What is a TXID and where can you find a transaction ID?
Where to copy a TXID in a wallet or on an exchange, how to check it in an explorer, and how it differs from an address, a withdrawal request and an invoice number. The ID alone does not prove that an order has been paid.
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A TXID is a transaction identifier on a blockchain. It lets you find the record and check what happened to a transfer: whether it was sent, whether it executed successfully, and which asset was transferred to whom. Wallets may use the labels Transaction ID, TxHash or transaction hash, while some networks use signature. Save the TXID together with the network name: the identifier text alone is not enough to check the transfer.
How a TXID differs from other numbers
A wallet address identifies a recipient or sender, rather than an individual transfer. An order number belongs to your purchase, while an invoice ID belongs to a Cryptanio bill. A memo, destination tag or reference may form part of the payment details, but does not replace the TXID.
An exchange may also have an internal withdrawal request number. It helps the exchange's support team locate the request, but does not necessarily open a transaction on the blockchain. Ask specifically for the on-chain transfer ID, rather than just any number in the activity history.
There is no single format for every network. For example, the Solana documentation uses the transaction's first signature as its identifier. Do not change the case, add a prefix or trim characters to make the value look like the format you know from another network.
Where to find a TXID in a wallet
Open the asset on the network you sent from, then go to its history or activity. Select the particular operation, open its details and find the identifier or the explorer link. Copy the full value, rather than the shortened display containing an ellipsis.
For example, the MetaMask guide explains how to open an operation through the token page or the Activity tab and copy its Transaction ID. The View on block explorer button opens the details in an explorer. Labels and layouts may differ in other wallets.
Where to look when withdrawing from an exchange
Open the withdrawal history for the relevant asset and the details of the particular request. Find the blockchain transaction ID or hash field, or a link to the explorer. The Kraken help page provides an example of this process.
If the withdrawal is still processing and has no on-chain identifier, keep the request number and ask the exchange about its status. A missing TXID does not, by itself, explain the delay. Do not submit a second withdrawal simply because you have not yet found the first one on the network.
How to check the identifier you found
Use an explorer for the selected network, preferably reached through your wallet or an official directory. Paste the TXID into the search box. If no record is found, recheck the network, make sure you copied the complete value, and check the sending status. One unsuccessful search does not prove that funds are lost.
In the record, compare the execution result, recipient address, asset, amount and time. For a token transfer, inspect the token movements: the top-level recipient field of a contract call does not always identify the final token recipient. A transaction can contain several actions, so a matching TXID alone is not enough to associate it with an order.
Distinguish between having an identifier, inclusion in a block and confirmation. A TXID can be known before confirmation. There is no universal waiting time after which every transfer automatically counts as successful.
How to use a TXID in Cryptanio
Open Events, select the relevant project, paste the TXID into the Transaction field and click Apply filters. For a specific invoice, open the Payments service, select the project, then open the Payments section and the relevant invoice. Expand Payment attempts and click Transfers for the relevant attempt. History is paginated; keep the identifier of the transfer that was actually sent, even if the payer later changed the payment method.
A TXID helps with reconciliation, but does not automatically mark an order as paid. The payment details, asset, amount and current invoice state must all be correct. Fulfil an order based on paid, rather than just a detected transaction. If your application checks payment itself, use the API status-checking guide; investigate disputed cases with the unpaid-order troubleshooting guide.
What to send to support
Provide the TXID, network, asset, amount, recipient, time and invoice number. The identifier usually belongs to public blockchain data, but publishing it connects the transfer to your enquiry: share the information through an appropriate channel. Passwords, seed phrases, private keys and login codes are not needed to check a TXID. Having an identifier does not guarantee cancellation, a refund or recovery of funds sent incorrectly.