What Is a TxID? How to Find and Check a Transaction ID
A TxID is the unique transaction ID assigned to every crypto transfer. Learn how to find it on an exchange or in your wallet, how to verify it on Tronscan and why it is needed for payment notifications.
Table of contents
Whenever you send a crypto transfer, the transaction is given a unique identifier on the blockchain. So what is a TxID? In short, a TxID (transaction ID) is a unique string of letters and numbers that identifies a transfer's record on the blockchain. In this guide we explain what a TxID is used for, how to find it on exchanges and in wallets, how to check it on Tronscan, and why OnaySIM asks for it when you top up your balance.
What is a TxID and what is it used for?
TxID is short for "transaction ID." Some platforms call it a "Transaction Hash," "Tx Hash" or simply "hash." The value is created when a transfer is broadcast to the network, and once the transaction is added to a block, anyone can see it on a block explorer. On the TRON network, a TxID is a 64-character string of letters and numbers.
With a TxID you can:
- Confirm whether a transfer was actually sent.
- See the amount sent, the recipient address, the network fee and the status of the transaction.
- Identify the transaction precisely when you discuss a payment with the other party or with a support team.
A TxID is public information and does not, on its own, give anyone access to your wallet. You should never share your private key or recovery phrase with anyone under any circumstances, though. Those are completely different from a TxID and must always be kept secret.
How to find a TxID on an exchange or in a wallet
Interfaces vary from platform to platform, but the logic for finding a TxID is almost always the same.
On crypto exchanges
- Go to the "Assets" or "Wallet" section of your account.
- Open "Withdrawal history," "Transaction history" or a similar tab.
- Select the USDT withdrawal in question to view its details.
- Copy the value in the "TxID," "Tx Hash" or "Transaction ID" field.
The exchange broadcasts the transaction to the network after it approves your withdrawal request, and the TxID usually appears after that stage. If the withdrawal still shows as "processing," you may need to wait a little for the TxID to be generated.
In mobile and desktop wallets
In a personal wallet app, select the asset (for example, USDT) and tap the transfer you sent in the transaction list to open the details screen. There you'll find the transaction ID or a link such as "View on block explorer." That link takes you straight to the transaction's record on the blockchain, and you can copy the TxID from there as well.
How to check a TxID on Tronscan
If you sent USDT over the TRC-20 network, the transaction is recorded on the TRON blockchain and can be checked with the Tronscan block explorer. When you paste the TxID into Tronscan's search box, you'll see the following information:
| Field | What it means |
|---|---|
| Status | Whether the transaction succeeded and its confirmation status |
| From / To | The addresses the transfer was sent from and to |
| Amount and token | The amount sent and the token type (e.g. USDT) |
| Time | The date and time the transaction was added to a block |
| Resources and fee | The energy, bandwidth or TRX spent on the transaction |
Always check that the recipient address exactly matches the address you meant to send to and that the token type is USDT. If the status field shows the transaction as successful, the transfer is complete on the network side.
Searching on Tronscan step by step
- Open the Tronscan block explorer in your browser.
- Paste the full TxID into the search box at the top of the page.
- On the transaction page, review the status, amount, token type and recipient address fields.
- If everything is correct, save the TxID to use in your payment notification.
Because blocks on the TRON network are produced roughly every three seconds, transactions usually become visible quickly. If the search can't find the transaction, you may have copied the TxID incorrectly, or the transfer may not have been broadcast to the network yet. In that case, go back to the transaction details on your exchange or wallet and check the value again.
Why does OnaySIM ask for a TxID in payment notifications?
Payment notifications are where the TxID matters most in practice. On OnaySIM, you top up your balance with USDT on the TRC-20 network. After sending USDT to the address shown on the deposit page, you submit a payment notification from the same page. The reason a TxID is required is simple: since more than one user can send payments to the same address, the transaction ID is the most reliable way to match a transfer to you.
Here is how the process works:
- Copy the TRC-20 USDT address on the deposit page.
- When sending from your exchange or wallet, select TRC-20 (TRON) as the network.
- After the transfer is complete, copy the TxID and check it on Tronscan.
- Enter the TxID and any other requested details in the payment notification form and submit it.
- After an admin approves it, the balance is credited to your account.
If you don't have an account yet, create a free account first to access your dashboard. For a detailed walkthrough of the transfer itself, see our guide on how to send USDT (TRC-20). Once your balance is loaded, you can continue by choosing a service and country on the get a virtual number page.
Common TxID mistakes
- Choosing the wrong network: USDT exists on more than one network. Sending to a TRC-20 address over a different network (such as ERC-20 or BEP-20) can mean the funds never arrive and cannot be recovered. Always double-check the network on the withdrawal screen.
- Copying it incompletely or incorrectly: Missing the beginning or end of the TxID makes verification impossible. Search the copied value on Tronscan to confirm it.
- Confusing an address with a TxID: A wallet address and a transaction ID are different things. TRON addresses start with the letter "T," while a TxID is a 64-character string.
- Internal transfers: Some exchanges process transfers between their own users without writing them to the blockchain; in that case, no on-chain TxID may be created.
- Submitting before the transaction completes: If the transaction isn't visible on the network yet, wait a few minutes and submit your notification only after you have checked the TxID.
Conclusion
To sum up, a TxID is the unique, public transaction ID assigned to every crypto transfer. You can easily find it in your exchange's withdrawal history or your wallet's transaction details and verify it on Tronscan. When topping up on OnaySIM, choosing the right network (TRC-20) and entering the full TxID helps your payment notification get matched without any issues.
