The address received 0.07014343 BTC in
3d727e3f4565e011c0348f813c2d5480210b6bae2003a0f7abaa949d1a7c599a. These coins have already been spent, so at least the recipient's wallet provider is aware of the transaction. Depending on the type of wallet, the recipient's account may not have been credited due to internal system problems.
Alternatively, the recipient has received the funds and is trying to scam you for an additional payment.
In either case, your initial transaction is successful and the recipient must work with their wallet provider. You should no longer send them money.
Check if a transaction is completed
Due to the attention this question receives, I will review some of the best practices when verifying the purpose / completion / status of a transaction.
For a Bitcoin transaction to be complete and irreversible, it must be mined in a block.
To check if a transaction has been retrieved, you can check a block explorer. Block explorers are websites that read blockchain information and make it accessible to people who are not running their own node. Some commonly used explorers for Bitcoin are blockchain.com, blockchair.com, blockstream.info and btc.com (no affiliation with any of them).
When searching for the transaction, as with the link above, a page detailing the transaction is displayed, or a form of error not found.
If a transaction is not found, it almost certainly has not been retrieved – in this case, you should aim to retransmit the transaction instead of sending a new one. It is possible that the transaction has been broadcast and is not yet retrieved by the explorer, so sending a second one may result in a double payment.
If a transaction is found, it can be listed as unconfirmed. In this case, wait until it is confirmed. If a transaction is already confirmed, you should see an indication of the block in which it was retrieved (in the form of a block number or a block hash starting with a group of 0). If a transaction is confirmed, it is complete and irreversible.
Recipient says he did not receive the coins
There are a handful of scenarios in which the recipient may not see the coins even after the transaction is complete:
- Recipient's wallet is not synchronized / does not update properly – this is a more common scenario when using Exchange or other hosted wallets, or using a standard wallet with an uneven or weak Internet connection. In this case, the recipient should check with their wallet provider to locate and credit the coins.
- The address is incorrect – Either you made a mistake when copying the address, or the recipient provided an incorrect address. In this case, you need to work with the recipient to determine who should absorb the loss since the parts are probably unrecoverable.
- The recipient attempts to scam you – once the transaction is complete, only the recipient can access the parts, locate them, or attempt to use them otherwise. If they insist on not having received it, it is not due to a problem on your side and you risk being scammed.
- Don't use a recipient-recommended explorer – it's trivial to build an explorer that hides certain transactions and makes you believe that they aren't complete when they are. Always use multiple third-party browsers if you must. Ideally, you should run your own instance of Bitcoin Core with
-txindex activated and verify the transaction yourself, but this is not possible for many short-term users.
- If you really need to return the coins, first make a transaction on your own wallet which sends you the full balance and wait for this to be confirmed. This prevents you from accidentally paying twice if the original transaction simply was not posted correctly.
- Be patient – transactions with low fees can take a few days to be confirmed during periods of intense network activity – if you see an unconfirmed transaction, just wait.