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I'm currently building up a service where the user can deposit multiple cryptos. One of them is Monero, and that is where I'm stuck at the moment.

I use PHP for this and the following project: https://github.com/monero-integrations/monerophp

I tried to play around and thought the best way would be the following: - generate an address - check for incoming transfers of the given address

The problem is, that I can generate the address but anyway, when I'm using incoming_transfers or get_transfers, neither I get the needed transactions. I get all of the transactions belonging to the wallet.

Maybe I misunderstood the concept (accounts, addresses, subadresses) as Monero is rather new to me. Can somebody give me a hint what would be the best way to archive the result I want?

I don't need any code, just point me into the right direction, so I can have a look at it! :)

Thanks in advance guys!

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  • I am new to crypto and i am also trying to use same above project but don't know how to use it Do I need to install monero wallet first in my pc/hosting? To user monero wallet commands? I am trying to build monero exchange I have knowledge of php and already developed many websites in php
    – Usama
    Commented Oct 29, 2019 at 23:06

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I would suggest creating a subaddress per customer. Therefore, you will be calling the RPC method create_address (if using the monero-wallet-rpc directly), or the equivalent method in your referenced PHP wrapper library.

To check for incoming payments, you can use incoming_transfers (or the equivalent library method). Depending on your use case, you can request all subaddress incoming payments (e.g. don't supply the optional subaddr_indices parameter), or specific subbaddresses by specififying their respective indices in the subaddr_indices array parameter. An even better approach is to make use of the monero-wallet-rpc parameter --tx-notify which will execute a program each time you receive a payment, thus preventing the need for polling. 

monero-wallet-rpc --help
...
  --tx-notify arg                   Run a program for each new incoming 
                                    transaction, '%s' will be replaced by 
                                    the transaction hash

You can then check which subaddress was deposited to by using get_transfer_by_txid.

A good overview of accounts and subaddresses can be found at https://monerodocs.org/public-address/subaddress/.

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  • Thanks for your response, that is likely the way I was doing it already but incoming_transfers gives me back all transactions of the account. Creating the sub address is fine and works very well. I tried using incoming_transfers with the address itself as subaddress_indices or using an integer. This really bugs me, I cant see any fault. :/
    – FrustratedCoder
    Commented Jul 1, 2019 at 10:45
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    subaddr_indices is an array of integers, not the actual address(es).
    – jtgrassie
    Commented Jul 1, 2019 at 11:12
  • THANKS! That was the problem, I just tried using the index as integer, wrapping it up in an array brought the correct result! :-)
    – FrustratedCoder
    Commented Jul 3, 2019 at 11:43

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