that may result in the loss of crypto assets,

1. Leaking important information such as private keys and mnemonic phrases through copying, screenshots, emails, mobile phone communications, social networks, video conferencing, live, etc.

2. Wallet apps, plug-ins and other software are imitation, fake and fraudulent products. The product you downloaded from an untrusted social network, email, or a new contact, is not a genuine product. Some users have reported using fake wallet software, but it looks exactly the same as the genuine product. Once your private key is generated or imported, your assets may be stolen.

3. Click on suspicious links, possible phishing links, unfamiliar websites, inadvertent wallet apps, wallet plug-ins to obtain wallet authorization, payment links, etc. These links steal your secrets.

Third, on blockchains such as Tron and Ethereum, you have been phished and received a small amount of cryptocurrency from an unknown address. You have transferred cryptocurrency to an unknown address. These operations are phishing fraud, resulting in smart contract is executed and your account is authorized, multi-signed, or stolen.

Best Practice 1, Tokenview is a multi-crypto blockchain explorer. Users often use Tokenview to query cryptocurrency wallet balances, transaction details, historical bills, smart contracts, on-chain data, etc. When you transfer crypto to or from exchanges such as Binance, Coinbase, OKX, etc., DEXs such as Uniswap, Raydium, etc., or wallets such as Metamask, etc., use Tokenview to query the wallet address and transaction hash to ensure that the transaction actually occurred on the blockchain, it is a best practice to avoid suspicious transactions or being scammed.

Best Practice 2, although Tokenview CANNOT transfer out / in cryptocurrency or freeze, users can use Tokenview to track the transaction history of cryptocurrency. When a cryptocurrency is lost or stolen, users use Tokenview to track the lost cryptocurrency and find out which addresses the cryptocurrency went to.

Best practice 3, if your lost cryptocurrency is USDT issued by Tether, please first use Tokenview to track which wallet address the lost USDT was transferred to, and then you can try to contact Tether. For the banned wallet address list of stablecoins such as USDT and USDC, please visit USDT banned list and USDC banned list. About what the USDT blacklist, please read How to know Tether blacklist USDT?

Best practice 4, to tag those scam wallets to avoid similar incidents from happening again. Tagging scam wallets is also helpful to the development of the cryptocurrency industry. For information on how to tag a crypto wallet, please read How to Tag a Crypto Wallet Address?

Usually, the market activity of cryptocurrencies is related to the amount and frequency of stablecoin minting and issuance, because the scenarios of stablecoins include over-the-counter transactions in the primary market, exchanging for cryptocurrencies such as Bitcoin and Ethereum in secondary market, or entering financial derivatives markets such as mortgage lending and futures trading.

Let’s take a look at how much USDT Tether has minted on Ethereum and Tron since the beginning of 2024. All statistics come from Tokenview platform.

Since 2024, Tether has minted USDT 25 times, each time for $1 billion, for a total of $25 billion, of which $13 billion is on TRON and $12 billion is on Ethereum. According to the monthly statistics, $5 billion was minted in January 2024, $2 billion was minted in February, $6 billion was minted in March, $5 billion was minted in April, $2 billion was minted in May, $1 billion was minted in June, $1 billion was minted in July, and $3 billion was minted in August. It is obvious that the minting accounted for more than 50% in the first quarter and 84% in the first half of the year, which coincided with the new highs in Bitcoin prices. Since June, the number and frequency of minting have dropped significantly, and the cryptocurrency market has also entered a volatile period. It is worth noting that 3 times of USDT minting have been made in August, with $1 billion minted on Ethereum on August 13 and $1 billion minted on Ethereum and TRON on August 20, respectively. This may be the restart of the next cycle of cryptocurrency bull market.

If you are a cryptocurrency enthusiast, you can use the stablecoin site of Tokenview to view data related to stablecoins; if you are a cryptocurrency / Web3 developer, you can register on the Tokenview Developer Platform and use the stablecoin API to obtain more historical data, real-time data, etc.

Let’s take very popular Trump Token as an example. Trump Token is known as MAGA. MAGA is on Ethereum blockchain.

1. Find MAGA contract

Query contract address 0x576e2bed8f7b46d34016198911cdf9886f78bea7 in tokenview. In this page, Transaction Count shows the activity of this token on Ethereum blockchain. The higher the value, the more active the transaction, the more focus it will receive and the more popular it will become. Creator is who created this token. It will help track this token history. The First Transaction shows the earliest transaction information of this token.

2. MAGA Details

After click Token Tracker, it will show token details. Totally 47,000,000 TRUMP are supplied. Token holders (addresses) show whether this token is centralized or decentralized. You may query daily transfers of TRUMP token. Normally, sharp fluctuations in price are positively correlated with the number of Transfers of this token.

How many wallet addresses participate in transactions every day? Active Address chart will show it. If token price is rising, normally accompanied by new user’s join. New Address chart will show it.

3. Token’s Rich List

In MAGA detail page, Holders show who has the most TRUMP and its amount.

1. Daily Block Number

Almost every 10 minutes, one block is generated in Bitcoin blockchain. Daily Block Number is relatively stable around 144 blocks. Taking into account the randomness, there is still a difference in the number of days. You can see that in the early days of Bitcoin, this number was not very stable.

2. BTC Block Size (Bytes)

The size of the block reflects the transaction activity of the coin. The more active the transaction, the more transactions are generated, and the larger the block. Of course, it is also related to smart contracts and NFTs. The more complex the contract is, the more block space it occupies. You can see that it is obvious that Bitcoin’s blocks are getting bigger and bigger, indicating that more and more Bitcoin transactions are involved. In the past two years, with the introduction of Bitcoin NFT, the block size has continued to increase.

3. BTC Period of Block Generation (second)

The time interval for Bitcoin to generate blocks, according to the Bitcoin code, is almost every 10 minutes. However, the process of calculating the block hash is random, so you can see that sometimes one block is generated in one or two minutes, and sometimes one block is generated in an hour. This chart further proves the randomness of the Bitcoin network, but overall it is stable.

4. BTC Daily average hashrate (EH/s)

Bitcoin’s hash power is an important indicator. For users who pay attention to Bitcoin prices and Bitcoin mining, this indicator will be observed every day. The hash power indicates how much computing power is involved in Bitcoin mining. As miners increase and the performance of mining machines improves, the hash power of Bitcoin is almost getting higher and higher. As the price of Bitcoin increases, the hash power is usually accompanied by a significant increase, so miners will get more value at this time; when the price of Bitcoin falls back, the hash power may also fall back. Through this indicator, you can calculate the bitcoin mining cost for bitcoin miners. That is, when the price of Bitcoin is lower than the mining cost for miners, miners will suffer mining losses. At this time, miners may choose to shut down, resulting in a decrease in hash power. Of course, as the hash power decreases, , the probability of miners mining Bitcoin will increase.

5. BTC Mining difficulty (T)

The difficulty of Bitcoin mining is also an important indicator. As the name suggests, it indicates the difficulty of mining Bitcoin. The higher the value, the lower the probability of mining Bitcoin per unit hash power. Overall, it is becoming increasingly difficult to mine Bitcoin.

For anti-money laundering and anti-crime reasons, Tether will freeze the USDT on the Ethereum and Tron addresses and put them on the blacklist.

We monitored recent 10-day data of blacklisted USDT. Totally 9,325,671 USDT are blocked and frozen by Tether. The largest amount occurred in https://eth.tokenview.io/en/tx/0xa8a515273a417cfe6635feb8c0befd6748317308280da2e026553f5426adb8bd, 07–03–2024 15:23:59 (UTC). This transaction blocked 4,486,786 USDT.

For safer transactions, you SHOULD check whether the counterparties are in USDT blacklist. The same method also applies to USDC. The useful tool is https://usdt.tokenview.io/en/banned.

To minimize your losses, please make sure to read this article in which we will learn a tool helping to do the “scam check” before making transactions.

Query your address and check if you are in Phishing situation

1. open Tokenview TRON blockchain explorer, type your address and press “Search”
2. check the “TRC20(Latest 20)” from the transaction tab on the address page
3. observe the gray-blue color lines

Normally you should not see these gray-blue color lines, otherwise you are being attacked. The above picture shows the address has been attacked by 4 times at least.

4. find the red rectangle icon from the transaction list

These addresses which are marked by “red rectangle icon” are those attacking you.

Being carefully, manually check every char of the addresses, for instance, TA9SpmD6Fne54b4jEWpCDaHUECdJitspmo, is it similar to your previous target address? Yes, you do have a target address TA9SJtzNUWiU6JzyS3kEQuRHRkPsitspmo at your previous transaction, TA9SpmD6Fne54b4jEWpCDaHUECdJitspmo has the same previous bit “TA9S” and suffix bit “spmo” with different middle part, it is impersonating your target address.

If you accidentally copy and paste the “Impersonator” into your target address, you will lose your asset.

Query the target address and check if it is the Phisher

Do a search on Tokenview TRON blockchain explorer after your copy & paste.

1. type your copied address into the search box and press “Search”
2. observe the “red top line” from “Address Info” part on the address page

Normally you should not see the “Risky” label, otherwise it means you are being attacked.

3. observe the transaction list

All the transactions will be marked as “blue-gray” lines for the risky address.

Query similar Phishing addresses and assess the severity of the risk

1. For the risky address, you will find a “Scam Check” page from any of the transaction. Click and open it, and type the risky address “TA9SpmD6Fne54b4jEWpCDaHUECdJitspmo” to query.

2. observe the result

2.1) if you could see more than 1 address listed, that is to say it is doing phishing

2.2) if you could see “#Phishing” label in the Risky column, that is to say it is being confirmed a phisher

2.3) the more the count of the address in the list the higher severity of the risky address

Read this article if you are getting insights of Assets Exchangs happened on Whales. For example, you are watching a wallet address list which hold more than 1000 ETH on each, you want to get the marketing trend from their activities. Firstly, you expect to get the ETH balance changes, secondly you also care much about the asset exchanges on them, e.g. exchanging 300 ETH to 1,050,000 USDT. This will somehow impact the market trend which is the signal for you to do next trading decision-making.

In this article, we will learn how to get alerts on asset exchanges happened on Whales by utilizing Tokenview Transaction Tracking API.

Real-time data for transactions

Track Exchanges on Whales

Basic Preparation

To track asset exchanges on whale, you need to know,

1. The Whale address — which you want to track.
2. The Trade/Swap event — which is the high-liquidity exchanges’ emitted event on which whales usually do trading on.

The high-liquidity exchanges are Uniswap, SushiSwap, KyberSwap, CoW Swap etc.

Set Tracking Parameters

With the above knowledge, next we will target two parameters in Tokenview Transaction Tracking API:

1. The whale address.
2. The Trade/Swap event’s Keccak-256 hash — (we use CoW in this example)

To monitor event, we actually are identifying the events’ Keccak-256 hash, to get the Keccak-256 hash, you can open CoW Protocol: GPv2Settlement from blockchain explorer, and click any of the transaction from its transaction list, for instance, this one. And then check its “Event Logs(10)” tab, Ctrl+F to search “Trade”, Topics[0] is the event requested, “0xa07a543ab8a018198e99ca0184c93fe9050a79400a0a723441f84de1d972cc17”

With the above parameters, build a HTTP request,

curl --location 'https://services.tokenview.io/vipapi/txmonitor/addTrackingItem?apikey={apikey}' \
--header 'Content-Type: application/json' \
--data '{
    "currency": "ETH",
    "trackType": "event",
    "contract": "your whale address",
    "topic": "0xa07a543ab8a018198e99ca0184c93fe9050a79400a0a723441f84de1d972cc17"
}'

Get Alerts of Asset Exchanges

Once the HTTP request is settled, you will receive the following alert message,

{
 "coin": "ETH",
 "confirmations": 1,  // confirmations
 "contract": "{monitored whale address}",  // monitored whale address
 "event": "{\"address\": \"0x9008d19f58aabd9ed0d60971565aa8510560ab41\", \"topics\": [\"0xa07a543ab8a018198e99ca0184c93fe9050a79400a0a723441f84de1d972cc17\", \"0x9c489e4efba90a67299c1097a8628e233c33bb7b\"], \"data\": \"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\", \"transactionIndex\": \"0xd\", \"logIndex\": \"0xa5\", \"removed\": false}",
 "height": 19738353,  // block height
 "network": "ETH",    // The chain where the transaction occurs
 "time": 1714120199,  // UTC timestamp
 "topic": "0xa07a543ab8a018198e99ca0184c93fe9050a79400a0a723441f84de1d972cc17", // monitored topic
 "txChangeType": "event", // message type
 "txid": "0x2521563c267c32dceeb96d26f3187f010a78383a00e632963cff1251f64913b3" // transaction hash
}

Get the exchanged Asset Pair, Quantity and the Closing Price

From the event part in the alert message, seperating them by 64 chars as a group:

0x09f8f72aa9304c8b593d555f12ef6589cc3a579a2000000000000000000000 - sellToken
000eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee000000000000000000000 - buyToken
00000000000000000000000000006f05b59d3b20000000000000000000000000 - sellAmount
000000000000000000000000000065ce5ee05924d73000000000000000000000 - buyAmount
0000000000000000000000000000000000000000000000000000000000000000 - feeAmount
00000000000000000000000000000000000000000c00000000000000000000000000000000000000000000000000000000000000038ded799036080d502fb53d8273452e0c69de62a33f6f0583816d08aa5a1126b709c489e4efba90a67299c1097a8628e233c33bb7b662b6cda0000000000000000 - orderUid

Based on the definition of the event,

Trade (index_topic_1 address owner, address sellToken, address buyToken, uint256 sellAmount, uint256 buyAmount, uint256 feeAmount, bytes orderUid)

We can parse out

1. the Asset Pair [sellToken vs. buyToken = Maker(MKR) vs. ETH], and
2. the exchange Quantity [sellAmount vs. buyAmount = 0.5 vs. 0.458494072543399283], then

caculate the Closing Price of MKR (equal to the swap rate) 0.5/0.458494072543399283 = 1.0905 MKR/ETH.

Conclusion

By leveraging Tokenview Transaction Tracking, monitoring asset exchanges and closing prices is straightforward, which provides market traders with valuable insights to enhance profitability..

Let’s talk about Transaction Staging from User to Block on Ethereum. When you do trading, you actually are sending transactions to blockchain, and then the blockchain will save the trading record onto itself so that everybody can query it and get acknowledged. Thus your asset is liquiding in the Ethereum economic system.

Transaction has 5 stages,

• Init
• Pending
• Dropped
• Replaced
• Mined

Init Stage

This is the initial status of a transaction. It means, by your authority, the wallet is generating the transaction information locally, preparing ready the sender, the receiver, gas fee, transferred asset, your signature. It has nothing with the blockchain for now, a “string of charactors”.

Pending Stage

Once the wallet connects with blockchain node, and broadcasts the “string of charactors” to the blockchain, the transaction goes into “Pending Stage”. When a transaction is in pending stage, it is alive in a pool called “Mempool”.

Ethereum(ETH) Block Explorer - Tokenview

What is Mempool?

Mempool, as the name implies, memory pool, in which the transaction is not locked down onto the blockchain, it might be dropped, might be replaced, might be verified, might be executed failed, the pool is a place for transactions to be checked(C), to be executed(E), to be organized(O) before recording onto blockchain.

What is to be Checked?

Transaction protocol validation, double spending.

What is to be Executed?

The code logic in contract.

What is to be Organized?

Transaction prioritization by miners.

In summary, Mempool is the stage for miners, they are the CEOs, responsible for getting the job done.

Dropped Stage

The transactions go into “Dropped Stage” if CEO does not accept them after “working”. Once dropped, the transaction will be removed from Mempool and without being included in a block.

The Not-Accept reasons are normally below,

• Invalid Transaction
• Transaction Expired
• Transaction Replaced

Replaced Stage

The user broadcasts another transaction with the same NONCE but a higher gas price. This new transaction is intended to replace the original transaction, with different tx hash. Miners prioritize transactions with higher gas prices, so the replacement transaction may be included in a block.

What is NONCE?

A nonce in Ethereum serves as a security measure to prevent replay attacks and as a mechanism for enforcing the order of transactions from the same sender address.

Using nonce to replace old transactions

Nonce is an advanced usage for senior users, it is useful when you want to cancel/replace the old transaction and want to speed up the transactions. You can change the gas fee to be higher and send a new transaction from the same address with the same nonce, then miners will choose your higher gas transactions verified, omitting the old one yet.

Mined Stage

Come to the last final stage of a transaction, it is being successfully included in a block by a miner and confirmed on the Ethereum blockchain. Its details, including sender, recipient, and amount, are permanently recorded on the Ethereum blockchain and cannot be altered or reversed.

Ethereum Transactions — Pending, Mined, Dropped & Replaced was originally published in Coinmonks on Medium, where people are continuing the conversation by highlighting and responding to this story.

Types of Ethereum Addresses:

1. Externally Owned Accounts (EOAs): These are normal addresses, a bank account, are used by individuals to hold and transfer Ether and tokens.
2. Contract Accounts: These are smart contracts deployed on the Ethereum blockchain. They have associated code and can execute predefined functions when triggered by individuals. <What are Internal Transactions> can give more clues.

Externally Owned Accounts (EOAs)

Once you generate a wallet address and deposit into some tokens, you will be able to query it from blockchain.

Normally, an EOA has the following important data,

1. address type — address or contract.
2. address hash — it is represented as a hexadecimal string, typically starting with “0x”, and consists of 40 hexadecimal characters.
3. balance — the ETH asset the address holds.
4. token balance — the token assets the address holds.
5. transactions — the trading count on blockchain, means the total count of the transferring and receiving.
6. nonce — a sequential number of transactions, it increments by one for each new transaction sent from the account.
7. first txn ETH received — the transaction in which the ETH asset is received the first time.
8. first txn ETH sent — the transaction in which the ETH asset is sent out the first time.
9. transactions list — the normal transaction list, including receiving and sending.
10. ERC-20 token txns — the ERC20 token transaction list, including receiving and sending.
11. ERC-721 token txns — one type of the NFT transaction collection.
12. ERC-1155 token txns — the other type of the NFT transaction collection.
13. call transfers — the internal transaction list, in which the address interacts with contract.
14. first transaction — the first time trading activities on each token.

For programmer, you can get all information from Tokenview APIs.

Contract Accounts

If a smart contract, e.g. Token is deployed onto blockchain, it will be accessible by programmer through its ABI(Application Binary Interface) . A smart contract can be categorized by two types:

• Token Contract — These contracts are used to create and manage digital tokens on the Ethereum blockchain, ERC-20, ERC-721, ERC-1155 are all Token Contract
• Non-Token Contract — These contracts are used to execute code to implement some business logic. For example, Defi swap contract, mixer contract, Oracle contract, game contract etc.

Sometimes, the contract involve both Token and Non-Token, it is also a common case.

Let’s see the data of a Token smart contract,

1. address type — address or contract.
2. contract hash — it is same with EOAs.
3. token name — the name representing the asset.
4. balance — the ETH asset the token holds itself.
5. token balance — the token assets hold by the contract.
6. transactions — the trading count on blockchain, means the total count of the transferring and receiving.
7. nonce — not applicable, smart contract has no nonce.
8. creator — the address who deployed the contract.
9. created in — the transaction by which the contract is deployed.
10. token tracker — the token the smart contract generate.
11. multichain info — normally the same smart contract is deployed on multi chain.

For programmer, you can get all information from Tokenview APIs, you can also subscribe the token creation event to get notification for any of the new Token deployed on blockchain.